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JPH1032898

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DESCRIPTION JPH1032898
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a
display device for use in an acoustic device such as a radio receiver, a cassette deck, a CD player,
etc. used in a vehicle interior, and more particularly a display device for displaying spectral
characteristics, equalizer characteristics, etc. An on-vehicle acoustic device.
[0002]
2. Description of the Related Art A display device having a dedicated display means for displaying
spectrum characteristics and equalizer characteristics has been known. Also, there has been
known an on-vehicle acoustic device equipped with a level display device for issuing a large
number of light emitting elements.
[0003]
However, in the above-mentioned conventional on-vehicle acoustic apparatus, only the level of
the acoustic signal is displayed using the light emitting element. The sound level can not be set
by adjusting the sound level and delay time from each speaker installed in the vehicle to the seat
position in the vehicle desired by the user in the vehicle, and the set seat position can not be
displayed. It was a thing.
08-05-2019
1
[0004]
The present invention solves the above-mentioned conventional problems, and when a sound
field is set at each seat position in a vehicle using a display device that displays spectral
characteristics or equalizer characteristics etc., the seat position is displayed as a display pattern.
It is an object of the present invention to provide an on-vehicle acoustic device capable of
displaying
[0005]
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention
selects each seat position in a vehicle and displays display pattern data corresponding to the
selected seat position on the display means. The signal level and the delay time of the audio
signal output from the speaker disposed in the vehicle are adjusted corresponding to the seat
position.
[0006]
Thus, the sound field can be set to a desired sheet position, and the sheet position set by the
display device can be easily confirmed.
[0007]
DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the
present invention comprises a plurality of speakers respectively disposed on the front, rear, left,
and right in a vehicle, a multiplier, an adder, a delay device, etc. A signal processing means for
outputting a signal adjusted to an audio signal level and a delay time, a selection means for
selecting each seat position in the vehicle, and a memory for storing display pattern data
corresponding to each seat position in the vehicle Means, a display means for displaying the
display pattern data, and display pattern data corresponding to the sheet position selected by the
selection means are read out from the storage means and displayed on the display means and
controlling the signal processing means Control means for adjusting the audio signal level and
the delay time corresponding to the seat position; It is possible to set the sound field preparative
position, has the effect of the seat position set by the display device can be easily confirmed.
[0008]
Hereinafter, embodiments of the present invention will be described with reference to FIG. 1, FIG.
2, and FIG.
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2
(First Embodiment) FIG. 1 is a block diagram showing a configuration of a vehicle-mounted
acoustic device according to a first embodiment of the present invention.
In FIG. 1, reference numeral 1 denotes a display unit. The display unit 1 is set by using a plurality
of segments for displaying equalizer characteristics, spectral characteristics, etc., and a pattern
diagram of a sheet position mode sound field using the segments Perform an operation of
displaying by means of an LCD or the like.
[0009]
Reference numeral 2 denotes a display control circuit. The display control circuit 2 sends a seat
position display signal according to the seat position in the vehicle to the display unit 1
according to an instruction from the control unit 3 and is configured by an LCD driver or the like.
It is done.
[0010]
The control unit 3 sends out data such as a multiplication value, an addition value, and a delay
time for generating a sound field according to each sheet position to the signal processing circuit
8 from the sheet position mode instructed by the operation unit 4 The control unit 2 outputs the
pattern data of the sound field in the seat position mode and instructs to display the mode of the
seat position, and is configured by a microcomputer or the like.
[0011]
The operation unit 4 has a selection key of each seat position in the vehicle selected by the user,
and outputs the data of the selected seat position by setting the sound field of the desired seat
position. It is made up of switches and the like.
[0012]
A storage unit 12 stores data such as multiplication values, addition values, delay values and the
like for generating a sound field corresponding to each stored sheet position, and a sheet
position corresponding to these data. The pattern data of the mode display is stored, and has an
operation of outputting the data of the set sheet position by the control signal from the control
unit 3, and is configured by a ROM or the like.
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3
[0013]
Reference numeral 5 denotes a music source, and the music source 5 is constituted by a cassette
cassette for reproducing music software such as a compact cassette tape, a compact disc (CD), a
CD deck, or the like.
[0014]
An amplifier circuit 6 amplifies the audio signal, and is constituted by an operational amplifier or
the like.
An AD converter circuit 7 has a function of converting an analog signal into a digital signal, and
is constituted by an AD converter IC or the like.
[0015]
Reference numeral 8 is a signal processing circuit, and this 8-signal processing circuit is a
speaker sound generation means for generating an on-vehicle speaker signal (front right speaker,
front left speaker, rear right speaker, rear left speaker) from right / left audio signals By adding
multiplication, addition, delay and so on to generate a sound field according to the seat position
to each speaker audio signal, the time and volume etc. for the sound output from each speaker to
reach the listener are fixed. And the like, and is configured of a DSP, an IC or the like.
