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JPH06233374

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DESCRIPTION JPH06233374
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio system apparatus in which a plurality of audio apparatuses are connected, and in
particular, an auxiliary apparatus is connected to a main apparatus to output speaker output
levels of respective volume circuits (hereinafter referred to as VR circuits). The present invention
relates to an acoustic system device suitable for setting.
[0002]
2. Description of the Related Art Conventionally, a large number of audio system devices have
been provided as shown in FIGS. 8 and 9 for connecting an AUX device to a main device and
outputting the output of each VR circuit from a speaker.
[0003]
In FIG. 8, reference numeral 50 denotes a main device of the audio system device, and the main
device 50 has a signal source unit 11, and generally comprises a CD player, a cassette tape
recorder, etc. Are supplied to the VR circuit 12 which performs volume control and tone control
(including tone control).
13The microcomputer 13 is a microcomputer built in the main device 50, and the
microcomputer 13 (hereinafter referred to as the microcomputer 13) controls each circuit based
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on a command from the operation key 14.
[0004]
51Is an AUX device, and the AUX device 51 is composed of a VR circuit 16 that performs volume
control and sound quality control (including tone control), an amplifier 17 that amplifies an
output sound signal of the VR circuit 16, and the like.
[0005]
The source signal from the signal source unit 11 of the main device 50 is acoustically output to
the speaker output terminal 50a via the VR circuit 12.
This sound output signal is supplied to the sound input terminal 51a of the auxiliary device 51, is
level-adjusted by the VR circuit 16 of the auxiliary device 51, and is supplied to the speaker 19
from the speaker terminal 51c through the amplifier 17.
[0006]
Further, the built-in microcomputer 13 of the main device 50 is connected to the microcomputer
18 through the data input / output terminal 51b of the AUX device 51 from the data input /
output terminal 50b.
[0007]
The VR circuits 12 and 16 of the main device 50 and the auxiliary device 51 are, for example,
electronic VR circuits, and are switched by control signals from the microcomputers 13 and 18
and set to an arbitrary volume level (hereinafter referred to as VR level). Any sound output can
be output from the speaker 19.
[0008]
The sound system device configured in this way adds the sound output from the main device 50
to the AUX device 51 so that the sound output level-adjusted by the VR circuit 12 of the main
device 50 and the VR circuit 16 of the AUX device 51 is adjusted. It is output to the speaker 19.
[0009]
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That is, the user may be confused as to whether to adjust the VR circuit 12 or 16 of either the VR
circuit 12 of the main device 50 or the VR circuit 16 of the AUX device 51, or which one of the
VR circuits adjusts the level. Generally, in order to transmit the S / N of the sound signal level
from the main device 50 to the auxiliary device 51 in a good state, the set VR level of the VR
circuit 12 of the main device 50 is set to no attenuation state. The VR level of the sound output
was set by the VR circuit 16 according to the user's preference.
[0010]
When setting the sound output level to the user adjustment level by operating the operation key
14 of the main device 50, the operation data of the operation key 14 is supplied to the
microcomputer 18 of the AUX device 51 via the data input / output terminals 50b and 51b, The
VR circuit 16 is controlled to set the VR level.
However, it was necessary to set the VR circuit 12 of the main device 50 to a state without
attenuation.
Alternatively, the source acoustic output may be supplied to the auxiliary device 51 by switching
so as not to pass through the VR circuit 12 of the main device 50.
[0011]
That is, the VR level setting of the VR circuit 12 of the main device 50 is operated to a nonattenuation state one by one, and the VR circuit 16 of the AUX device 51 outputs a regular sound
output from the speaker 19.
[0012]
FIG. 9 is a block diagram showing another conventional example. The same reference numerals
as in FIG. 8 denote the same parts as in FIG. 8, and a description thereof will be omitted.
