JP3793954B2 - Audio equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an audio device that outputs a multi-channel audio signal and performs surround reproduction with a speaker.
[0002]
[Prior art]
In a conventional audio device, signals from a plurality of playback channels are reproduced from a plurality of speakers, and the sound signals emitted from the respective speakers are sounded from a predetermined direction so that a predetermined sound image is surround-reproduced at a listening position. The channel specification was changed or the level was adjusted so as to appear.
[0003]
In addition, the listener plays 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 determined position is connected to the determined channel. Surround playback was performed after the speaker configuration setting operation for sequentially distinguishing and setting according to the program for trial listening to be confirmed.
[0004]
[Problems to be solved by the invention]
In order to obtain a three-dimensional sound image having a surround effect by connecting a speaker cord having one end connected to a speaker to an output terminal of an audio device having signals of many channels and reproducing a multi-channel sound field, a recording medium is used. When reproducing and amplifying the power to obtain the speaker output, if a wrong wiring is made on the speaker output terminal side, a desired sound image cannot be obtained. Also, there is a risk of damage to the speakers if a setting is made by connecting a speaker for middle / high tone playback to the channel for bass playback, and there is a risk that the speaker will be damaged. It was required to connect a speaker, and the connection setting operation was complicated.
Furthermore, in the speaker configuration that is performed to confirm the speaker connection, more complicated setting operations such as delay correction and level adjustment are performed after the speaker is installed and connected at a predetermined fixed position. Is done. According to the present invention, it is possible to promptly check whether or not the speaker wiring is correctly performed, detect 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 performed so that the speaker can be easily connected to the target output terminal from the displayed content.
[0005]
[Means for Solving the Problems]
The present invention provides an audio apparatus comprising a plurality of output terminals for connecting a plurality of speakers corresponding to a plurality of channels, an input channel detecting means for detecting a channel to which a test tone signal is input among the plurality of channels, Input channel display means for displaying a channel detected by the input channel detection means, speaker connection terminal detection means for detecting an output terminal to which a speaker is connected among the plurality of output terminals, and output detected by the speaker connection detection means Based on the speaker connection terminal display means for displaying the terminal, the channel detected by the input channel detection means and the output terminal detected by the speaker connection terminal detection means, the output of the predetermined channel is supplied to the predetermined output terminal. and a judging means for judging whether or not it is It is an audio apparatus according to claim.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an audio apparatus of the present invention. FIG. 2 is a flowchart showing the operation of the microcomputer (hereinafter referred to as a microcomputer), and FIG. 3 is a diagram showing an example of the display pattern of the display.
[0013]
In the audio apparatus 1 of this embodiment, a reproduction signal is output from the output terminal 12 of the reproduction apparatus 11 that reproduces a recording medium on which stereophonic information and image information such as a laser disk (hereinafter referred to as LD) are recorded, to the input terminal 4. Entered. The reproduction apparatus 11 is controlled by the microcomputer 8 with a synchronization signal, and performs selective reproduction of a desired LD track.
[0014]
The audio apparatus 1 drives 6 speakers each including 5 channels (FL, FR, C, SL, SR) for supplying and supplying surround signals to speakers for 5 channel surround playback, and a subwoofer (Sub Woofer). Amplifiers 2a to 2n (n = f) to be built-in, and output terminals 5a to 5f provided on back panels or the like to which the outputs of the amplifiers are connected, respectively, and speakers 3a arranged at fixed positions in the listening room Are connected to input terminals 6a to 6f of .about.3f by connecting lines.
[0015]
The input signal processing unit 7 performs signal processing such as demodulation of the input signal and digital / analog conversion. The input signal processing unit 7 performs signal processing, and audio signals divided into signals of the respective channels are supplied from the terminals 7a to 7f to the respective amplifiers.
[0016]
The amplifiers 2 a to 2 f include level controllers 16 a to 16 f that control the input level by the microcomputer 8 based on the operation of the operation unit 10.
The amplifiers 2a to 2f of the respective channels are provided with minute resistors for detecting power consumption in their power supply units, and have detection elements 13a to 13f for detecting voltages at both ends thereof, and switches 14a to 14c for short-circuiting the respective detection elements. 14f. Each detection element 13a-13f detects the electric current supplied from a power supply.
