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JP2008278540

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DESCRIPTION JP2008278540
PROBLEM TO BE SOLVED: To be able to input and output audio signals of normal input and
output channels of a digital mixer from a cascade terminal. SOLUTION: When a predetermined
operation mode is set, an input logical channel setting unit 104 supplies an audio signal input
from a cascade input terminal 82a to an input signal processing unit 108 via an input patch unit
106. Thus, mixing processing can be performed as an audio signal of a normal input channel. At
the same time, part of the audio signals input from the input cards 84-1 to 84-4 is supplied to
the buses 110 to 116 so that these audio signals can be handled as cascade signals. [Selected
figure] Figure 2
ミキサ
[0001]
The present invention relates to a mixer suitable for use in a digital mixer.
[0002]
In the digital mixer, the audio signals of the plurality of input channels are respectively subjected
to equalization processing, volume adjustment processing, and the like, and the result is then
supplied to the plurality of mixing buses, where the audio subjected to equalization processing
and the like The signals are mixed.
Here, since there is a limit to the number of input channels that can be processed by one digital
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mixer, a technique called cascade connection is known in order to process audio signals of the
number of input channels exceeding that. This is because the output signal (cascade signal) of
each mixing bus of one digital mixer is directly input to the mixing bus of the other digital mixer,
so that the number of input channels of both digital mixers can be increased. It functions as a
large-scale mixer with the number of input channels equal to the sum of (Patent Document 1).
[0003]
JP 7-15284 A
[0004]
In order to perform such cascade connection, the digital mixer is provided with a cascade input /
output terminal.
However, if there is another model (second model) in which a terminal of the same type as a
terminal for cascade connection of a certain model (first model) is used as a terminal for an
ordinary input / output channel, the second In the first model, all voice signals input / output
from the corresponding terminal of the model of (1) can be handled only as a "cascade signal",
which is inconvenient. The present invention has been made in view of the above-described
circumstances, and an object thereof is to provide a mixer capable of performing flexible cascade
signal input / output using a plurality of different types of terminals.
[0005]
In order to solve the above problems, the present invention is characterized by comprising the
following configuration. In addition, the inside of a parenthesis is an illustration. In the mixer
according to claim 1, a plurality of mixing buses (110) capable of performing an audio signal
mixing process and capable of inputting an audio signal through corresponding cascaded input
logical channels, and a plurality of normal inputs A plurality of normal input terminals (input first
to fourth slots) for inputting voice signals of physical channels, and a plurality of cascade inputs
corresponding to each of the cascade input logical channels for a plurality of voice signals
(cascade input physical channels) Equalizing processing is performed on audio signals supplied
through a cascade input terminal (82a) input as a physical channel and a plurality of normal
input logical channels respectively corresponding to the normal input physical channel to
equalize each audio signal Processing results from one or more of the mixing buses Input signal
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processing means (108) for outputting to an arbitrary mixing bus, and other devices connected
via the plurality of normal input terminals (input first to fourth slots) or the cascade input
terminal (82a) Storage means (FIG. 5) for storing information defining selectable input modes
among a plurality of input modes corresponding to a plurality of input model information (model
A, model B, MIXER 32 BUS, MIXER 16 BUS) for identifying Input mode setting means (204 for
selecting any of the plurality of input model information and selecting any of the plurality of
input modes defined so as to be selectable corresponding to the selected input model information
And when the first type input mode ("cascade" mode) is selected in the input mode setting means
(204), the plurality of normal Power physical channels are respectively assigned to
corresponding normal input logical channels and the plurality of cascaded input physical
channels are respectively assigned corresponding cascaded input logical channels, while the
input mode setting means (204) Mode) is selected, the plurality of normal input physical
channels selected according to the second type input mode is selected into the plurality of
cascaded input logical channels selected according to the second type input mode. The normal
input physical channel and the cascade are allocated by assigning the cascade input physical
channels corresponding to the selected cascade input logical channels to the normal input logical
channel corresponding to the selected normal input physical channel. Input physical channel
Assignment means (104) for replacing the channels, and cascade voice signal supply means
(providing voice signals supplied from the plurality of cascaded input logical channels to the
mixing bus (110) corresponding to the respective cascaded input logical channels) It is
characterized by having a connection between the input logical channel setting unit 104 and the
mixing bus group 110 in FIG. 2).
Also, in the mixer according to claim 2, a plurality of mixing buses (110) capable of outputting
audio signals through the corresponding cascaded output logical channels while performing
mixing processing of audio signals, Output a plurality of normal output terminals (output first to
fourth slots) for outputting audio signals of the normal output physical channel, and a plurality of
audio signals as a plurality of cascaded output physical channels corresponding to the respective
cascade output logical channels Performing equalizing processing on audio signals supplied from
one or more of the cascade output terminals (82b) and one or more of the mixing buses (110);
Audio signals of a plurality of normal output logical channels respectively corresponding to the
channels A plurality of output models for identifying other devices connected via output signal
processing means (118) for output and the plurality of normal output terminals (output first to
fourth slots) or the cascade output terminal (82b) Storage means (FIG. 5) for storing information
defining selectable output modes among a plurality of output modes corresponding to
information (model A, model B, MIXER 32 BUS, MIXER 16 BUS), and the plurality of output
model information An output mode setting unit (208) for selecting any one of the plurality of
output modes defined in a selectable manner corresponding to the selected output model
information, and setting the output mode When the first type output mode ("cascade" mode) is
selected in the means (208), the plurality of normal output physical channels are respectively
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corresponded And the plurality of cascaded output physical channels are respectively assigned to
corresponding cascaded output logical channels, while the second output mode (other mode) is
selected in the output mode setting means (208). In this case, the normal output physical channel
selected according to the second type output mode is assigned to the cascaded output logical
channel selected according to the second type output mode, and the selected cascade output
logic is selected. Assigning means (122) for replacing the normal output physical channel and the
cascade output physical channel by assigning the cascade output physical channel corresponding
to the channel to the normal output logical channel corresponding to the selected normal output
physical channel )When, Cascade audio signal supply means for supplying audio signals from the
plurality of mixing buses (110) to the cascade output logical channel corresponding to each
mixing bus (from the mixing bus group 110 to the output logical channel setting unit 122 of FIG.