In FIG. 9, 60 is a main device, and the main device 60 includes a first VR circuit 61 and a second
VR circuit 62, and an acoustic signal from the signal source unit 11 is transmitted through the
first VR circuit 61. The subwoofer speaker 42a of the speaker system 42 is supplied from the
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first speaker terminal 60a.
Further, the acoustic signal from the signal source unit 11 is supplied from the second speaker
terminal 60 b to the main speaker 42 b of the speaker system 42 through the second VR circuit
62.
[0013]
41Is an operation key connected to the microcomputer 13, and the operation key 41 includes
the first volume operation key 41a (hereinafter referred to as the first VR key 41a) for
controlling the first VR circuit 61; The second VR key 41b controls the second VR circuit 62. The
first VR key 41a sets the VR level of the first VR circuit 61. The second VR key 41b sets the
second VR circuit. 62 VR levels can be set.
[0014]
60
Reference numeral c denotes an acoustic output terminal from the signal source unit 11. The
source signal supplied to the acoustic output terminal 60c is supplied to the VR circuit 16
through the acoustic input terminal 51a of the AUX device 51.
Further, the microcomputer 13 of the main device 60 is connected to the microcomputer 18
from the data input / output terminal 60 d through the data input / output terminal 51 b of the
AUX device 51.
[0015]
The sound system device configured in this way adds the source sound output from the main
device 60 to the above-mentioned AUX device 51, whereby the first and second VR circuits 61
and 62 of the main device 60 and the VR circuit of the AUX device 51 are provided. The sound
output level-adjusted at 16 is output to the speakers 42 and 19.
[0016]
The sound system device configured in this way adds the sound output from the main device 60
to the AUX device 51, and the microcomputer 13 eliminates the main signal output from the
second VR circuit 62 of the main device 60. The output level of the main speaker can be set by
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the VR circuit 16 and output from the speaker 19. The output level of the subwoofer speaker 42a
is set by the first VR circuit 61 of the main device 60 to perform subwoofer sound output Can.
[0017]
In this case, the second VR circuit 62 of the main device 60 is not in use, and the main speaker
42b is unnecessary.
That is, the main device 60 operates the sound system with only the first VR circuit 61 dedicated
to the subwoofer sound output operating.
[0018]
In this manner, the subwoofer sound is level-set from the subwoofer speaker 42a of the main
device 60 by the first VR circuit 61 and outputted, and the main sound is VR circuit 16 from the
speaker 19 of the AUX device 51 connected to the main device 60. Set the level with and output.
[0019]
However, in the audio system apparatus in which the above-mentioned conventional AUX device
51 is connected to the main device 50, the main acoustic output is sent to the speaker 19 of the
AUX device 51 through the VR circuit 12 of the main device 50. In the case of performing this
operation, an operation for setting the setting of the VR level of the VR circuit 12 of the main
device 50 to the non-attenuation state is required, and there is a disadvantage that the
operability of the device is deteriorated and the operation is bothersome.
[0020]
Furthermore, when the VR circuit 12 of the main device 50 is in a small output state, for
example, the input level of the AUX device 51 becomes excessively smaller than the specified
input level. The output level of the VR circuit 16 or amplifier 17 of the AUX device 51 When
unnecessary external noise is mixed in the transmission line supplied from the main device 50 to
the auxiliary device 51, the mixed noise is amplified together with the signal to deteriorate S / N.
there were.
[0021]
In addition, it is necessary to explain the setting operation of the VR circuit 12 of the main device
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50 in the instruction manual or the like, and there is a disadvantage that the cost is increased
such as the description is easy to understand so that the user does not mistake the handling. The
[0022]
Also, as in the other conventional example described above, the subwoofer sound output is
performed from the first VR circuit 61 of the main device 60, and the main sound output of the
second VR circuit 62 of the main device 60 is not used. Since the setting level of the main sound
output is adjusted by the VR circuit 16 of the device 51, the second VR circuit 62 is wasted, and
the cost is increased.
