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JPH10285700

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPH10285700
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio apparatus for outputting multi-channel audio signals for surround reproduction with a
speaker.
[0002]
2. Description of the Related Art In a conventional audio apparatus, signals of a plurality of
reproduction channels are reproduced from a plurality of speakers, and signal sounds radiated
from the respective speakers are heard so that a predetermined sound image is reproduced in
surround at a trial listening position. I changed the channel specification and adjusted the level
so that the sound came out from the fixed direction.
[0003]
In addition, the listener listens to the recording medium on which the signal of each channel is
recorded for the test, and determines the position of the speaker, whether or not each speaker
arranged at the predetermined position is connected to the predetermined channel. According to
the program for trial listening to be decided, after performing the setting work of the speaker
configuration to be sequentially listened and set, surround playback was performed.
[0004]
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1
A speaker cord connected at one end to a speaker is connected to an output terminal of an audio
apparatus having signals of many channels, and multichannel sound field reproduction is
performed to have a surround effect. When a recording medium is reproduced and power
amplified to obtain a speaker output in order to obtain a three-dimensional sound image, if a
wiring error is made at the speaker output terminal side, a desired sound image can not be
obtained.
In addition, connecting a speaker for middle to high tone reproduction to a channel for low tone
reproduction may cause speaker breakage if the setting is made, and the output terminal of the
amplifier of the channel to be specified matches the speaker arrangement position Connection is
required, and the connection setting operation is complicated.
Furthermore, in the speaker configuration configured to confirm the speaker connection, after
the speaker is installed at a predetermined fixed position and connected, more complicated
setting operations such as correction of delay amount and level adjustment are performed. Be
done. According to the present invention, it is possible to quickly confirm whether the speaker
wiring has been correctly performed, detect the connection to the input channel and the output
terminal of the speaker, and connect the channel display and the speaker corresponding to the
speaker arrangement position. The display is made so that the speaker can be easily connected to
the target output terminal from the displayed content.
[0005]
According to the present invention, there is provided an audio apparatus having a plurality of
output terminals for multi-channel reproduction, comprising: a channel indication indicating a
channel to which a test tone signal supplied to the channel is inputted; It is an audio apparatus
comprising display means for detecting that a speaker is connected to a terminal and displaying
the detected output channel.
[0006]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, a first display means for displaying a channel to which
a test tone signal supplied to the channel is input, and a speaker at the output terminal An audio
device comprising: detection means for detecting that power consumption has been made, and
second display means for displaying the position of a predetermined speaker of the output
terminal detected by the detection means .
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2
[0007]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, a channel position display means for detecting and
displaying a test tone signal supplied to the channel, and an output of the channel indicated by
the channel position. A detection unit that detects that a speaker is connected to the terminal and
power consumption is achieved; a speaker position display unit that displays a predetermined
speaker position of the output terminal detected by the detection unit; and the detection unit It is
an audio apparatus provided with a determination means for determining whether it is detected
and connected to a predetermined output terminal.
[0008]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, channel position display means for detecting and
displaying a test tone signal supplied to the channel, and amplifying the test tone signal by an
amplifier A detection means for detecting the consumption current of the power supply of the
amplifier by outputting to the output terminal and detecting that the speaker is connected to the
output terminal, and a predetermined speaker for the output terminal of the amplifier detected
by the detection means An audio apparatus comprising: a speaker position display means for
displaying the position of and a determination means for determining that the speaker is
connected to the output terminal.
[0009]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, a channel display means for detecting and displaying a
test tone signal supplied to the channel, and an output terminal amplifying the test tone signal.
And detecting means for detecting the current supplied to the amplifier for outputting the signal
and detecting that the speaker is connected to the output terminal, and a speaker position for
displaying a predetermined speaker position of the output terminal detected by the detecting
means It is an audio apparatus comprising display means and means for judging that a speaker is
connected to the output terminal and performing surround reproduction.
[0010]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, channel switching means for switching input signals of
a plurality of channels supplied to the channels, and reproduction of a channel switched by the
switching means. An audio apparatus comprising: channel display means for displaying a
position; detection means for detecting that a speaker is connected to the output terminal; and
position display means for displaying the position of the output terminal detected by the
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3
detection means. is there.