3) And wire connection).
[0006]
As described above, according to the present invention, when the first type of input / output
mode is selected, a plurality of normal input / output physical channels are allocated to the
corresponding normal input / output logical channels, and a plurality of cascaded input / output
physical channels are provided. Is assigned to the corresponding cascade input / output logical
channel, while when the second type of input / output mode is selected, the selected normal
input / output physical channel is assigned to the selected cascade input / output logical channel,
and these selections are made. By assigning the cascaded input / output physical channel
corresponding to the selected cascaded input / output logical channel to the normal input /
output logical channel corresponding to the selected normal input / output physical channel, the
normal input / output physical channel and the cascaded input / output physical channel From
different types of different With terminal, can input and output flexible cascade signal.
[0007]
1.
Hardware Configuration of Embodiment Next, a hardware configuration of a digital mixer
according to an embodiment of the present invention will be described with reference to FIG.
In the figure, reference numeral 4 denotes an electric fader group, which adjusts the signal level
of each input / output channel based on the operation of the user. Furthermore, when the
operation command is supplied via the bus line 12, the electric fader group 4 is configured to
automatically set its operation position.
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[0008]
A switch group 2 includes various switches and an LED key, and the blinking state of the LED
incorporated in the LED key is set via the bus line 12. The reference numeral 6 denotes a rotary
knob group, which comprises a plurality of rotary knobs and the like for setting the left and right
volume balance of each input / output channel. Then, the operation amounts of these rotary
knobs are output through the bus line 12. A waveform I / O unit 8 inputs / outputs an analog
audio signal or a digital audio signal. In the present embodiment, mixing processing and effect
processing of various audio signals are all performed by digital processing. However, an audio
signal input from the outside and an audio signal to be output to the outside can be both digital
and analog signals. Therefore, in the waveform I / O unit 8, processing such as conversion
between an analog signal and a digital signal, conversion between a plurality of types of digital
signals, and the like is performed.
[0009]
In the inside of the waveform I / O unit 8, 82 is a cascade interface unit, and a cascade input
terminal 82a for inputting a cascade signal from an external mixer and a cascade output terminal
82b for outputting a cascade signal to an external mixer are provided. It is done. The cascade
input / output terminals 82a and 82b can respectively input or output digital audio signals of
"32" channel. Also, the waveform I / O unit 8 is provided with "4" slots for inserting "input cards"
and "output cards", and a maximum of "4" of these cards can be inserted. . Then, signals other
than the cascade signal are input / output through these input / output cards. Here, the shapes of
the input card, the output card, the other input terminals, and the other output terminals are
different. In this embodiment, only the cascade input terminal, the cascade output terminal, the
input card and the output card are illustrated as the input and output terminals in the digital
mixer, but this is for convenience of explanation and is illustrated in the embodiment. In addition
to the terminals, this digital mixer is equipped with a plurality of other input terminals and other
output terminals.
[0010]
Reference numerals 84-1 to 84-4 denote "4" input cards, which receive an analog signal or a
digital signal from the outside and convert the received audio signal into a digital signal of the
internal format of the digital mixer. There are types of input cards 84-1 to 84-4 for digital voice
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signals, analog voice signals, etc., and the number of input signals for each card is either "8" or
"16" according to the types. It will be. Similarly, 86-1 to 86-4 are "4" output cards, which convert
a digital signal in the internal format of the digital mixer into an analog signal or another type of
digital signal and output it. These output cards also have types for digital voice signals, analog
voice signals, etc., and the number of output signals of each card is either "8" or "16" according
to the types.
[0011]
Next, 10 is a signal processing unit, which is constituted by a group of DSPs (digital signal
processors). The signal processing unit 10 performs mixing processing and effect processing on
the digital audio signal supplied via the waveform I / O unit 8, and outputs the result to the
waveform I / O unit 8. Reference numeral 13 denotes a rear display unit, which is provided in the
vicinity of the cascade input / output terminals 82a and 82b in the rear panel of the digital
mixer. Although details will be described later, in the present embodiment, one of 5 types of
input / output mode shown in the input / output mode column of FIG. 5 is selected as an
operation mode for inputting a cascade signal. Can. Therefore, in the rear surface display unit 13,
a set of (five) LEDs corresponding to the "input mode" and another set of (five) LEDs
corresponding to the "output mode" are provided. Depending on the currently selected input /
output mode of each set of LEDs, one of the LEDs is selectively set to the lighting state, and the
other LEDs are turned off. This allows the user to view only the back panel and check the input /
output mode when wiring the back of the digital mixer.
[0012]
Reference numeral 14 denotes a large display, which is constituted of, for example, a flat panel
display having a resolution of about "1024 × 768". An input device 15 includes a keyboard and
a mouse, and performs cursor movement on the large display 14 and on / off operation of
buttons displayed on the large display 14. Reference numeral 16 denotes another I / O unit,
which inputs / outputs time code and other information to / from various external devices.