[0023]
The present invention has been made in view of the above-described point, and the purpose of
the present invention is to eliminate the drawbacks of the conventional example, and to set the
subwoofer level setting and the main speaker level setting with one VR circuit of the main device
60. When the audio output is supplied to the auxiliary device 51 via the VR circuit 12 of the main
device 50, the VR circuit 12 of the main device 50 is automatically set to the non-attenuation
state. The present invention is to provide an audio system device capable of obtaining an audio
output of good quality S / N with respect to the output of the auxiliary device 51.
[0024]
A sound system device according to the present invention comprises a main device having a
volume control VR circuit whose VR level is set by an operation key, and an auxiliary device
having a volume control VR circuit. In an audio system device that is connected and outputs
sound from a speaker connected to a speaker terminal of the auxiliary device, a connection
detection unit that detects connection of the auxiliary device connected to the main device, and
detection of connection of the auxiliary device A volume setting means for transferring a preset
setting level to the VR circuit of the main device to set the VR level is provided, and the VR circuit
of the auxiliary device is set by the user adjustment level to output sound from the speaker It is a
thing.
[0025]
The VR circuit may be configured such that the predetermined setting level is the nonattenuation output level.
[0026]
Furthermore, it has a main device having a VR circuit that controls the volume and sound quality
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adjustment or the volume only or the sound quality adjusted by the operation key, and the VR
circuit adjusts the volume and the sound quality or only the sound volume or the sound quality
In the AUX device and an audio system device outputting sound from a speaker connected to the
main device and the speaker terminal of the AUX device, when the connection of the AUX device
is detected, the VR circuit of the main device is set to a predetermined subwoofer level A first
setting means for setting and a second setting means for setting the VR circuit of the auxiliary
device to a predetermined main speaker level are provided, and a subwoofer sound output is
output from a speaker connected to the speaker terminal of the main device. The main audio
output is performed from the speaker connected to the speaker terminal of the above auxiliary
device. Ru.
[0027]
In addition, the first operation key for mode setting and the second operation key for volume
level setting are provided on the operation key, and when the connection of the auxiliary device
is detected, the volume circuit of the main device is set to the first operation. Setting the
subwoofer with the second operation key and setting the subwoofer volume level with the
second operation key, and setting the volume circuit of the AUX device with the first operation
key in the volume mode with the second operation key A second setting means for setting a main
volume level with the 2 operation keys; an invalidation means for invalidating a setting function
of a sub mode of the first operation key when disconnection of the auxiliary device is detected;
The volume circuit of the device is set to volume mode by the first operation key, and the main
volume level is set by the second operation key It may be constituted by a setting means.
[0028]
The operation of the audio system apparatus according to the present invention will be described
with reference to the functional block diagrams shown in FIGS. 1, 4 and 5. FIG.
In FIG. 1, the microcomputer of the main device can detect that the AUX device is connected to
the speaker terminal of the sound output of the main device, and this connection detection
includes detection of the moment when the AUX device is connected ( Connection detection
means 1).
[0029]
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When the microcomputer of the main device detects the connection of the AUX device, the
microcomputer reads out preset VR level data, that is, non-attenuation output data of the VR
circuit, and transfers the data to the VR circuit of the main device.
The VR circuit receiving the non-attenuation output data sets the VR level to be an output
without attenuation (non-attenuation VR level setting means 2).
[0030]
Next, user adjustment operation data by the operation key is sent to the microcomputer of the
AUX device to the VR circuit of the AUX device, and the microcomputer of the AUX device
transfers the user adjustment operation data to the VR circuit of the AUX device to The VR level
can be set (user adjustment VR level setting means 3).
[0031]
That is, the AUX device can receive an audio output signal from the main device of the abovementioned non-attenuation output level, and can output an output set to the user-adjusted VR
level by the VR circuit of the AUX device to the speaker via the amplifier ( Speaker output means
4).