[0011]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, channel switching means for replacing signals of a
plurality of channels supplied to the channels, and a reproduction position of the channel
switched by the switching means. A channel display means for displaying the information, a
detection means for detecting that the speaker is connected to the output terminal, a
reproduction position display means for indicating the reproduction position of the speaker
detected by the detection means, and An audio device comprising means for supplying test tones
in a predetermined order.
[0012]
Further, according to the present invention, in an audio apparatus having a plurality of output
terminals for multi-channel reproduction, channel switching means for switching signals of a
plurality of channels supplied to the channels, and a position of the channel switched by the
switching means Channel display means for displaying, connection detection means for detecting
a channel connected to a speaker at the output terminal, and speaker position for displaying the
reproduction position of the speaker connected to the output terminal of the channel detected by
the connection detection means It is an audio apparatus comprising display means and means for
holding in memory a state in which input signals are exchanged by the channel switching means.
[0013]
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of the audio apparatus of the present
invention.
Further, FIG. 2 is a flowchart showing the operation of a microcomputer (hereinafter referred to
as a microcomputer), and FIG. 3 is a view showing an example of a display pattern of a display.
[0014]
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The audio apparatus 1 of this embodiment has a reproduction signal from the output end 12 of
the reproduction apparatus 11 to the input terminal 4 which reproduces a recording medium
having recorded thereon three-dimensional acoustic information and image information etc. such
as a laser disk (hereinafter referred to as LD). It is input.
The reproduction device 11 is controlled by the microcomputer 8 by the synchronization signal
to perform selective reproduction of a desired track of the LD.
[0015]
The audio apparatus 1 drives six speakers to which five channels (FL, FR, C, SL, SR) and
subwoofers are added by reproducing and supplying surround signals to speakers for fivechannel surround reproduction. Speakers 2a to 2n (n = f) are built in, and the output terminals 5a
to 5f provided on the back panel etc. to which the outputs of the respective amplifiers are
respectively connected are provided, and the speakers 3a arranged at respective fixed positions
in the listening room It connects with the input terminals 6a-6f of -3f by a connection line.
[0016]
Signal processing such as demodulation of an input signal and digital-to-analog conversion is
performed by the input signal processing unit 7.
The input signal processing unit 7 performs signal processing, and audio signals divided into the
signals of the respective channels are supplied to the respective amplifiers from the terminals 7a
to 7f.
[0017]
The amplifiers 2a to 2f include level controllers 16a to 16f that control the input level by the
microcomputer 8 based on the operation of the operation unit 10.
Also, the amplifiers 2a to 2f of each channel are provided with minute resistances for detecting
power consumption in their power supply units, and have detection elements 13a to 13f for
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5
detecting the voltage at both ends, and switches 14a to 14b for shorting the respective detection
elements. Equipped with 14f.
Each detection element 13a-13f detects the current supplied from the power supply.
Further, a part of the image information reproduced by the reproduction device 11 is taken in by
the microcomputer 8 and displayed on the display 9 or directly displayed on the screen display
17 such as a screen of a television.
[0018]
The test tone signal and image display signal of each channel in the memory of the
microcomputer 8 or the test tone signal reproduced from the recording medium by the
reproducing device 11 and the speaker layout pattern information which is a part of the image
information are processed by the microcomputer 8 It is captured.
The speaker layout is displayed on the display 9 as shown in FIG.
[0019]
The display of the speaker position to which the output of the amplifier in FIG. 3 is supplied is,
for example, the amplifier 2a for the center speaker, the amplifier 2b for the front left (FL)
speaker, the amplifier 2c for the front light (FR) speaker, and the amplifier 2d surround An
amplifier 2e is designated in advance as a surround light (SR) speaker, and an amplifier 2f is
designated as a subwoofer, for a left (SL) speaker.