Reference numeral 18 denotes a CPU, which controls each unit via a bus line 12 based on a
control program described later. A flash memory 20 stores the control program in its internal
program area. Reference numeral 22 denotes a RAM, which is used as a work memory of the
CPU 18.
[0013]
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2.
Next, the contents of the mixing algorithm implemented in the signal processing unit 10 and the
like will be described with reference to FIGS. 2 and 3. In these figures, the input cards 84-1 to
84-4, the output cards 86-1 to 86-4, the cascade input terminal 82a and the cascade output
terminal 82b are provided by the hardware in the waveform I / O unit 8 as described above.
Although implemented, components other than the above are implemented by a program
operating in the signal processing unit 10. As described above, audio signals of up to "32"
channels are supplied to the cascade input terminal 82a, and independent "pins" are assigned to
each signal. Therefore, for these audio signals, a unique channel can be defined by the "pin
number". Thus, a channel uniquely determined by the "pin number" is called "PIN-specific
cascade input channel".
[0014]
The audio signals supplied from other mixers via the cascade input terminal 82a are signals
corresponding to various buses (mixing bus group 110, stereo buses 112 and 114, or CUE bus
116) described later. The correspondence between these buses and pin numbers differs
depending on the type of digital mixer. Therefore, when a cascade signal is input to the cascade
input terminal 82a from a model different from that of the digital mixer of the present
embodiment (referred to as a model A), the channel numbers and various buses are matched to
match the correspondence in the model A. It is useful to change the correspondence of. 102 is a
PIN conversion unit, and when a mixer supplying a cascade signal to the cascade input terminal
82a is designated, the PIN unique cascade input channel number is converted as needed to
match the correspondence in model A. . Thus, the channel after the number is converted in the
PIN conversion unit 102 as needed is referred to as cascade input physical channel .
[0015]
Further, in the audio signals of a plurality of channels input through the input cards 84-1 to 844, the "slot number" in which the input card is inserted and the "input terminal number" in the
input card Unique input channels can be defined. Thus, the input channel determined by the "slot
number" and the "input terminal number" is referred to as a "normal input physical channel".
Since each input card can receive voice signals of up to "16" channels, up to "64" channels of
normal physical channels can be secured through "4" slots. By the way, in the conventional
digital mixer, the audio signal of the normal input physical channel is supplied to the mixing bus
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group 110 etc after being subjected to equalization processing and the like in the input signal
processing unit 108 described later, and the audio signal of the cascade input physical channel
Are supplied to the corresponding bus without being subjected to equalization processing or the
like.
[0016]
On the other hand, in the present embodiment, the voice signal of the normal input physical
channel is supplied as a cascade signal to the bus instead of the voice signal of the cascade input
physical channel, or the cascade input is replaced with the voice signal of the normal input
physical channel. The audio signal of the physical channel can be supplied to the input signal
processing unit 108. Reference numeral 104 denotes an input logical channel setting unit, which
switches the paths of the audio signals of the normal input physical channel and the cascade
input physical channel as needed. After this switching is performed, signals which are finally
supplied as cascade signals to the various buses can define unique channels corresponding to the
supplied buses. This channel is called "cascade input logical channel".
[0017]
Further, as described above, since the maximum number of normal input physical channels can
be secured as "64" channels, "64" which should actually perform normal equalization processing
etc. in one-to-one correspondence with these maximum number of normal input physical
channels. Channels can be envisioned. These channels are called "normal input logical channels".
Normally, up to "64" channels can be secured for the physical input channel, but if there is an "8"
channel input card inserted in any slot, or if no card is inserted, the normal input physical
channel can be secured. Since there are fewer channels than "64" channels, there will normally
be "vacancy" in the input logical channel. Furthermore, when the voice signal of any of the
normal input physical channels is used as the voice signal of the cascaded input logical channel,
"vacancy" can be further generated by the number of these channels. In the present embodiment,
the audio signal of the cascaded input physical channel can be assigned to the normal input
logical channel in the "vacant" state.
[0018]
Next, the input signal processing unit 108 performs equalizing processing and volume
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adjustment processing for correcting the frequency characteristic on the audio signal of the
48 channel based on the operation of the electric fader group 4 and the rotary knob group 6
and the like. A channel for specifying an audio signal in such processing is called an "input
mixing channel". An input patch unit 106 sets the correspondence between the normal input
logical channel and the input mixing channel. Reference numeral 110 denotes a mixing bus
group, which is constituted by a "24" -system monaural mixing bus. Reference numerals 112 and
114 denote stereo buses, and 116 denotes a CUE bus, each of which is constituted by a pair of
left and right buses. Therefore, in the present embodiment, a bus of 30 system in monaural
conversion is provided. If the number of bus systems is "30" and the number of cascaded input
logical channels is "32", "2" channels among the cascaded input logical channels are left, but this
is reserved for future expansion. Channel.
[0019]
The input signal processing unit 108 can supply an audio signal of each input mixing channel at
an arbitrary send level to one or more arbitrary ones of the 30 buses 110 to 116. On the
other hand, the audio signal of the cascade input logical channel can supply the audio signal only
to any one corresponding bus. Next, in FIG. 3, reference numeral 118 denotes an output signal
processing unit, which is provided corresponding to these "30" buses, and equalizes the
frequency characteristics to the audio signal as a result of being mixed in these buses, Perform
processing such as level adjustment. Since the audio signals input to and output from the output
signal processing unit 118 correspond to the buses 110 to 116 of the 30 system, channels
can be determined according to the corresponding bus. This channel is called "output mixing
channel".
[0020]
By the way, as with the above-described cascade input terminal 82a, "PIN unique cascade output
channel" is determined by the "pin number" of the cascade output terminal 82b for an audio
signal output from the cascade output terminal 82b to another digital mixer. Be Here, assuming
that the other mixer that receives the cascade signal output from the cascade output terminal
82b is the same model (model A) as the present embodiment, the pin number of the cascade
output terminal 82b is the other. Can correspond to the buses 110 to 116 of the 30 system
in the mixer of FIG. Then, if the other mixer is another model, the relationship between the pin
number and the bus of the other mixer may be different from that of the model A.
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[0021]
Here, assuming that "the relationship between the pin number of the other mixer and the bus is
the same as that of the model A" corresponds to "the bus of the other mixer" (which is the same
as the bus of this embodiment). You can define channels to Channels defined in this manner are
called "cascade output physical channels". Reference numeral 124 denotes a PIN conversion unit,
which performs pin number conversion processing on the supplied cascade output physical
channel audio signal as necessary (to match the pin layout of other models), and The result is
output as an audio signal of the PIN-specific cascaded output channel. On the other hand, for the
audio signals output for cascade connection from the buses 110 to 116 in the mixer of the
present embodiment, channels corresponding to the buses 110 to 116 of the 30 system can
be determined. Channels defined in this manner are called "cascade output logical channels".
[0022]
Further, as with the input card, in the audio signals of a plurality of channels output from the
output cards 86-1 to 86-4, the "slot number" in which the output card is inserted, and the "output
terminal of the output card" A unique output channel can be defined by the number. Such a
channel is called "normal output physical channel". Since each output card can output voice
signals of up to "16" channels and waveform I / O unit 8 is provided with "4" slots for output
cards, these normal output physical channels are also up to maximum. "64" channels will be
secured. Then, it is possible to assume the same number of channels that output various mixing
processing results etc. in one-to-one correspondence with the maximum number of normal
output physical channels. These channels are called "normal output logical channels". An output
patch unit 120 sets the correspondence between the normal output logical channel and the
output mixing channel.
[0023]
Further, in the present embodiment, as an audio signal of a cascade output physical channel, an
audio signal of a normal output logical channel can be output through the PIN conversion unit
124 and the cascade output terminal 82b instead of the cascade output logical channel. As audio
signals of normal output physical channels, signals of cascade output logical channels can be
output to output cards 86-1 to 86-4 instead of the normal output logical channels. An output
logical channel setting unit 122 switches the paths of the audio signals of the normal output
logical channel and the cascaded output logical channel as required.
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[0024]
3.
Operation of Example 3.1. Next, the operation of this embodiment will be described. When the
user performs a predetermined operation, a setup screen shown in FIG. In the figure, reference
numeral 206 denotes a cascade on / off button, which toggles on / off states of cascade input /
output. Reference numeral 202 denotes a cascade input model selection box, which selects
another mixer that inputs a cascade signal to the digital mixer of this embodiment. Reference
numeral 210 denotes a cascade output model selection box, which selects another mixer to
which the digital mixer of this embodiment outputs a cascade signal. Reference numeral 204
denotes a cascade input mode selection box, which selects a "cascade input mode" for specifying
the switching state in the input logical channel setting unit 104. Reference numeral 208 denotes
a cascade output mode selection box, which selects a "cascade output mode" for specifying the
switching state in the output logical channel setting unit 122. A block diagram display unit 212
displays a block diagram for easily illustrating the flow of signals set according to the cascade
input / output mode.
[0025]
Next, details of cascade input / output models and cascade input / output modes that can be
selected by the above-described selection boxes will be described with reference to FIG. The
input / output model column in the figure indicates input / output models selectable in the
cascade input / output model selection box 202, 210. Here, as described above, model A is
the same model as the digital mixer of the present embodiment, and model B is the model of
another specific digital mixer. In addition, MIXER 32 BUS is a non-specific model of which
the number of cascade input / output channels is 32 or less, and MIXER 16 BUS is a
non-specific model of which the number of cascade I / O channels is 16 or less.
[0026]
Further, in the input / output mode column of FIG. 5, selectable input / output modes are
listed in the cascade input / output mode selection boxes 204 and 208. Here, the cascade
mode is an input / output mode in which a cascade input / output physical channel is directly
assigned to a cascade input / output logical channel and a normal input / output physical
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channel is directly assigned to a normal input / output logical channel. In the SLOT 4 mode,
the normal input / output physical channel related to the fourth input / output slot is assigned to
the cascade input / output logical channel, and the cascade input / output physical channel is the
normal input / output logical channel corresponding to the fourth input / output slot Is an
operation mode assigned to In the "SLOT3 / 4" mode, the normal input / output physical channel
related to the third input / output slot and 4th slot are assigned to the cascade input / output
logical channel, and the cascade input / output physical channel is assigned to the third input /
output slot Is an operation mode assigned to the normal input / output logical channel
corresponding to
[0027]
Also, in the SLOT 1-4 [CH1-8] mode, the normal input / output physical channel related to
each of the first to fourth channels of the first to fourth input / output slots is assigned to the
cascade input / output logical channel, This is an operation mode in which physical channels are
assigned to normal input / output logical channels corresponding to the first to fourth channels
of the first to fourth input / output slots. In the SLOT 1-4 [CH 9-16] mode, the normal input
/ output physical channel related to each of the 9th to 16th channels of the 1st to 4th slots is
assigned to the cascade input / output logical channel. This is an operation mode of allocating
physical channels to normal input / output logical channels corresponding to the ninth to
sixteenth channels of the first to fourth input / output slots. In the description of this
embodiment, the term "input / output" is used for convenience, which means "input or output".
The setting states of the input logical channel setting unit 104 and the output logical channel
setting unit 122 are independent and do not impose any restriction on each other.
[0028]
In FIG. 5, until the intersection position of each input / output model name and each input /
output mode name indicates whether the input / output mode is selectable (o) or impossible (x)
in the input / output model. . First, referring to "MIXER 32 BUS", the "cascade" mode is not
selectable. This is because "MIXER 32 BUS" does not indicate a specific model, so it is not
possible to specify the signal (or bus) corresponding to each cascade input / output physical
channel, and such signal is directly transmitted to the buses 110 to 116. It is because it is not
appropriate to input and output in the same way. Also, in "MIXER 32 BUS", "SLOT 4" mode can
not be selected. This is because the maximum number of channels that can be input / output
from 1 slots is 16 , and therefore all 32 channels can not be allocated. And in
"MIXER 32 BUS", all other input / output modes can be selected.
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[0029]
Next, as for "MIXER 16 BUS", only "SLOT 4" mode can be selected, and other modes can not be
selected. Here, the reason why the "cascade" mode can not be selected is the same as "MIXER 32
BUS". The reason why the operation modes other than these can not be selected is that MIXER
32 BUS can be substituted. That is, even if the number of cascaded input / output channels of
other mixers to be connected is 16 or less, MIXER 32 BUS may be selected, whereby the
cascade signal of 16 channel is input to a plurality of input / output slots. It can be
distributed and input / output.
[0030]
Next, for the "model A", only the "cascade" mode can be selected. This does not mean that
cascading via I / O slots is not possible when the other mixers to be connected are actually "type
A". That is, even if the other mixer is actually "Model A", "MIXER 32 BUS" may be selected in the
cascade input / output model selection boxes 202 and 210. Connection is possible. In addition,
when model A s are connected in cascade in cascade mode, a control signal specific to
model A can be input / output between both mixers.
[0031]
Next, for "Model B", "SLOT 3/4" mode, "SLOT 1-4 [CH1-8]" mode and "SLOT 1-4 [CH9-16]" mode
can be selected as in "MIXER 32 BUS" It has become. Furthermore, for "Model B", "Cascade" mode
can also be selected. Since "Model B" is a "specific" model different from "Model A", it is known
which audio signal of each PIN-specific cascade input / output channel actually corresponds to
which bus 110 to 116 . Therefore, by converting the pin numbers in the PIN conversion units
102 and 124, it is possible to make cascade connection almost similar to the case where Model
A is connected.
[0032]
3.2.
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Selection of connection destination model When either cascade input / output model selection
box 202 or 210 is clicked with the mouse, a pop-up window listing input / output models is
displayed below the selection box, and the user can select a new input / output model Is available
for selection. Here, when the user changes the input / output model, an input / output model
change event routine shown in FIG. 6 is started. In FIG. 6, when the process proceeds to step
SP10, the conversion state of the pin numbers in the PIN conversion units 102 and 124 is
changed as necessary. Specifically, as needed is the case where model B is changed to
another model in the selection box 202 or 210 or the other model is changed to model B .
[0033]
In the present embodiment, the correspondence relationship between the respective buses and
pins of model A and model B (the relationship between the pin numbers of the cascade input /
output terminals and the buses inside the mixer, ie, each of the PIN unique cascade input /
output channels is cascaded Data representing the relationship of the number of the input /
output physical channel corresponding to the number) is stored in advance in the present digital
mixer. The PIN conversion process in step SP10 is performed using the stored data.
[0034]
Next, when the process proceeds to step SP12, it is determined whether it is necessary to change
the input / output mode. That is, it is determined whether the input / output mode selected
before the change of the model can not be selected in the model after the change. Here, if it is
determined as "NO" (selectable:)), the process proceeds to step SP14, and the display contents of
the operated selection boxes 202 and 210 are changed to those corresponding to the new model.
On the other hand, if it is determined "YES" (not selectable: x), the process proceeds to step SP16,
the input / output mode selectable in the model is forcibly selected, and a mode change event
routine (described later) (FIG. 7) ) Is activated.
[0035]
3.3.
Selection of input / output mode When any of cascade input / output mode selection boxes 204
and 208 is clicked with the mouse, a pop-up window listing selectable input / output modes is
displayed below the selection box, and the user newly Input / output mode can be selected. Here,
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when the user changes the input / output mode, a mode change event routine shown in FIG. 7 is
started. The same routine is also executed when step SP16 of FIG. 6 described above is executed.
[0036]
In FIG. 7, when the process proceeds to step SP22, it is determined whether the selected input /
output mode is "cascade". If YES is determined here, the process proceeds to step SP24, and
assignment to the normal input / output logical channel is performed for the cascade input /
output physical channel in either of the input / output logical channel setting units 104 and 122.
The cascaded input / output logical channel is assigned and released. Next, when the process
proceeds to step SP26, the assignment to the cascade input / output logical channel is canceled
and the normal input / output logical channel is assigned to the normal input / output physical
channel.
[0037]
On the other hand, if the new input / output mode is a mode other than the "cascade" mode, "NO"
is determined in step SP22, and the process proceeds to step SP28. Here, in accordance with the
selected input / output mode, the normal input / output logical channel to be allocated to the
cascaded input / output physical channel is detected. Next, when the process proceeds to step
SP30, either of the input / output logical channel setting units 104 and 122 cancels the
assignment of the cascade input / output logical channel to the cascade input / output physical
channel, and the detected normal input Output logical channels are assigned. Next, when the
process proceeds to step SP32, the normal input / output physical channel corresponding to the
detected normal input / output logical channel is assigned to the cascade input / output logical
channel. Here, the normal input / output physical channels corresponding to the normal input /
output logical channels other than the normal input / output logical channel detected in step
SP28 are respectively assigned to the corresponding normal input / output physical channels
(having the same number).
[0038]
When the process of step SP26 or SP32 is completed, the process proceeds to step SP34, and the
new input / output setting state in the input / output logical channel setting unit 104, 122 is
stored in a predetermined buffer area in the RAM 22. Next, when the process proceeds to step
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SP36, the content of the block diagram display unit 212 is updated according to the newly
selected input / output mode. Next, when the process proceeds to step SP38, the display content
of the back surface display unit 13 is updated according to the newly selected input / output
mode. That is, the LED corresponding to the new input / output mode is turned on, and the LED
corresponding to the other mode is turned off.
[0039]
Here, the details of the update of the block diagram display unit 212 in step SP36 will be
described. In FIG. 4, the block diagram display unit 212 includes an input stage display unit 212
a and an output stage display unit 212 b. The display example of the block diagram display unit
212 in FIG. 4 is an example when SLOT 4 is selected as the input mode and SLOT 1-4 [CH
9-16] is selected as the output mode. "SLOT4", "CASCADE IN" and "SLOT1-3" in the left part of
the input stage display unit 212a respectively represent "input physical channels", and "CASCADE
IN" and "SLOT IN" in the right part are "input logical channels" Represents ". And the
correspondence between both is shown by the arrow connecting the left part and the right part.
[0040]
Here, when cascade is selected as the input mode, the display content of the input stage
display unit 212 a is as shown in FIG. Thereby, it can be seen that the cascaded input physical
channel corresponds to the cascaded input logical channel, and the normal input physical
channel corresponds to the normal input logical channel. Also, the display contents of the input
stage display unit 212a when the "SLOT3 / 4" mode, the "SLOT 1-4 [CH1-8]" mode, and the
"SLOT 1-4 [CH9-16]" mode are selected as the input mode Are shown in FIGS. 8 (b), (c) and (d),
respectively.
[0041]
Further, the display content of the output stage display unit 212 b is also set in the same manner
as the input stage display unit 212 a. That is, in the example of FIG. 4, "SLOT1-4" and "CASCADE
OUT" in the right part of the output stage display unit 212b represent "output physical channels",
and "CASCADE OUT" and "SLOT" in the left part. "OUT" represents "output logical channel". And
the correspondence between both is shown by the arrow connecting the left part and the right
part. Here, when cascade is selected as the output mode, the display content of the output
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stage display unit 212 b is as shown in FIG. Thereby, it is understood that the cascaded output
physical channel corresponds to the cascaded output logical channel, and the normal output
physical channel corresponds to the normal output logical channel. When another output mode
is selected, the allocation status of the output physical channel and the output logical channel is
displayed in the same manner as in FIGS. 8 (b), (c) and (d) on the input side. .
[0042]
In the block diagram display unit 212, an image representing the appearance of the input /
output terminal relating to the input / output physical channel is displayed adjacent to the block
corresponding to each input / output physical channel. Referring again to FIG. 4, reference
numerals 214 and 218 denote input slot images, which are displayed adjacent to blocks
corresponding to "input fourth slot" and "input first to third slots", respectively. Reference
numeral 216 denotes a cascade input terminal image, which is displayed adjacent to the "CAS
CADE IN" block. Similarly, in the output stage display unit 212b, the cascade output terminal
image 220 is displayed adjacent to the "CASCADE OUT" block, and the output slot image 222 is
displayed adjacent to the "output first to fourth slots" blocks. Ru. Thus, by displaying an image
representing the appearance of the input / output terminal, the user can grasp the function of
each input / output terminal at a glance, and prevent problems such as wiring errors in advance. .
[0043]
3.4.
Specific Example of Connection Process Next, specific examples of the connection relationship
between the PIN conversion unit 102 and the input logical channel setting unit 104 according to
the connection destination model on the input side and the input mode are shown in FIGS. 9 to
13. First, FIG. 9 shows the connection relationship when model B is selected as the input
model and cascade is selected as the input mode. When Model B is selected as the input
model, the pin conversion unit 102 performs pin number exchange processing, and in the case of
a cascade input physical channel, the pin arrangement (channel number) after the switch is
Model A . It is set to be similar. Then, the cascaded input physical channel and the cascaded
input logical channel are associated one-to-one, and the normal input physical channel and the
normal input logical channel are associated one-to-one.
[0044]
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Next, FIG. 10 shows a connection relationship when "Model B" is selected as the input model and
"SLOT1-4 [CH1-8]" is selected as the input mode. In FIG. 10, as in the case of FIG. 9, the pin
conversion unit 102 performs pin number exchange processing, and in the input logical channel
setting unit 104, cascade input physical channels after the exchange processing are the first to
fourth. It is associated with the normal input logical channel corresponding to each of the first to
eighth channels of the slot. Also, the normal input physical channels corresponding to the first to
fourth channels of the first to fourth slots are associated with the first to third channels of the
cascaded input logical channel.
[0045]
Next, a connection relationship when MIXER 32 BUS is selected as the input model and
SLOT 3/4 is selected as the input mode is shown in FIG. Note that, in FIGS. 11 to 13, the PIN
conversion unit 102 is omitted because the pin conversion unit 102 does not exchange pin
numbers. In FIG. 10, the 1st to 32nd channels of the cascaded input physical channel are
attached to the normal input logical channels corresponding to the 1st to 16th channels of the
3rd and 4th slots, respectively. The normal input physical channels of 1 to 16 channels are
associated with the 1st to 32nd channels of the cascaded input logical channel. Then, for the first
and second slots, each normal input physical channel is directly associated with the normal input
logical channel.
[0046]
Next, FIG. 12 shows a connection relationship when MIXER 32 BUS is selected as the input
model and SLOT 1-4 [CH1-8] is selected as the input mode. In the figure, the 1st to 32nd
channels of the cascaded input physical channel are attached to the normal input logical channel
corresponding to the 1st to 8th channels of the 1st to 4th slots, and each 1st to 8th of the 1st to
4th slots. The normal input physical channel related to the channel is associated with the first to
thirty-two channels of the cascaded input logical channel. The normal input physical channels
relating to the ninth to sixteenth channels of the first to fourth slots are associated with the
normal input logical channel as they are.
[0047]
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Next, a connection relationship when MIXER 16 BUS is selected as the input model and
SLOT 4 is selected as the input mode is shown in FIG. In the figure, the first to sixteenth
channels of the cascaded input physical channel are attached to the normal input logical
channels corresponding to the first to sixteenth channels of the fourth slot, and the normal input
physical properties for the first to sixteenth channels of the fourth slot are attached. The
channels are associated with the first to sixteenth channels of the cascaded input logical channel.
The 17th to 32nd channels of the cascaded input logical channel are in the "vacant" state. Then,
the normal input physical channels in the first to third slots are associated with the normal input
logical channel as they are. In the above, an example of the connection relationship between the
PIN conversion unit 102 and the input logical channel setting unit 104 on the input side has
been described, but in the PIN conversion unit 124 and the output logical channel setting unit
122 on the output side, Accordingly, the connection relationship is similarly set.
[0048]
3.5.
Display of Input / Output Patch Setting Screen When the user performs a predetermined
operation to set the input patch unit 106 or the output patch unit 120, the input patch setting
screen shown in FIG. 14 or the output patch setting screen shown in FIG. It is displayed on the
display 14. Here, the contents of these screens will be described. First, in the input patch setting
screen (FIG. 14), reference numeral 302 denotes an input category display field, which displays
the type (category) of means for supplying an audio signal of a normal input logical channel to
the input patch unit 106. For example, the part displayed as "SLOT" corresponds to any of the
first to fourth slots. An ID number display unit 304 displays the ID number of the audio signal
supply unit belonging to the category. For example, ID numbers "1" to "4" are assigned to the
first to fourth slots, respectively.
[0049]
A channel number display unit 306 displays the channel number of the normal input logical
channel in the input means specified by the "category" and the "ID number". An assignment
status display unit 308 displays "1" when the normal input logical channel is assigned to any
input mixing channel, and "0" if it is not assigned to any input mixing channel. Is displayed.
[0050]
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A channel name display unit 320 displays the "channel name" assigned to each input mixing
channel. A channel name change button 318 displays the "channel number" of each input mixing
channel, and when clicked with the mouse, a pop-up window for changing the "channel name" is
displayed. An assignment status display portion 316 displays "1" when the corresponding input
mixing channel is assigned to any of the normal input logical channels, and "1" is not assigned to
any of the normal input logical channels. 0 "is displayed.
[0051]
Reference numeral 310 denotes a grid display unit, which displays a matrix of grids by the
vertical axis corresponding to the input mixing channel and the horizontal axis corresponding to
the normal input logical channel. The portion where ● is displayed in this grid indicates that
the normal input logical channel on the horizontal axis is assigned to the input mixing channel on
the vertical axis. Here, when the user clicks any grid with a mouse and presses Enter key on
the keyboard, assignment is made such that a normal input logical channel is assigned to the grid
with respect to the input mixing channel corresponding to the grid. The state is changed.
Reference numerals 312 and 314 denote scroll bars, which scroll the grid display unit 310 in the
vertical and horizontal directions.
[0052]
Next, in the output patch setting screen (FIG. 15), 352 is an output category display section, 354
is an ID number display section, 356 is a channel number display section, and 358 is an
allocation status display section. The information related to the normal output logical channel is
displayed in the same manner as each component 302 to 308). A channel name display unit 370
and an assignment status display unit 366 display information related to the normal output
logical channel in the same manner as the channel name display unit 320 and the assignment
status display unit 316. However, since the channel name of the normal output logical channel is
fixed, the one corresponding to the channel name change button 318 is not provided. Reference
numeral 360 denotes a grid display unit, which displays the assignment state of the normal
output logical channel to the output mixing channel. Reference numerals 362 and 364 denote
scroll bars, which scroll the grid display unit 360 in the vertical and horizontal directions.
[0053]
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Next, the contents of processing executed when the input patch setting screen (FIG. 14) or the
output patch setting screen (FIG. 15) is displayed will be described. First, when the user executes
an operation to display any of these screens, an input / output patch setting screen request event
routine shown in FIG. 16 is started. In the drawing, when the process proceeds to step SP50, the
requested one of the input / output patch setting screens (FIGS. 14 and 15) is displayed on the
large-sized display 14. At this time, the grid display units 310 and 360 are displayed in the first
display mode (for example, the background color is light blue).
[0054]
Next, when the process proceeds to step SP52, the input / output setting state (see SP34 in FIG.
7) stored in the buffer area in the RAM 22 is read. Next, when the process proceeds to step SP54,
it is determined whether the input / output mode is "cascade". If NO is determined here, the
process proceeds to step SP56, and the normal input / output logical channel assigned to the
cascade input / output physical channel is searched. Next, when the process proceeds to step
SP58, the display mode of the portion corresponding to the detected normal input / output
logical channel is changed to the second display mode in the grid display units 310 and 360.
[0055]
For example, this second display mode may be "display background in yellow". However, in FIG.
14, this second display mode is displayed by hatching . According to the illustrated example,
since the 9th to 16th channels of the input first slot are in the second display mode, the user
actually supplies the audio signal of such normal input logical channel from the cascade input
terminal 82a. It can be understood at a glance that it is a signal being
[0056]
Next, when the process proceeds to step SP60, the display mode of the portion corresponding to
the normal input / output logical channel in the "vacant" state is changed to the third display
mode. For example, the third display mode may be "display the background in gray". However, in
FIG. 15, this third display mode is displayed by "mesh". According to the illustrated example,
since the 9th to 16th channels of the output first slot are in the third display mode, the user
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looks that such a normal output logical channel can not actually output an audio signal. Can be
grasped.
[0057]
4.
Modifications The present invention is not limited to the embodiments described above, and
various modifications can be made, for example, as follows. (1)In the above embodiment,
although the audio signals of the normal input / output physical channel are input / output
through the "slot" and the "input / output card", these signals are not used, and the audio through
the simple "input / output terminal" is used. It goes without saying that the present invention
may be applied to a mixer that inputs and outputs signals.
[0058]
(2)Further, in the input / output logical channel setting units 104 and 122 of the above
embodiment, the paths are switched collectively by a plurality of input / output channels in a
certain range, but the paths are freely made for each audio signal for each 1 channel. May be
switched.
[0059]
(3)
Further, in the above embodiment, the "model" candidates displayed in the selection boxes 202
and 210 have the same contents in both "input" and "output", and are displayed in the selection
boxes 204 and 208. The candidates for the mode were similar in the "input" and the "output".
However, it is not necessary to align the "model" or "mode" between "input" and "output", but you
can select "model" or "mode" that applies only to either "input" or "output". You may do so.
[0060]
(4)In the above embodiment, the input / output mode can be selected arbitrarily within the range
shown in FIG. 5 regardless of the presence / absence and type of the input / output card actually
inserted in the input / output slot. The candidates for the input / output mode that can be
selected by the user may be changed according to the presence / absence and type of the input /
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output card actually inserted.
[0061]
(5)
Also, in the above embodiment, one line of audio signal is input / output from each one of the
pins provided at the cascade input / output terminals and the terminals of the slots. A plurality of
audio signals may be input / output via
No matter how the voice signals communicated by the pins are assigned to the pins, for the
cascade input / output terminals, it is determined via which pin the respective voice signal of the
PIN-specific cascade input / output channel is communicated As can be appreciated, it is
sufficient to store data representing the specification in the digital mixer of this embodiment.
[0062]
(6)In the above embodiment, various processes are executed by the program operating on the
CPU 18. However, only the program is stored and distributed in a recording medium such as a
CD-ROM or a flexible disk, or distributed through a transmission path. It can also be done.
[0063]
It is a hardware block diagram of the digital mixer of one Example of this invention.
FIG. 5 is a block diagram of an example digital mixer algorithm. FIG. 5 is a block diagram of an
example digital mixer algorithm. It is a figure which shows the setup screen displayed on the
large sized display 14. FIG. It is a figure which shows the correspondence of a cascade inputoutput model and a cascade input-output mode. It is a flowchart of an input / output model
change event routine. It is a flowchart of a mode change event routine. It is a figure which shows
the change content of the setup screen according to input / output mode. FIG. 16 is a diagram
showing a connection relationship in a cascade mode of model B. FIG. 18 is a diagram
showing a connection relationship in a SLOT 1-4 [CH1-8] mode of model B. It is a figure
which shows the connection relation in "SLOT3 / 4" mode of MIXER 32 BUS. It is a figure which
shows the connection relation in "SLOT1-4 [CH1-8]" mode of MIXER32 BUS. It is a figure which
shows the connection relation in "SLOT4" mode of MIXER16BUS. FIG. 6 is a view showing an
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input patch setting screen displayed on a large size display 14; FIG. 6 is a view showing an
output patch setting screen displayed on a large size display 14; 15 is a flowchart of an input /
output patch setting screen request event routine.
Explanation of sign
[0064]
2: switch group, 4: electric fader group, 6: rotary knob group, 8: waveform I / O section, 10:
signal processing section, 12: bus line, 13: rear display section, 14: large display, 15: Input device
16: Other I / O section 18: CPU 20: flash memory 22: RAM 82: cascade interface section 82a:
cascade input terminal 82a, 82b: cascade input / output terminal 82b: cascade output terminal ,
84-1 to 84-4: input card, 86-1 to 86-4: output card, 102, 124: PIN conversion unit, 104: input
logical channel setting unit, 106: input patch unit, 108: input signal processing Unit 110: mixing
bus group 112, 114: stereo bus 116: CUE bus 118: output signal processing unit 120: output
patch unit 122: Force logical channel setting unit 202: cascade input model selection box 204:
cascade input mode selection box 206: cascade on / off button 208: cascade output mode
selection box 210: cascade output model selection box 212: block diagram display Section 212a:
input stage display section 212b: output stage display section 214, 218: input slot image, 216:
cascade input terminal image, 220: cascade output terminal image, 222: output slot image, 302:
input category display column , 304: ID number display unit, 306: channel number display unit,
308: assignment status display unit, 316: assignment status display unit, 318: channel name
change button, 320: channel name display unit, 352: output category display section, 370:
Channel name display , 310, 360: Grid display unit, 312 and 314: scrollbars, 362 and 364: the
scroll bar.
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