JPS61170905A - Reproducing device - Google Patents

Abstract

PURPOSE:To reproduce only either of reproducing signals from two head elements selectively by selecting and supplying one of the reproducing signals from the 1st and the 2nd hed elements to a reproducing circuit independently. CONSTITUTION:When interlocking changeover switches 23, 25, and 28 are placed at sides of fixed contacts (a) and interlocking changeover switches 24 and 26, and 27 are placed at sides of fixed contacts (b), only the L signal reproduced by the 1st heat element 2 is outputted through sound reinforcing speakers 15 and 16. When the switches 23, 25, and 28 are placed at sides of contacts (b) and the switches 24, 26, and 27 are placed at sides of contacts (a), only the R signal reproduced by the 2nd head element 3 is outputted. Then when the interlocking changeover switches 23, 25, and 28 and interlocking changeover switches 24, 25, and 27 are placed at sides of contacts (a), the L signal repro duced by the 1st head 2 is inputted to amplifier 4 and 5 and the L signal repro duced by the 2nd head element 3is inputted to the reproducing circuit. Therefore, the L and R signals are mixed and reinforced. Consequently, the two signals are reproduced simultaneously independently or while mixed together.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a playback device such as a tape recorder or record player equipped with an audio multiplexing circuit. A recording medium recorded on separate tracks is used to reproduce the above-mentioned music and singing voice individually and used as a singing practice machine,
Furthermore, it is frequently used as a training device for language and other learning using a recording medium in which audio and audio are recorded on separate tracks. Therefore, various playback circuits and playback devices have already been proposed for the above-mentioned training machine, but among them, the playback device described below is the basic playback device of the present invention, and its configuration and operation will be explained below. do.

FIG. 3 is a circuit diagram of the main part of the above playback device.

Reference numeral 1 denotes a stereo playback head, which is composed of a first head element 2 for playing back the left channel and a second head element 3 for playing back the right channel.

4 is an amplifier for amplifying the reproduced signal from the first head element 2, 5 is an amplifier for amplifying the reproduced signal from the second head element 3, and 6.7 is an amplifier for transmitting the reproduced signal from the amplifier 4.5 to the subsequent stage. an interlocking changeover switch for selecting whether to send or send only one of the reproduced signals to the subsequent stage; 8;
9, 10, 11 are mixing resistors, 12 is a stereo/monaural selector switch, 13 is a low frequency amplifier for the left channel, 14 is a low frequency amplifier for the right channel, 1
5.16 is a speaker for amplifying the reproduced signal from the low frequency amplifier 13.14, 17 is a microphone, and 18 is a microphone amplifier. Further, the fixed contacts a and b of the changeover switch 6 are connected to the output side of the amplifier 4 along with the fixed contacts of the changeover switch 7, and the fixed contacts a and c of the changeover switch 7 are also connected to the fixed contacts of the changeover switch 6. It is connected to the output side of the amplifier 5 together with C.

The operation of the playback device configured as described above will be described below.

First, when the selector switch 6.7 is switched to the fixed contact a, the reproduction signal reproduced from the first head element 2 (hereinafter referred to as
It is called the L signal. ) and the reproduction signal (hereinafter referred to as the R signal) reproduced from the second head element 3 are amplified by amplifiers 4 and 5, respectively, and are passed through a changeover switch 6.7 and a mixing resistor 8.9 to a low frequency signal. The signals are further amplified by amplifiers 13 and 14 and amplified by each speaker 15 and 16. In this state, the above signal and the R signal recorded on the two tracks of the recording medium are individually amplified by the speakers 15 and 16, but when the selector switch 12 is connected, the L signal is output to both the speakers 15 and 16. and the R signal are mixed and amplified. Next, when the selector switch 6.7 is switched to fixed contact, only the L signal reproduced by the first head element 2 is sent to the subsequent stage, amplified by the low frequency amplifier 13.14, and amplified by the speaker 15.16. be done. Even if the selector switch 12 is connected in this state, there will be no change in the sound amplified by the speaker IE5.16 because the same signals will be mixed. Further, when the changeover switch 6.7 is switched to the fixed contact C, only the R signal reproduced by the second head element 3 is sent to the subsequent stage, and is reproduced in the same manner as in the case of the above signal. Even if the selector switch 12 is connected in this state, there is no change as in the above signal. Furthermore, since the external mixing operation using the microphone is not discussed in the present invention, a description thereof will be omitted.