[0020]
The microcomputer 8 controls the input signal processing unit 7 to select a signal as an amplifier
of the determined channel and inputs it to each of the amplifiers 2a to 2f from the terminals 7a
to 7f, and the display A of the channel to which the signal is input blinks The output of the
amplifier 2 is output from the output terminal 5 and consumed by the speaker 3 connected to
the output terminal 5, whereby the power supplied from the power supply circuit of the amplifier
2 is increased. Assuming that the speaker 3 is connected, the display S of the output can be
displayed in a flickering manner to confirm that the display of A and S matches the direction of
the sound.
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[0021]
When the test tone signal is at the center, the power consumption is detected by the detection
element 13a.
A in the center display blinks as the display.
In the normal case, A and S on the display coincide with each other, and they are displayed in a
blinking manner. However, they do not coincide when, for example, the channel output terminals
7a to 7f of the input signal processing unit 7 are replaced by special operation.
[0022]
Further, as shown in FIG. 3, a plurality of speakers 3a to 3f are arranged in association with the
surround listening position, and an input channel display A and a display S on the output
terminal side indicating that the speakers 3a to 3f are connected are approached. Since the
display is made in the related position, the test tone signal is switched in the channel order by
using the test tone sound source built in the microcomputer 8 and A is displayed in a blinking
manner, and the blinking display of S in the related portion is not made or the test tone is heard.
If not, it is immediately recognized that the signal is disconnected after the output terminal 5 to
which the speaker 3 is connected, and the cause can be determined.
[0023]
When the recording medium is reproduced in the reproducing apparatus 11 and the setting
operation of the optimum listening condition by the recording medium is performed, since the
connection state is already set and stored in the microcomputer 8, the operation of the speaker
configuration based on the stored information The completion can be instructed by the key input
of the operation unit 10 to easily set.
[0024]
The speaker layout is displayed on the display 9 or the screen display 17, and the level control of
the sound of the speakers 3a to 3f displayed in the connection display S and the position display
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7
A of the test tone signal by blinking is adjusted for each channel by the level controller 16. In the
adjustment of the delay time, the control unit 10 controls the input signal processing unit 7 to
control the delay amount.
Also in this case, the test tone signal of each channel may be input to check whether the
connection between the output terminals 5a to 5f of the amplifiers 2a to 2f with the speakers 3a
to 3f is reliably maintained by the microcomputer 8 it can.
[0025]
Also, instead of the test tone signal by the above-mentioned reproduction device 11, the speaker
arrangement display pattern and the test tone signal data stored in advance in the memory of the
microcomputer 8 are read out, and the display of the speaker arrangement shown in FIG. The
level control of the sound from the position of the connected speakers 3a to 3f of the position
display A of the input channel of the test tone signal by blinking the display position and the
display S of the connection of the speakers by the level controllers 16a to 16f The adjustment of
the delay time is performed by the channel, and the setting operation is performed by the
operation unit 10, and the delay amount is set by the input signal processing unit 7 under the
control of the microcomputer 8 to set the speaker configuration.
The microcomputer 8 can always perform an operation to confirm whether or not the connection
of the speakers 3a to 3f to the output terminals 5a to 5f of the amplifier 2 is reliably maintained
by the no-operation instruction.
[0026]
In addition, although it has been described that input channel switching is performed by the
above-mentioned input signal processing unit 7, in the case of an audio device in which the
setting of the input channel is fixed, the output terminals 5a to 5f correspond to the speakers 3a
to 3f at fixed positions. Connected
Therefore, the test tone signal of each channel is switched by the microcomputer 8 and it is
determined whether the speakers 3a to 3f are connected to the output terminals 5a to 5f by
supplying power to the respective amplifiers 2b to 2f via the detector 13a. The connection and
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detection may be made common, and the blinking display of the test tone signal A of the input
channel or the blinking display of S indicating the connection of the speaker may be confirmed to
confirm whether or not the sound matches.
[0027]
Next, the operation of the microcomputer 8 will be described based on the flowchart shown in
FIG. The operator connects the speakers 3a to 3f to the output terminals 5a to 5f of the audio
device 1 (S1). The operation unit 10 instructs the playback apparatus 11 to generate a test tone
via the microcomputer 8. The reproduction device 11 reproduces a predetermined track of a
recording medium provided for speaker configuration, and image information indicating the
speaker arrangement is sent from the microcomputer 8 to the display 9, and the display 9
displays the arrangement of each speaker The microcomputer 8 controls the playback device 11
so that the test tone signal of each channel is sequentially generated. The display 9 and the
screen display 17 display the position of the speaker to which the test tone signal is to be output
(S3).