Further, part of the image information reproduced by the reproduction apparatus 11 is captured by the microcomputer 8 and displayed on the display unit 9 or directly displayed on the screen display unit 17 such as a television screen.
[0017]
The microcomputer 8 stores the test tone signal and image display signal of each channel in the memory of the microcomputer 8 or the speaker arrangement pattern information which is a part of the test tone signal and image information reproduced from the recording medium by the reproducing device 11. It is captured. The speaker layout is displayed on the display 9 as shown in FIG.
[0018]
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 right (FR) speaker, and the amplifier 2d in surround. The left (SL) speaker is designated in advance, the amplifier 2e is designated as a surround right (SR) speaker, and the amplifier 2f is designated in advance as a subwoofer.
[0019]
The microcomputer 8 controls the input signal processing unit 7 to select a signal to the amplifier of the determined channel and input the signal to 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. When 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, the power supplied from the power supply circuit of the amplifier 2 increases, and the output terminal of the amplifier 2 is surely connected. As the speaker 3 is connected, the output display S can be blinked to confirm the coincidence between the display of A and S and the direction of the sound.
[0020]
When the test tone signal is the center, the power consumption is detected by the detection element 13a. As the display, Center display A blinks. In the normal case, the display A and S match and blink in pairs, but they do not match when the channel output terminals 7a to 7f of the input signal processing unit 7 are exchanged by special operation designation.
[0021]
Also, as shown in FIG. 3, a plurality of speakers 3a to 3f are arranged in association with the surround listening position, and the display S on the output terminal side indicating that the input channel display A and the speakers 3a to 3f are connected is approached. Since it is displayed at the relevant position, the test tone signal is switched in the channel order using the test tone sound source built in the microcomputer 8, and A is blinking, and the relevant part S is not blinking or the test tone is heard. If not, it is immediately known that the signal has been cut off after the output terminal 5 to which the speaker 3 is connected, and the cause can be investigated.
[0022]
When the playback device 11 plays back the recording medium and the setting operation of the optimum trial 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 is performed based on the stored information. Can be easily set by instructing completion by key input of the operation unit 10.
[0023]
A speaker layout diagram is displayed on the display 9 or the screen display 17, and the level controller 16 adjusts the sound level of the speakers 3a to 3f displayed by the position display A of the test tone signal by flashing and the connection display S for each channel. The delay time is adjusted by controlling the delay amount in the input signal processing unit 7 by the microcomputer 8 by the operation unit 10. Also in this case, the microcomputer 8 performs the operation of confirming whether or not the connection of the output terminals 5a to 5f of the amplifiers 2a to 2f with the speakers 3a to 3f is reliably maintained by inputting the test tone signal of each channel. it can.
[0024]
In addition, the speaker arrangement display pattern and test tone signal data stored in advance in the memory of the microcomputer 8 are read in place of the test tone signal by the reproducing apparatus 11 described above, and the display of the speaker arrangement shown in FIG. The level controller 16a-16f adjusts the sound level from the position of the speaker 3a-3f connected to the position display A of the input channel of the test tone signal by blinking the display position and the display S of the speaker connection. The adjustment of the delay time is performed by the channel, the setting operation is performed by the operation unit 10, the delay amount is set by the input signal processing unit 7 under the control of the microcomputer 8, and the speaker configuration is set. The microcomputer 8 can always perform an operation of confirming whether or not the connection of the speakers 3a to 3f to the output terminals 5a to 5f of the amplifier 2 is maintained by an instruction of no operation 10.
[0025]
Further, the input signal processing unit 7 described above is described as switching the input channel. However, in the case of an audio apparatus in which the setting of the input channel is fixed, the output terminals 5a to 5f are connected to the speakers 3a to 3f at predetermined positions. Connected. Therefore, the test tone signal of each channel is switched by the microcomputer 8 to determine whether or not the speakers 3a to 3f are connected to the output terminals 5a to 5f, so that power is supplied to the amplifiers 2b to 2f via the detector 13a. The connection and detection are made common, and the flashing display of the test tone signal A of the input channel or the flashing display of S indicating the connection of the speaker may be confirmed to confirm the sound match.
[0026]
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 apparatus 1 (S1). The operation unit 10 instructs the playback device 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 unit 9, and the display unit 9 displays the arrangement of each speaker on the screen. The microcomputer 8 controls the playback device 11 so as to sequentially generate test tone signals for each channel. The display 9 and the screen display 17 display the position of the speaker to which the test tone signal should be output (S3).
[0027]
For example, in the speaker display, as shown in FIG. 3, A in the display corresponding to a predetermined speaker position blinks to alert the operator, and the test tone signal is input to the speaker at the position A.
[0028]
The microcomputer 8 turns off or turns on any of the switches 14a to 14f to search which channel the test tone signal is input to (S4), and the power consumption is reduced because the speaker load is connected. An increase in current consumed is detected. When the power consumption is detected, the microcomputer 8 determines that any of the speakers 3a to 3f is connected (S5), and displays the speaker position in a fixed position S to which the outputs of the predetermined amplifiers 2a to 2f are supplied. Is displayed blinking (S6).
[0029]
The microcomputer 8 displays a confirmation message on the display 9 to confirm whether the position of the speaker 3 where the speaker output sound of the test tone signal is output matches the position of the blinking display S (S7). The setting operation is performed from the unit (S11). If the setting operation is not performed in the operation unit 10 for a certain period, the microcomputer 8 confirms the coincidence of the flashing display of A and S displayed on the display unit 9, determines the coincidence, determines that the speaker connection is correctly set, The test tone signal of the next channel is output, and the determination is repeated sequentially.
[0030]
When the blinking positions of A and S displayed on the display 9 are different, the operator inputs an error by key input from the operation unit 10 and connects the speaker 3 to the output terminal 5 of the amplifier 2 with A. The connection to the speaker 3 at the display location is reconnected, or the result is stored in the microcomputer 8, the channel input of the test tone signal is completed, and the confirmation of the connection between the amplifier 2 and the speaker 3 is completed for all channels.
In the case of a connection difference of 3 channels or more, each speaker 3 that has reproduced the test tone signal of the wrong channel is connected to the speaker in which 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 removed, and the speaker 3 that is emitting sound is connected to the output terminal 5 of the blinking display A (S10).
[0031]
When the wrong channel is 2, automatic input switching is activated in the input signal processing unit 7 to restore the correct state.
If the mistake is 1, since the connection is poor, a reconnection display is given from the microcomputer 8 to the display 9, and the operator reconnects the speaker at the position where the display A of the display 9 is blinking. Connect and check the output of the test tone signal with sound. In this case, if there is a poor connection on the speaker side, the connection may be caused by the connection at the output terminal 5 and the input terminal 6 of the speaker 3 other than the connection portion, so that the confirmation work can be performed immediately.
[0032]
When the sound and display of all the channels match, the switches 14a to 14f are turned on to eliminate the influence of the detection elements 13a to 13f on the amplifiers 2a to 2f (S12).
The operator inputs a key from the operation unit 10 in accordance with the flashing display of the displays A and S on the display 9 by the microcomputer 8, and completes the connection of the speakers 3a to 3f.
[0033]
【The invention's effect】
According to the audio device of the present invention, since the power consumption supplied to the speakers at the fixed positions of the plurality of speakers is detected and the connection state between the output amplifier and the speaker is displayed, the connection to the output terminals of the amplifiers of the plurality of speakers is performed. Can be easily confirmed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an audio apparatus of the present invention.
FIG. 2 is a flowchart showing the operation of the microcomputer used in this embodiment.
FIG. 3 is a diagram illustrating a display example of the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Audio apparatus 2 Amplifier 3 Speaker 4, 6 Input terminal 5 Output terminal 7 Input signal processing part 8 Microcomputer 9 Display 10 Operation part 11 Playback apparatus 12 Output terminal 13 Detector 14 Switch 15 Power supply 16 Level controller 17 Screen display

Claims (1)

In an audio apparatus comprising a plurality of output terminals for connecting a plurality of speakers corresponding to a plurality of channels,
An input channel detecting means for detecting a channel to which a test tone signal is input among the plurality of channels;
Input channel display means for displaying the channel detected by the input channel detection means;
Speaker connection terminal detecting means for detecting an output terminal to which a speaker is connected among the plurality of output terminals;
Speaker connection terminal display means for displaying an output terminal detected by the speaker connection detection means ;
Determining means for determining whether an output of a predetermined channel is supplied to a predetermined output terminal based on the channel detected by the input channel detecting means and the output terminal detected by the speaker connection terminal detecting means ; An audio device comprising:

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