Problems to be Solved by the Invention However, in the above configuration, the first problem is solved by the invention. When the L signal and R signal reproduced from the second two head elements are simultaneously reproduced via their respective amplifiers and loudspeakers, Since it was impossible to select only one of these playback signals and play that playback signal on both the left channel and right channel loudspeakers,
As a singing practice machine, it is not possible to practice things such as correcting the pitch of partial parts or how to set the rhythm, and as a language learning machine, it is not possible to selectively learn by picking out only the answers for the necessary parts. It had a point.

In view of the above-mentioned problems, the present invention provides an L signal reproduced from two head elements capable of system stereo reproduction using a simple configuration.
Provided is a playback device capable of selecting and playing back only one of the playback signals from these two heads when both the and R signals are being played back by a loudspeaker at the same time. It is something to do.

Means for Solving the Problems In order to solve the above problems, the playback device of the present invention supplies both the playback signals from the first head element and the second head element capable of stereo playback to the playback circuit. a first means for selecting only the reproduction signal from the first head element and supplying it independently to the reproduction circuit; and a first means for selecting only the reproduction signal from the second head element and supplying it independently to the reproduction circuit. This configuration also includes a second means for supplying to the reproducing circuit.

According to the above-described structure, the present invention is capable of playing music using a recording tape or a record disc in which music and singing voices are recorded on separate tracks that can be played back in stereo, while the music and singing voices are being played back at the same time. It has a function to turn off the singing voice and play back only the singing voice, and a function to turn off the singing voice and play only the music. Furthermore, it has the function to turn off the singing voice and play only the music. Furthermore, it has the function to turn off the singing voice and play only the music, and it also has the function to turn off the singing voice and play only the music. Furthermore, it has the function to turn off the singing voice and play only the music. Functions equivalent to those described above can be achieved even by using teaching tapes recorded in 1995, and usage that could not be achieved with conventional methods is possible.

Embodiments Hereinafter, reproduction apparatuses according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the circuit configuration of a reproducing apparatus according to a first embodiment of the present invention. In FIG. 1, 1 is a stereo playback head, 2 is a first head element, 3 is a second head element, 4.6 is an amplifier, 13° and 14 are low frequency amplifiers, 1
! 5.16 is a loudspeaker and has the same configuration as that shown in FIG. 19, 20° 22 is a movement changeover switch, fixed contacts a and b of the changeover switch 1e and fixed contact C of the changeover switch 20 are connected to the first head element 2 for reproducing the L signal, and fixed contacts of the changeover switch 19 are connected to the first head element 2 for reproducing the L signal. C and selector switch 2o
Fixed contacts a and b are connected to the second head element +3 for reproducing the R signal. The changeover switch 22 has the same function as the changeover switch 12 described in FIG. 3, but is configured to switch in conjunction with the changeover switches 19 and 20. The changeover switch 21 switches from the LR signal mixed state to the L signal or R signal.
This is a changeover switch that momentarily selects a signal, and is normally switched to the fixed contact α side.

The operation of the playback device configured as described above will be described below with reference to FIG. 1.

First, when the changeover switches 19, 20, and 22 are switched to the fixed contact a, the L signal reproduced from the first head element 2 is transferred to the amplifier 4. The R signal, which is amplified by the loudspeaker 16 via the low frequency amplifier 13 and reproduced from the second head element 3, is amplified by the loudspeaker 16 via the amplifier 5 and the low frequency amplifier 14. The fixed contact a of the changeover switch 22 is an empty contact, and in this switching state, the L signal and the R signal are not mixed and reproduced. Furthermore, in this state, switch to Hey Te2. Free fixed contact β
When switched to I, the above-mentioned R signal is not reproduced from the loudspeaker 16, and only the above signal is played back by the loudspeaker 16. Next, the changeover switch 19,
20. When 22 is switched to fixed contact A, both the L signal and R signal are input to the subsequent regeneration circuit in the same way as when switching to fixed contact a, but at the same time, switch 22 is switched to A part of the L signal is sent to the input side of the amplifier 50 via
A portion of the R signal is reproduced to the input side of the amplifier 4, and the above signal and the R signal are mixed and amplified from the loudspeakers 15 and 16. In this state, selector switch 2
1 to the vacant fixed contact β, the R signal reproduced by the second head element 3 disappears, and only the L signal reproduced by the first head element 2 is transmitted from both loudspeakers 15 and 16. The sound is amplified. Next, selector switches 19, 20, 2
2 to fixed contact 0, the L signal reproduced by the first head element 2 is input to the amplifier 5 via the changeover switch 20, and the R signal reproduced by the second head element 3 is input to the amplifier 5 via the changeover switch 20.
Since the signal is not input to the amplifier 4 via the changeover switch 19, the lines of the L signal and the R signal are reversed compared to when the fixed contact bK is switched. However, when the changeover switch 22 is turned on, the above signal and the R signal are mixed and the sound is amplified from both the loudspeakers 16, 1 and 6, and the content to be amplified is switched between the fixed contacts. The result is the same as if it were replaced. In this state, when the changeover switch 21 is switched to the vacant fixed contact β, the first
The L signal reproduced from the second head element 2 disappears, and only the R signal reproduced by the second head element 3 is transmitted to the loudspeaker 1.
The sound will be amplified from both 5.16.

As described above, according to this embodiment, by inserting the changeover switch 21 that can be switched instantaneously between the common contact of the changeover switch 20 and the common contact of the changeover switch 22, a simple circuit configuration can be achieved. Moreover, it is possible to instantaneously and continuously switch and reproduce only one of the L signal and the R signal reproduced by the first head element 2 and the second head element 3. It can be used not only as a singing practice machine, but also as a language learning machine. The same effect can be obtained by inserting the changeover switch 21 between the common contact of the changeover switch 19 and the fixed contacts o of the changeover switch 22.

FIG. 2 is a circuit diagram of a reproducing apparatus showing a second embodiment of the present invention. In Figure 2, there are two differences from the configuration in Figure 1.
The contact movement selector switch 23°25.28 and the same 2
This is because interlocking contact changeover switches 24, 26, and 27 are provided. Briefly explaining the configuration below, a common contact of a changeover switch 23 is connected to the output end of the first head element 2, and a common contact of a changeover switch 24 is connected to the output end of the second head element 3. Next, the fixed contact a of the changeover switch 23
and fixed contact a of the changeover switch 24, and further connected to a common contact of the changeover switch 25 and the changeover switch 26. Next, the fixed contact S of the changeover switch 23 and the fixed contact & of the changeover switch 25 are connected to the fixed contact S of the - changeover switch 27 and the fixed contact a of the changeover switch 28. The fixed contacts of the changeover switch 25 and changeover switch 26 are empty contacts. Furthermore, the common contact of the changeover switch 27 is connected to the input side terminal of the amplifier 4, and the common contact of the changeover switch 28 is connected to the input side terminal of the amplifier 5.

The operation of the playback device configured as described above will be described below.

First, set the interlocking changeover switches 23, 25, and 28 to fixed contact a.
24.26.2.
7 to the fixed contact, only the L signal reproduced from the first head element 2 passes through the fixed contact a of the changeover switch 23 and the fixed contact a of the changeover switch 25, and then passes through the changeover switch 27 and the changeover switch 25. It passes through the switch 28, the amplifiers 4 and 6, the low frequency amplifier 13, and the low frequency amplifier 14, and is amplified from both loudspeakers 15 and 16.

Next, change the motion changeover switches 23, 25, 28 to fixed contacts, and then switch the interlocking changeover switches 24, 26, 27.
When switching to the fixed contact switch, only the R signal reproduced by the second head element 3 is transferred to the fixed contact 1 of the changeover switch 24.
The sound is amplified via the fixed contact a of the changeover switch 26J in the same manner as in the case of the above signal. Next, the interlocking changeover switch 23, 25°28 and the movement changeover switch 24
．． 25. When all 27 are switched to fixed contact a, the first
The L signal reproduced by the head element 2 is transferred to the selector switch 2.
3. The R signal is inputted to the amplifiers 4 and 5 through the changeover switch 26, changeover switch 26, changeover switch 27, and changeover switch 28, respectively, and is reproduced by the second head element 3. The signal is input to the reproduction circuit in the same way as the original signal. Therefore, the above signal and the R signal are mixed with each other and amplified. Similarly, when all the contacts of the two interlocking changeover switches are changed to fixed contacts, the L reproduced by the first head element 2
The signal is input to the amplifier 4, passes through the low frequency amplifier 13, and is amplified by the loudspeaker 16. The R signal reproduced by the second head element 3 is input to the amplifier 6 and amplified by the loudspeaker 16 via the low frequency amplifier 14.

As described above, in the second embodiment, depending on how the changeover switch is selected, (7) L signal and R signal are mixed and reproduced, ljL signal only is reproduced, (X R signal only is reproduced,
(-cl) Four types of selections, such as reproducing the L signal and the R signal independently and simultaneously, can be easily achieved by simply changing the configuration of the changeover switch.Furthermore, in the first embodiment, the interlocking changeover switches 19, 20. However, in the second embodiment, the desired operation can be performed regardless of the state before selection. It has the advantage of being able to make instantaneous selections.

Effects of the Invention As described above, the present invention provides a method for instantaneously reproducing signals from the first head element capable of stereo reproduction while supplying the reproduction signals from the first head element capable of stereo reproduction and the second head element to the reproduction circuit. a first means for selecting only the reproduction signal from the second head element and supplying it independently to the reproduction circuit; and a first means for momentarily selecting only the reproduction signal from the second head element and supplying it independently to the reproduction circuit. By providing the second means, when the present device is used as a singing practice device using a recording medium in which music and singing voices are individually recorded on two tracks that can be played back in stereo, the music and singing voices can be Even if they are being played at the same time, you can turn off only the music and play only the singing voice, and you can also turn off only the singing voice and play only the sound, so you can only listen to the parts that you are not satisfied with. New functions are available, such as selecting and matching the pitch, or selecting just the parts you haven't practiced enough to match the rhythm. Also, when using the above-mentioned recording medium that stores two voices as a learning device for language learning, etc., it is possible to turn off one voice and play the other voice alone, allowing the learner to It is also possible to realize the function of extracting and erasing only the parts that have already been mastered, or extracting only the parts that still need to be studied and reviewing them again.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a playback device according to a first embodiment of the present invention, FIG. 2 is a circuit diagram of a playback device according to a second embodiment of the present invention, and FIG. 3 is a circuit diagram of a conventional playback device. be. 1...stereo playback head, 2,3...head element, 4.5...amplifier, 6,7,12,
19°20.21. 22, 23, 24, 25, 26゜27.28・ Changeover switch, 8, 9, 10゜11...
・Mixing resistor, 13.14...Low frequency amplifier,
15.16... Public address speaker.

Claims (1)

[Claims] A stereo playback head for playing back this recording medium using a recording medium in which music and a singing voice, or voices and voices, are each recorded independently on two tracks capable of stereo playback, and a first stereo playback head constituting the stereo playback head. a first head element for selecting only the reproduction signal from the first head element and supplying it independently to the reproduction circuit while the reproduction signals from the head element and the second head element are both supplied to the reproduction circuit;
and second means for selecting only the reproduction signal from the second head element and supplying it solely to the reproduction circuit.