[0028]
For example, as shown in FIG. 3, the speaker display blinks A of the display corresponding to a
predetermined speaker position to alert the operator and indicates that a test tone signal is input
to the speaker at A position.
[0029]
The microcomputer 8 turns off or on any of the switches 14a to 14f to search for which channel
the test tone signal is input to (S4), and the power consumption is increased because the speaker
load is connected. It detects that the current consumed increases.
When the power consumption is detected, the microcomputer 8 determines that any one of the
speakers 3a to 3f is connected (S5), and displays the speaker position S at a fixed position to
which the output of the predetermined amplifiers 2a to 2f is supplied. Is displayed blinking (S6).
[0030]
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9
Whether the position of the speaker 3 from which the speaker output sound of the test tone
signal is output matches the position of the blinking display S, the microcomputer 8 displays a
confirmation message on the display 9 (S7). The setting operation is performed from the unit
(S11). When the setting operation is not made in the operation unit 10 for a fixed period, the
microcomputer 8 confirms the coincidence of the blinking display of A and S displayed on the
display 9 and judges the coincidence, and judges that the speaker connection is properly set. The
test tone signal of the next channel is output, and the determination is repeated sequentially.
[0031]
When the blinking positions of A and S displayed on the display 9 are different, the operator
inputs from the operation unit 10 that there is an error by key input, and the connection of the
speaker 3 to the output terminal 5 of the amplifier 2 is The connection is made again to the
speaker 3 at the display location, or the result is stored in the microcomputer 8, and the channel
input of the test tone signal makes one round, and the confirmation of the connection of the
amplifier 2 and the speaker 3 is completed in all channels. In the case of a connection failure of
three or more channels, each speaker 3 that reproduced the test tone signal of the wrong
channel is a speaker that the microcomputer 8 sequentially inputs the test tone signal to each
channel and the sound of the test tone signal is output. The connection line is disconnected, and
the speaker 3 from which sound is output is connected to the output terminal 5 of the blinking
display A (S10).
[0032]
If the wrong channel is 2, automatic input switching is activated in the input signal processing
unit 7 to restore the correct state. If the error is 1, there is a connection failure, and the
instruction to reconnect is issued from the microcomputer 8 to the display 9 by the reconnection
display, and the operator re-reads the speaker at the position where the display A of the display 9
blinks. Connect and check the output of the test tone signal by sound. In this case, if there is a
connection failure at the speaker side, the connection at the output terminal 5 and the input
terminal 6 of the speaker 3 other than the connection part may have a cause, so the confirmation
operation can be performed immediately.
[0033]
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10
When the sound and display of all the channels match, the switches 14a-14f are turned on to
remove the influence of the detection elements 13a-13f on the amplifiers 2a-2f (S12). The
operator performs key input from the operation unit 10 according to the blinking display of the
displays A and S of the display 9 by the microcomputer 8 and completes the connection of the
speakers 3a to 3f.
[0034]
According to the audio apparatus of the present invention, the consumption of power supplied to
the fixed position speakers of the plurality of speakers is detected to display the connection state
of the output amplifier and the speakers. The connection to the output terminal can be easily
confirmed.
[0035]
Brief description of the drawings
[0036]
1 is a block diagram showing an embodiment of the audio device of the present invention.
[0037]
2 is a flowchart showing the operation of the microcomputer used in the present embodiment.
[0038]
3 is a diagram for explaining a display example of the present embodiment.
[0039]
Explanation of sign
[0040]
DESCRIPTION OF SYMBOLS 1 audio apparatus 2 amplifier 3 speakers 4 and 6 input terminal 5
output terminal 7 input signal processing part 8 microcomputer 9 display 10 operation part 11
reproduction part 12 output terminal 13 detector 14 switch 15 power supply 16 level controller
17 screen display
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