[0032]
As described above, in an audio system device configured by connecting the audio output
terminal from the VR circuit of the main device and the audio input terminal of the AUX device,
the VR circuit of the main device is automatically and forcibly not attenuated. By setting it as an
output, the source signal from the signal source unit is supplied to the AUX device without being
attenuated, and a large S / N is secured against the noise level mixed on the transmission line
transmitted to the AUX device. The sound quality of the sound output from the AUX device can
be secured.
[0033]
FIG. 4 and FIG. 5 show other connection acoustic system equipment different from the above,
and the operation of this acoustic system equipment will be described with reference to FIG. 4
and FIG.
[0034]
The above-mentioned sound system equipment has the first and second VR keys on the operation
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keys, adjusts the volume and sound quality of the subwoofer with this first VR key, and the
volume and sound quality of the main speaker with the second VR operation key Adjust.
[0035]
That is, the VR circuit of the main device is adjusted with the first VR key, the subwoofer sound
signal is output from the subwoofer speaker in the speaker system connected to the main device,
and the VR circuit of the AUX device is controlled with the second VR key The main sound signal
is output from the main speaker connected to the auxiliary device.
[0036]
When the sound system device configured in this way detects the connection time point when
the AUX device is connected to the main device in FIG. 4 (connection detection means 20), the
microcomputer of the main device sets a predetermined subwoofer level (Subwoofer level setting
means 21) The VR level of this subwoofer is transferred to the VR circuit of the main device (first
data transfer means 22).
[0037]
On the other hand, the microcomputer of the main device takes in the setting data of the main
speaker level which has been set in the VR circuit so far and sets the main speaker level (main SP
level setting means 23).
The setting data is sent to the microcomputer of the AUX device, and the setting data of the main
speaker level is transferred to the VR circuit of the AUX device (second data transfer means 24).
[0038]
Thus, the output level of the subwoofer signal is adjusted by the VR circuit of the main device
and the subwoofer sound signal is output from the subwoofer speaker, and at the same time the
output level of the main signal is adjusted by the VR circuit of the AUX device. A main sound
signal can be output from the main speaker (subwoofer sound output means and main sound
output means 25).
[0039]
That is, when the AUX device is connected to the main device, the output of the subwoofer sound
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output and the main sound output can be automatically set by the VR circuit, and the sound can
be output from each connected speaker. The audio system can be easily used without looking at
it and can be configured with a minimum number of VR circuits.
[0040]
In the functional block diagram of FIG. 5, the operation keys are provided with a first operation
key for mode setting and a second operation key for VR level setting, and it is determined
whether the main device is connected to an AUX device or not. When the microcomputer detects
(connection detection means 30), the sub-mode (SUB mode) is set by operating the first operation
key, and the subwoofer VR level is set with the second operation key (sub-woofer level setting
means 31), The setting data of the subwoofer VR level is transferred to the VR circuit of the main
device (first data transfer means 32).
[0041]
Further, when the volume mode (VOL mode) is set by the first operation key, the main VR level is
set by operating the second operation key (main level setting means 33), and setting of the main
VR level The data is transferred to the VR circuit of the AUX device (second data transfer means
34).
[0042]
Thus, the subwoofer sound output level is adjusted by the setting data of VR level transferred to
the VR circuit of the main device, and the subwoofer sound signal can be output from the
subwoofer speaker connected to the main device (subwoofer sound output means 35 ).
[0043]
Further, the main sound output level is adjusted by the VR level setting data transferred to the
VR circuit of the AUX device, and the main sound signal can be output from the main speaker
connected to the AUX device (main sound output means 35).
[0044]
That is, when it is detected that the AUX device is connected to the main device, the subwoofer
sound output is automatically level-set by the VR circuit of the main device and output from the
subwoofer speaker, and the main sound output is automatically output for the AUX device. The
level is set by the VR circuit and output from the main speaker, and the user of the audio system
device can easily and effectively use the system device.
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[0045]
On the other hand, when the microcomputer of the main device detects that the auxiliary device
is not connected, the SUB mode setting function of the first operation key is invalidated
(invalidation means 36), and the VOL mode of the first operation key is set. The main VR level
can be set by the second operation key (main speaker level setting means 37), and the setting
data of the main VR level is transferred to the VR circuit of the main device (third data transfer
means 38).
[0046]
The VR circuit is controlled by the setting data of VR level transferred to the VR circuit of the
main device as described above to set the main sound output level, and the main sound signal
can be output from the main speaker (main sound output means 39) .
[0047]
That is, since the auxiliary device is not connected to the main device, the microcomputer can
automatically adjust and set the main sound output level with the VR circuit of the main device
and output sound from the speaker system connected to the main device.
[0048]
In this way, since the subwoofer output and the main sound output can be independently
adjusted in level by the VR circuit of the main device and the AUX device, and can be output
independently from each speaker, the sound system is used. The user can use the sound system
with simple handling.
[0049]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sound
system apparatus according to the present invention will be described with reference to FIGS.
The same parts as those in the conventional example are given the same reference numerals, and
the description thereof is omitted.
FIG. 1 is a functional block diagram showing an operation configuration, FIG. 2 is a block
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diagram of a main part of hardware, and FIG. 3 is a flow chart explaining the operation.
[0050]
4 and 5 are functional block diagrams showing the operational configuration of another
embodiment, FIG. 6 is a block diagram of the main part of the hardware of the other
embodiment, and FIG. 7 is a flowchart explaining the operation. is there.
[0051]
In FIG. 2, reference numeral 10 denotes a main device, and the main device 10 outputs the
source signal from the signal source unit 11 to the speaker terminal 10a via the volume circuit
12 (hereinafter referred to as the VR circuit 12). 11 and the VR circuit 12 are controlled by a
built-in microcomputer 13 (hereinafter referred to as the microcomputer 13).
[0052]
15
Is an AUX device, and an audio signal supplied to the audio input terminal 15a of the AUX device
15 is output to the speaker terminal 15c via the VR circuit 16 and the amplifier 17.
18The microcomputer 18 controls the VR circuit 16 and the like and is connected to the data
input / output terminal 15b.
19Is a speaker connected to the speaker terminal 15 c of the auxiliary device 15.
[0053]
As described above, the microcomputers 13 and 18 are basically composed of a CPU, a ROM, a
RAM, an input port and an output port (not shown) as well known, and a program for controlling
the CPU is written in the ROM. According to this program, it carries out arithmetic processing
while capturing necessary external data from the operation key 14 connected to the input port
and the data input / output terminals 10b and 15b, etc., or exchanging data with the RAM, The
processing data is output from the output port to the VR circuits 12, 16 and the data input /
output terminals 10b, 15b, etc. as necessary.
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[0054]
In the acoustic system device configured in this way, the source signal from the signal source
unit 11 of the main device 10 is supplied to the AUX device 15 via the VR circuit 12, and further
to the speaker 19 via the VR circuit 16 of the AUX device 15. It is sent out.
That is, the output level of the speaker 19 of the source signal can be adjusted by the VR circuit
12 of the main device 10 and the VR circuit 16 of the AUX device 15.
[0055]
Further, as described above, the microcomputer 13 of the main device 10 and the
microcomputer 18 of the auxiliary device 15 perform the input / output operation of control
data of the respective microcomputers 13 and 18 by connecting the respective data input /
output terminals 10b and 15b. The respective VR circuits 12 and 16 can be controlled to set
respective volume levels (hereinafter referred to as VR levels), and the operation of the
microcomputers 13 and 18 will be described with reference to the flowchart of FIG.
[0056]
Now, when the connection of the main device 10 and the auxiliary device 15 is detected, that is,
when the connection time is detected including the moment of connection (step S1), the
microcomputer 13 sets the VR level to the VR circuit 12 of the main device 10 Data transfer
request (step S2).
[0057]
As described above, when there is a data transfer request (step S3), the microcomputer 13
detects the connection state between the main device 10 and the auxiliary device 15 and the
auxiliary device 15 is connected to the main device 10 (step S4). The VR level is set so that the
10 VR circuits 12 become non-attenuation outputs (step S5), and the VR levels of the set nonattenuation outputs are transferred to the VR circuit 12 (step S6).
[0058]
On the other hand, the user adjustment VR level set by operating the operation key 14 is set in
the VR circuit 16 of the auxiliary device 15 (step S7), and this setting data is sent from the
microcomputer 13 via the data input / output terminals 10b and 15b. The microcomputer 18
sends the VR level to the VR circuit 16 of the auxiliary device 15 (step S8).
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[0059]
Thus, the VR circuit 16 is controlled by the user adjustment data transferred to the VR circuit 16
of the AUX device 15, and the output level to the speaker 19 of the AUX device 15 is set. If the
audio output level is lower than the set reference output level even if it is set to the user
adjustment level by the VR circuit 16 of the above-mentioned auxiliary device 15, the output
level is amplified by the amplifier 17. It is also possible to perform an acoustic output by setting
the output of the speaker 19 of the auxiliary device 15 to the set output level (step S10).
[0060]
When the auxiliary device 15 is not connected to the main device 10 (step S4), the
microcomputer 13 determines that the sound system is configured only with the main device 10,
and sets the user adjustment VR level by the operation of the operation key 14 Then, the setting
data is transferred to the VR circuit 12 of the main device 10 (step S12).
[0061]
That is, the VR circuit 12 of the main device 10 is controlled by the user-adjusted VR level, and
can output the sound level set by the user from a speaker (not shown) connected to the speaker
output terminal 10a of the main device 10 (step S13).
[0062]
In this manner, the VR circuit 12 of the main device 10 can be automatically set to nonattenuation output, and an acoustic output arbitrarily set by the VR circuit 16 and the amplifier
17 of the auxiliary device 15 can be output from the speaker 19. Can easily set the sound output
of the speaker 19 to enjoy good quality music.
[0063]
FIGS. 4 to 7 show an audio system apparatus according to another embodiment, and FIG. 4
shows an operation configuration for detecting an instant at which the main apparatus and the
auxiliary apparatus are connected and controlling each VR circuit. FIG. 5 is a functional block
diagram showing an operation configuration for detecting the connection state between the main
device and the auxiliary device and controlling each VR circuit with the operation key.
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FIG. 6 is a block diagram of the main part of the hardware, and FIG. 7 is a flowchart explaining
the operation.
The same parts as those in FIG. 3 are given the same reference numerals, and the description
thereof will be omitted.
[0064]
In the block diagram of the main part of FIG. 6, 40 is a main device, and this main device 40 has
the signal source unit 11 and the VR circuit 12 as described above, and the signal source unit 11
and the VR circuit 12 are built in Is controlled by the microcomputer 13 of FIG.
[0065]
The operation key 41 for sending an instruction to the microcomputer 13 is connected, and the
first VR operation key 41a for setting the mode and the second VR operation key 41b for setting
the VR level are attached to the operation key 41. There is.
The first operation key for mode setting can, for example, sequentially select the device into VOL,
BAS, MID, TRE, BAL, FAD, and SUB modes, and the VR level at the time of this mode selection is
the second operation. It can be set by the key.
[0066]
42A speaker system 42 comprises a subwoofer speaker 42a and a main speaker 42b, and the
speaker system 42 is connected to the speaker terminal 40a of the main device 40.
[0067]
In the sound system apparatus configured in this manner, the output source signal of the signal
source unit 11 of the main device 40 is level-adjusted by the VR circuit 12 and supplied from the
speaker terminal 40a to the speaker system 42, and at the same time from the sound output
terminal 40b. The source signal supplied to the audio input terminal 15a of the auxiliary device
15 and supplied to the auxiliary device 15 is level-adjusted by the VR circuit 16 and the amplifier
17 and supplied to the speaker 19 from the speaker terminal 15c.
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The level adjustment of the input source signal can be performed to output the sound to the
speaker 19 through the amplifier 17.
[0068]
As described above, the sound system device configured by connecting the main device 40 and
the auxiliary device 15 outputs the main sound of the source signal from the speaker 19 of the
auxiliary device 15, and the speaker system 42 of the main device 40 outputs the subwoofer
speaker 42a. Subwoofer sound output can only be output.
[0069]
The main speaker level of the main sound output speaker 19 may be adjusted by the VR circuit
16 of the auxiliary device 15, and the subwoofer level setting of the subwoofer speaker 42a of
the subwoofer sound output may be adjusted by the VR circuit 12 of the main device 40. it can.
That is, since the main sound output and the subwoofer sound output can be set independently
by the VR circuit 16 and the VR circuit 12, respectively, the user can obtain a good sound output
according to his / her preference.
[0070]
The operation of the sound system apparatus configured in this way will be described using the
flowchart of FIG.
The built-in microcomputer 13 of the main device 40 controls each of the VR circuits 12, 16 by
inputting / outputting each control data as needed by connecting the microcomputer 18 built in
the AUX device 15 and the data input / output terminals 40c, 15b. be able to.
[0071]
Above, the microcomputer 18 of the AUX device 15 detects the moment when the main device
40 and the AUX device 15 are connected, and transfers data to the microcomputer 13 of the
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main device 40 so that the microcomputer 13 connects the AUX device 15 The time can be
detected, and when the connection time is detected (step S20), the microcomputer 13 transfers
the VR level for setting the output level of the predetermined subwoofer speaker to the VR circuit
12 (step S21).
[0072]
Furthermore, the microcomputer 13 transfers the VR level for setting the output level of the
predetermined main speaker to the microcomputer 18 of the auxiliary device 15, and the
microcomputer 18 sets the VR circuit 16 to the VR level of the main speaker output level (step
S22).
[0073]
As described above, when the AUX device 15 is connected to the main device 40, the VR circuit
12 of the main device 40 can set the subwoofer level and output the subwoofer sound output to
the subwoofer speaker 42a. The VR circuit 16 can set the main speaker level and output the
main sound output from the speaker 19.
[0074]
On the other hand, the microcomputer 13 detects whether the AUX device 15 is still connected
to the main device 40 (step S23). When the AUX device 15 is connected, the first operation key
41a is operated to select the SUB mode. (Step S24), the subwoofer VR level is set by the
operation data of the second VR operation key 41b (step S25), and the VR level of the abovementioned subwoofer level setting is transferred to the VR circuit 12 of the main device 40 (step
S24) S26).
[0075]
On the other hand, when the first VR operation key 41a is not in the SUB mode ON but is set to
the VOL mode and the second VR operation key 41b for setting the main VR level is operated
(step S27), the microcomputer 13 The main VR level is set by the operation data of the VR
operation key 41b of 2 (step S28), and the data is sent to the microcomputer 18 of the AUX
device 15 via the data input / output terminals 40c and 15b. The VR level of the main level
setting is transferred (step S29).
[0076]
That is, the subwoofer speaker 42a of the speaker system 42 connected to the main device 40
outputs the subwoofer sound output level set by the second VR operation key 41b during the
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SUB mode of the first operation key 41a and connects to the AUX device 15 The main sound
output set by the second VR operation key 41b is outputted from the speaker 19 in the VOL
mode of the first operation key 41a.
[0077]
When the auxiliary device 15 is not connected to the main device 40 (step S23), the
microcomputer 13 determines that the sound system device is configured only by the main
device 40, and sets the subwoofer sound output of the main device 40. Even if the second VR
operation key 41b is operated while the first VR operation key 41a is set to the SUB mode, the
VR level setting is performed even if the SUB mode setting function of the first VR operation key
41a is disabled. Absent.
[0078]
When the second VR operation key 41b for setting the VR level of the main sound output is
operated when the first operation key 41a is set to the VOL mode (step S30), the microcomputer
13 selects the second VR operation key 41b. The main VR level is set by the operation data of
(step S31), and the VR level data of the main level setting is transferred to the VR circuit 12 (step
S32).
[0079]
That is, the main sound output adjusted by the VR circuit 12 can be output from the speaker
system 42 connected to the main device 40.
[0080]
As described above, at the moment when the AUX device 15 is connected to the main device 40
as an audio system device, the subwoofer sound output level can be automatically set by the VR
circuit 12 of the main device 40, and the subwoofer sound output from the subwoofer speaker
42a The main audio output level can be set by the VR circuit 16 of the auxiliary device 15 at the
same time, and the main audio output can be automatically output from the speaker 19. The user
can easily output the subwoofer speaker 42a and the main audio. The output of the output
speaker 19 can be adjusted independently to listen to better quality sound output.
[0081]
In the above, the level setting of each VR circuit of the sound system device (FIG. 2) connecting
the main device 10 and the AUX device 15 or the sound system device (FIG. 6) connecting the
main device 40 and the AUX device 15 has been described. Furthermore, the functions of the
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present invention can be applied to other sound system devices that use a plurality of sound
devices connected in various ways, and the application of the present invention is applied to
more complicated and diversified sound system devices. You can enjoy more effective quality
sound output with easy equipment handling.
[0082]
As described above, when the audio system device according to the present invention is
connected to output the output signal of the VR circuit 12 of the main device 10 to the speaker
19 through the VR circuit 16 of the auxiliary device 15, the main system 10 Since the VR circuit
12 of the device 10 is automatically set to the non-attenuation output, the sound signal level
supplied from the main device 10 to the AUX device 15 is supplied at a large voltage level. The S
/ N ratio of the noise can be kept large, and an increase in the noise signal due to the amplifier
17 can be prevented, and a good S / N signal output can be obtained from the speaker 19.
[0083]
If the level of the sound signal supplied from the main device 10 is too low despite the nonattenuation output of the VR circuit 12, the amplifier 17 of the AUX device 15 performs
amplification correction to increase the output from the speaker 19 It has the effect of being able
to
[0084]
Furthermore, the user's handling of the use of the VR circuits 12 and 16 connected in series as
described above does not have to be described in detail in the instruction manual or the like, and
the user can easily use the acoustic system at the time of connection without awareness. There is
also the effect that you can enjoy higher quality sound output.
[0085]
Also, when the connection between the main device 40 and the auxiliary device 15 is detected or
the connection state is detected, the subwoofer sound output is controlled by the VR circuit 12 of
the main device 40 automatically without setting operation by the user one by one, and the AUX
device Since the main audio output can be controlled independently by the 15 VR circuits 16,
two VR circuits 61 and 62 as in the conventional example are not required as in the conventional
audio system equipment, and one VR can be eliminated. There is an effect that it can be
configured by the circuit 12, and furthermore, there is also an effect that the output level setting
of the sound system can be easily performed and the user will not be lost in handling.
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[0086]
Furthermore, since the VR level of each VR circuit 12, 16 can be automatically transferred and
set, the main sound output and subwoofer sound output of the sound system can be output more
effectively, and the sound of better quality can be obtained. There is an effect that an output can
be obtained.
[0087]
Furthermore, the setting control function of each VR circuit 12, 16 by the connection of the
sound system is largely dependent on the software of the built-in microcomputer 13, 18 and the
function can be improved without raising the cost. It has excellent features such as being easy to
implement.
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