JPH0531715Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Field of Application] This invention relates to a recording output selection circuit for audio equipment, such as an audio amplifier. [Prior Art] FIG. 2 is a circuit diagram showing the configuration of a recording output selection circuit in a conventional audio amplifier (hereinafter referred to as amplifier). In this figure, 1A to 1
D is an input terminal for inputting each source signal output from an audio device such as a record player or a compact disc player (CD), 2 is an input terminal for inputting a source signal output from a tape recorder, and 3 is an input terminal for inputting source signals output from a tape recorder. This is a recording output terminal for supplying recording signals to a tape recorder. 4 is an input selector that selectively selects the source signal supplied via each input terminal 1A to 1D; 5 is an input selector that selects the source signal selected by the input selector 4 and the source signal supplied via the input terminal 2; Alternative selection switches 6 to 9 are switches for alternatively selecting whether or not to insert the sound adjustment circuit 10 into the signal line during recording, and are designed to operate in conjunction with each other. A common terminal c of the switch 8 is connected to an input end of an amplification system (not shown).
Further, the sound adjustment circuit 10 is a circuit for adjusting sound such as a graphic equalizer or a tone control circuit. In such a configuration, with the input selector 4 and switch 5 set as shown,
When switches 6 to 9 are set to the terminal a side as shown in the figure, the source signal output from the device (CD in this case) selected by the input selector 4 is transferred to the switch 7 → sound adjustment circuit 10 → switch 9 → recording output terminal. 3 to the tape recorder. Thereby, the acoustic adjustment circuit 10 can be inserted into the signal line. Further, when the switches 6 to 9 are set to the terminal b side, the source signal is supplied to the tape recorder via the switch 7→switch 9→recording output terminal 3. This allows the acoustic adjustment circuit 10 to be connected to the signal line.
is not inserted. In this way, in the circuit shown in FIG. 2, by switching the switches 6 to 9, it is possible to arbitrarily decide whether or not to insert the acoustic adjustment circuit 10 into the signal line. Next, FIG. 3 is a circuit diagram showing another example of the configuration of a recording output selection circuit in a conventional amplifier. Note that in this example, the acoustic adjustment circuit 10 is not provided in the amplifier;
It is becoming more and more common to attach it externally. Further, the same reference numerals are given to the parts corresponding to those in FIG. 2 described above, and the explanation thereof will be omitted. In FIG. 3, 11 is an input selector, 12 is a recording selector that selectively selects the source signal supplied through each input terminal 1A to 1D and supplies it to the recording output terminal 3, and 13 and 14 are external This is an input/output terminal for connecting a sound adjustment device. 15 is an external sound adjustment device, and this sound adjustment device 15 has an input terminal (IN) 16, an output terminal (OUT) 17, and a recording output terminal (RECOUT).
18 are provided respectively. In addition, the same device 1
5 is provided with an on/off switch for the sound adjustment circuit, and can output the source signal from the output terminal 17 through the sound adjustment circuit, or output the source signal as it is from the output terminal 17, and It is also possible to output the source signal to either the output terminal 17 or the recording output terminal 18 through the audio adjustment circuit. [Problems to be solved by the invention] By the way, when a certain source signal output is being played back through a speaker and the source signal is being recorded at the same time, it is possible to simultaneously record the source signal with or without sound effects, while the output is being played back through the speaker. Independently of this, there is a desire to instantly add partial sound effects only to the recording output, and to perform editing that eliminates noise when switching sound effects. However, in the circuit shown in FIG. 2 described above, a total of four switches are required to insert or remove the acoustic adjustment circuit 10 from the signal line. Also, during recording, the sound adjustment circuit 10
cannot be used in the amplification system following the switch 8, and when the acoustic adjustment circuit 10 is used in the amplification system, it cannot be used in the recording system subsequent to the recording output terminal 3. become unable. In addition, in the circuit shown in FIG. 3, the recording input terminal of the tape recorder is connected to the recording output terminal 3 of the amplifier side, whether the external sound adjustment device 15 is used or not.
It must be connected to the recording output terminal 18 of the external sound adjustment device 15. Further, when switching the input selector by remote control, if an external sound adjustment device 15 is used, the tape recorder will not be able to switch the input selector. In addition, the output of the external sound adjustment device 15 is turned on/off.
Since either the output terminal 17 or the recording output terminal 18 is set by the off switch, the sound adjustment circuit cannot be used for both the recording system and the amplification system at the same time. This invention was developed against this background, and its purpose was to simplify the configuration of the recording output selection circuit and to allow the acoustic adjustment circuit to be used for both the recording system and the amplification system at the same time. Another object of the present invention is to provide a recording output selection circuit for audio equipment that does not require any special connection changes even when an external sound adjustment device is used, and further allows the use of remote control. . [Means for solving the problem] This invention includes an input selector that selectively selects an input source signal and supplies it to a subsequent circuit having an acoustic adjustment circuit;
In an audio device having a recording selector that selectively selects a recording output, a first switch means that selectively selects an input or an output of the sound adjustment circuit; a second one that selectively selects the input or output of the acoustic adjustment circuit;
The output of the first switch means is supplied to the recording selector as a selected output, and the output of the second switch means is supplied to an amplification system. [Function] According to the above configuration, when the input of the sound adjustment circuit is selected by the first switch means, the input source signal is supplied to the external recording device (tape recorder, etc.) via the recording selector without passing through the sound adjustment circuit. be done. Further, when the output of the sound adjustment circuit is selected by the first switch means, the input source signal passes through the sound adjustment circuit and is supplied to the external recording device via the recording selector. On the other hand, independently of the above-described operation, when the input or output of the audio adjustment circuit is selected by the second switch means, the input source signal that does not go through the audio adjustment circuit or the input source signal that goes through the audio adjustment circuit is Supplied to the amplification system. In this way, the recording output selection circuit can be constructed with a simple configuration of selectively selecting the input and output of the acoustic adjustment circuit and supplying the selected one to one of the selected terminals of the recording selector. can be realized, and with this circuit, the acoustic adjustment circuit can be used for both the recording system and the amplification system at the same time. [Example] Hereinafter, an example of this invention will be described with reference to the drawings. FIG. 1 is a wiring diagram showing the configuration of a source signal input section of an amplifier using a recording output selection circuit according to an embodiment of the present invention. In addition, in this figure,
Portions corresponding to those in FIGS. 2 and 3 described above are designated by the same reference numerals, and their explanations will be omitted. In FIG. 1, the input terminal of the acoustic adjustment circuit 10
IN is connected to the terminal a of the switch 20, and is also connected to the common terminal c of the input selector 11,
Furthermore, it is connected to terminal b of switch 21. Further, the output terminal OUT of the sound adjustment circuit 10 is connected to the terminal b of the switch 20, and is also connected to the terminal a of the switch 21. Also, the common terminal c of the switch 20 is the terminal d of the recording selector 22.
(hereinafter referred to as source terminal d). Further, the common terminal c of the switch 21 is connected to the input terminal of the subsequent stage amplification system. The above-described switch 20 and recording selector 22 constitute a recording output selection circuit. Moreover, the recording selector 22 has five terminals a,
b, d, e, f, and as shown in the figure, each terminal a, b,
d and e, respectively. Further, a common terminal c of the recording selector 22 is connected to a recording output terminal (RECOUT) 3. In such a configuration, the input selector 11 is set to an arbitrary position (for example, CD), and the following first,
As shown in Table 2, by setting the switches 20, 21 and the recording selector 22, it is possible to enable or disable the sound adjustment circuit 10 for both the recording system and the amplification system at the same time. Note that the symbol "x" shown in the table indicates that the switch can be set at an arbitrary position.