[0016]
A DA converter circuit 9 has a function of converting a digital signal into an analog signal, and is
constituted by a DA converter IC or the like.
[0017]
A power amplifier 10 has a function of amplifying an audio signal output from the DA conversion
circuit 9, and is constituted by a power amplifier IC or the like.
[0018]
A speaker 11 is disposed at each of the left and right front and rear of the vehicle, and has a
function of processing the sound signal from the amplifier circuit 10, and is constituted by a
speaker unit and the like.
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4
[0019]
The operation of the in-vehicle acoustic device configured as described above will be described.
FIG. 2 is a flow chart showing the operation state.
The operation unit 4 selects the mode of each sheet position according to the user's designation,
and instructs the control unit 3 the mode of the selected sheet position.
[0020]
The control unit 3 inputs from the storage unit 12 data for generating a delay value, an addition
value, a multiplication value, etc. according to the selected sheet position according to an
instruction signal from the operation unit 4 and Output data.
Further, the control unit 3 inputs pattern data of the selected sheet position display from the
storage unit 12 and sends out the pattern data to the display control unit 2.
[0021]
The display control unit 2 inputs pattern data according to the sheet position sent from the
control unit 3, and outputs a display signal to the display unit 1.
[0022]
FIG. 3 shows an example of display when a sound field is set at each sheet position.
3A shows the case where all four seats are set to the seat position, FIG. 3B shows the case where
the driver's seat is set to the seat position, and FIG. 3C shows the case where the front two seats
are set to the seat position. FIG. 3D shows the case where the seat position is set to the rear two
seats.
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5
[0023]
On the other hand, the left / right audio signal output from the music source 5 is amplified by the
amplifier circuit 6, converted to a digital signal by the AD converter circuit 7, and applied to the
signal processing circuit 8.
The signal processing circuit 8 generates an on-vehicle speaker signal (front right speaker, front
left speaker, rear right speaker, rear left speaker) from the right / left audio signal, and the
selected signal sent from the control unit 3 From the setting data of the seat position, signal
processing such as addition, multiplication and delay is added to each on-vehicle speaker signal.
[0024]
A signal from the signal processing circuit 8 processed according to the selected sheet position is
converted to an analog signal by the DA conversion circuit 9, amplified by the amplification
circuit 10, and output from the speaker 11.
From the speakers 11 arranged in the front, rear, left, and right in the vehicle, an audio signal
level according to the set seat position and an output controlled to the delay time are obtained,
and a seat according to the display pattern displayed on the control unit 3 The sound field is set
to the position.
[0025]
That is, when the driver's seat is set to the seat position, the sound signal level is increased for
the speaker far from the driver's seat, and the delay time is increased for the speaker near for the
driver's seat. The sound field can be set as if the central position of the front, rear, left, and right
speakers.
[0026]
Next, a display example of the seat position in the case of using a segment for displaying a 7 × 7
equalizer or the like will be described with reference to FIG.
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6
[0027]
The 7 × 7 segments of the display device such as the LCD are used, and the vertical control
signals are Segment 0 to 6, and the horizontal control signals are common 0 to 6.
[0028]
When the seat position is set to the driver's seat, it is possible to recognize that the seat position
of the current driver's seat is set by flashing 50 by Segment 5 and Common 0 and flashing 41,
61, 52 in the same manner.
[0029]
Furthermore, by lighting each seat (the front passenger seat, the rear right seat, the rear left
seat), it can be effectively displayed that the driver's seat among the four seats is set.
[0030]
As described above, according to the present invention, each seat position in the vehicle is
selected, display pattern data corresponding to the selected seat position is displayed on the
display means, and the vehicle corresponding to the seat position is displayed. The signal level
and delay time of the audio signal output from the speaker disposed in the inside are adjusted,
and the sound field can be set to the desired sheet position, and the sheet position set by the
display device can be easily made. The effect is that it can be confirmed.
[0031]
Brief description of the drawings
[0032]
1 is a block diagram of a vehicle-mounted acoustic device according to an embodiment of the
present invention
[0033]
2 is a flow chart showing the operation of the same embodiment
[0034]
3 is a display diagram showing an example of volume display in the same embodiment.
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[0035]
4 is a display diagram showing the details of the display unit in the same embodiment
[0036]
Explanation of sign
[0037]
Reference Signs List 1 display unit 2 display control circuit 3 control unit 4 operation unit 5
music source 6 amplification circuit 7 AD conversion circuit 8 signal processing circuit (DSP) 9
DA conversion circuit 10 amplification circuit 11 speaker 12 storage unit
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