【table】

[Table] As described above, according to the embodiment of this invention, the recording selector 22 is provided with the source terminal d, and the common terminal c of the switch 20 is provided between the source terminal d and the input/output terminal of the sound adjustment circuit 10. and also,
Since the common terminal c of the switch 21 provided between the input and output ends of the sound adjustment circuit 10 is connected to the input end of the amplification system at the rear end, a recording output selection circuit can be realized with a simple configuration, and the sound adjustment circuit 10 Both the recording system and the amplification system can be used at the same time. Furthermore, even when using an external sound adjustment device 15, the connection between this device 15 and the tape recorder remains connected to the recording output terminal (RECOUT) 3 regardless of whether the device 15 is in use or not. This is fine, so there is no inconvenience caused by changing the connection. This means that even if the input selector 11 is controlled by remote control, only the tape recorder will not be excluded from switching by remote control. In the embodiment, the case where the sound adjustment circuit 10 is built into the amplifier is shown, but it is also possible to use an external sound adjustment device. Alternatively, the switch 20 may be omitted and the path may be always on. [Effects of the invention] As explained above, according to this invention, when an external sound adjustment device is used, there is no need to connect the device to the recording input terminal of the tape recorder. Furthermore, even if the input selector is operated by remote control, only the tape recorder will not be excluded from the switching by remote control. In addition, by providing a first switch means and a second switch means for switching the presence or absence of sound effects dedicated to the recording system and the sound effects dedicated to the amplification system, the presence or absence of the sound effects can be selected as one of the options of the recording selector. , the recording system and amplification system could be made independent. In other words, when an input source signal is simultaneously supplied to the amplification system and the recording system, the amplification system maintains the state with or without the acoustic effect, and the recording system partially outputs the acoustic effect independently of the amplification system. It is now possible to edit by adding specific information. Furthermore, since one sound adjustment circuit can be used independently for the amplification system and the recording system, it is possible to provide a recording output selection circuit with a simple configuration and a high degree of freedom. Furthermore, since the first switch means and the second switch means only instantaneously switch between the presence and absence of sound effects, especially in recording systems, even when partially switching between the presence and absence of sound effects, noise is generated during switching. You can edit it so that it does not appear.

[Brief explanation of the drawing]

FIG. 1 is a wiring diagram showing a recording output selection circuit for an audio device that is an embodiment of the invention, and FIGS. 2 and 3 are wiring diagrams showing a recording output selection circuit for a conventional audio device. DESCRIPTION OF SYMBOLS 11...Input selector, 20...Switch (first switch means), 21...Switch (second switch means), 22...Recording selector.

Claims (1)

[Claims for Utility Model Registration] An input selector that selectively selects an input source signal and supplies it to a subsequent circuit having an audio adjustment circuit; and an input selector that is installed in parallel with this input selector and selectively selects a recording output. an audio recording selector that selectively selects the input or output of the sound adjustment circuit; and a first switch means that selects the input or output of the sound adjustment circuit in parallel with the first switch means. and a second switch means for selectively selecting, the output of the first switch means being supplied to the recording selector as a selected output, and the output of the second switch means being supplied to an amplification system. A recording output selection circuit for audio equipment, characterized in that: