JP2537772B2 - Karaoke equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mixes a reproduction signal of a reproduction medium such as a tape, a record, and a video disk with a microphone audio signal,
The present invention relates to a karaoke device for loudly listening.

2. Description of the Related Art In recent years, karaoke devices have been widely used and used not only for professional use but also for home use. A conventional karaoke device reproduces an accompaniment signal recorded on a tape or a record and sings a song into a microphone in accordance with it.
We hear both mixed signals from a loudspeaker.

An example of a conventional karaoke device will be described below with reference to the drawings.

For simplicity, a karaoke device using a general tape as a sound source will be described. FIG. 2 shows an example of a circuit diagram of a conventional karaoke apparatus. In FIG. 2, 1 is a microphone jack, 2 is a microphone amplifier, 3 is an echo amplifier, and 4 is an amplifier.
Is a microphone volume, 5 is an accompaniment signal reproducing head, and 5 '
Is a signal playback head for a singing voice of a channel different from that for accompaniment, 6, 6'is a preamplifier, 7 is a voice multiplex balance volume, 8 is a tape mixing amplifier, 9 is a tape volume, 10 is a microphone / tape mixing amplifier, 11 is The main volume control, 12 is a power amplifier, 13-1 is a headphone jack, 14 is a speaker, and 17,17 ', 18,18', 21,25 are resistors.

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

First, a signal from a microphone connected to the microphone jack 1 is amplified by the microphone amplifier 2, added with an echo by the echo amplifier 3, and given to the microphone / tape mixing amplifier 10 via the microphone volume 4. On the other hand, the tape reproduction signal reproduced by the accompaniment signal reproducing head 5 and the singing voice signal reproducing head 5'is amplified by the preamplifiers 6 and 6 ', and the accompaniment is performed by the resistors 17, 17', 18 and 18 'and the voice multiplex balance volume 7. The sound and the reproduced sound of the singing voice are appropriately balanced and amplified by the tape mixing amplifier 8 as a so-called audio multiplex signal in karaoke, and the tape volume 9,
It is added to the microphone tape mixing amplifier 10 through the resistor 25. Then, it is amplified by the power amplifier 12 through the main volume control 11 together with the microphone signal, and is heard by the speaker 14.

Problems to be Solved by the Invention However, in the above-mentioned configuration, since the loudspeaker is used to listen to the sound, the volume becomes considerably louder to obtain sufficient singing comfort, and a noise problem occurs in a residential dense area. I couldn't fully enjoy karaoke. There is also a method to enjoy this by yourself using headphones to solve this problem, but it is good to say that the person around you hears only the raw voice from his / her mouth, which is very unnatural. As a result, he received a humorous feeling, and for that reason he had the problem of hesitating to practice.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a karaoke device that does not give an unnatural feeling as described above and is configured to easily solve the noise problem.

Means for Solving the Problems In order to solve the above problems, the karaoke apparatus of the present invention has a reproduction amplification means for reproducing a reproduction medium, a microphone amplification means for amplifying a microphone input signal, and an output of the microphone amplification means. In response to this, first level adjusting means for adjusting the output level, headphone amplifying means for obtaining a headphone output, output amplifying means for amplifying the output signal output to the speaker output terminal, and output of the output amplifying means are adjusted. And a switching means for switching the output circuit between the first state and the second state,
In the first state of the switching means, the output of the reproduction / amplification means and the adjustment output of the first level adjustment means are mixed and output from the second level adjustment means to the output amplification means. On the other hand, in the second state, only the output of the regenerative amplifying means is outputted to the output amplifying means, and only the output of the regenerative amplifying means at this time is connected to the first amplifying means. The output of the second level adjusting means and the output of the first level adjusting means are mixed and output to the headphone amplifying means.

With the above-described structure, the present invention can be used in the same manner as the conventional karaoke device in the first state of the switching means, and can be used in the second state of the switching means by using the headphones from the reproduction medium from the headphones. The accompaniment sound and the loud sound of the microphone sung by me are mixed and enjoyed as karaoke at an arbitrary volume, and at the same time, only the sound from the playback medium can be heard at a preset constant volume from the speaker. , The live voice of the person who is singing is not heard by others, and the accompaniment of the song comes out from the speaker, so it feels like the TV or radio is ringing, and it is not disturbing to the people around me. Without giving a natural or humorous feeling, and since the person's raw voice is not as loud as the voice expanded through a microphone, hide it. Since it is not necessary to make the reproduced sound from the loudspeaker to be so large, it is possible to achieve the effect that a relatively small sound is required as a whole and there is little trouble in the neighborhood.

Example Hereinafter, a karaoke device using a magnetic tape according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a circuit diagram of a karaoke apparatus according to an embodiment of the present invention. For the sake of simplicity, a karaoke apparatus using a tape as a reproduction medium will be described as in FIG. 2 of the conventional example.
In the figure, those having the same functions as those of the conventional example shown in FIG.

A microphone amplification unit is configured by a microphone amplifier 2 that amplifies a signal from a microphone jack 1 to which a microphone is connected and an echo amplifier 3 that adds an echo to the output of the microphone amplifier 2 if necessary.

The output of the echo amplifier 3 is level-adjusted by the microphone volume 4 which is the first level adjusting means, and is input to the headphone amplifier 15 which is the headphone amplifying means via the resistor 20. The output of the headphone amplifier 15 is connected via a resistor 21 to the L and R terminals of a headphone jack 13-2 described later.

On the other hand, the outputs of the accompaniment signal reproducing head 5 for reproducing a signal from the tape as a reproducing / amplifying means and the signal reproducing head 5'of a singing voice of a channel different from that for accompaniment are amplified by preamplifiers 6 and 6 ', respectively, and resistors 17,17 The balance of the outputs of both heads is adjusted by '18, 18 'and the voice multiplex balance volume 7 and the output is output from this reproducing / amplifying means.

The output of the reproduction / amplification means is input to the microphone / tape mixing amplifier 10, and is input to the power amplifier 12 via the resistor 16. These constitute output amplifying means, and this output is connected to the speaker 14.

The headphone jack 13-2 has a changeover switch consisting of contacts A to E which are changeover means for changing over in tandem with insertion of a headphone plug (not shown). Then, the illustrated state is referred to as a first state, and the state switched in association with the insertion of the headphone plug is referred to as a second state. Contact A
Is connected to the output of the reproducing / amplifying means, contact B is connected to the adjustment output of the microphone volume 4, contact C is connected to the output of the microphone / tape mixing amplifier 10, and contact D is connected.
Is connected to the movable terminal of the volume control 9'which is the second level adjusting means connected to the input side of the power amplifier 12, and the contact E is connected to the input of the headphone amplifier 15 via the resistor 19.

The operation of the karaoke apparatus configured as described above will be described below with reference to FIG.

First, when a headphone plug is not connected to the headphone jack 13-2, that is, when the switching means is in the first state, the contacts A and B are in contact with each other, and the contact D is in contact with the contact C.

The signal from the microphone connected to the microphone jack 1 is amplified by the microphone amplifier 2, the echo is added by the echo amplifier 3, the level is adjusted by the microphone volume 4, and the changeover switch of the headphone jack 13-2 immediately before the resistor 20. Is input to the microphone / tape mixing amplifier 10 together with the reproduction output of the reproducing / amplifying means from the resistors 18 and 18 'through the contact B to the contact A of the headphone jack 13-. The volume level is adjusted by the volume control 9'through the contact A to the contact D of the second changeover switch, amplified by the power amplifier 12, and then amplified by the speaker 14. The resistor 16 is set to a value such that the volume level can be adjusted with the volume control 9 '.

Next, when a headphone plug is connected to the headphone jack 13-2, that is, when the switching means is in the second state, the contacts A and B are separated from each other, and the contact D is in contact with the contact E.

In this state, the signal from the microphone whose level is adjusted by the microphone volume 4 is the contact B of the changeover switch.
Since A and A are not input to the microphone / tape mixing amplifier 10, the resistors 18 and 18 'of the reproducing / amplifying means
Only the tape reproduction output from is amplified by the microphone / tape mixing amplifier 10 and added to the power amplifier 12 via the resistor 16 to be amplified and amplified by the speaker 14. At this time, since the middle terminal of the volume control 9'is connected to the resistor 19 via the contacts D and E of the changeover switch, the signal level does not change even if the position of the middle terminal changes, and
16 and volume volume 9'resistance value and power amplifier 12
The sound is amplified at a constant volume determined by the input resistance (not shown) of the.

On the other hand, the level of the tape reproduction output signal is adjusted by the volume control 9 ', and the contact D to the contact E of the changeover switch are adjusted.
Through the resistor 19 to the headphone amplifier 15. The headphone amplifier 15 receives the resistance of the signal from the microphone whose level has already been adjusted by the microphone volume 4.
Since it is input via 20, the tape playback signal and the signal from the microphone are mixed here and amplified by the headphone amplifier 15 and then connected via the resistor 21 to the headphone jack.
It is given to the L and R terminals of 13-2 and can be heard from headphones (not shown) connected to this jack. The volume of the tape reproduction signal at this time is the volume volume 9 '.
Further, the volume of the signal from the microphone can be arbitrarily adjusted by the microphone volume 4.

The signal from the microphone at the middle terminal of the volume control 9'is sufficiently attenuated by the resistor 19, and the speaker 14
It is not mixed in the loud output of.

In the above description, the case where both the accompaniment sound and the audio sound exist for the tape reproduction sound has been described, but it is also possible to use only the accompaniment sound. The switching of the insertion of the headphone plug into the headphone jack has been described, but this may be provided with another switch that is not interlocked with the insertion.

Although the karaoke device using an audio tape has been described, the same can be applied to a karaoke device using a record, a video tape, or a video disc as a reproduction medium.

As described above, according to the present invention, in a normal state, the sound signal of the microphone and the reproduction signal of the reproduction medium are mixed at an arbitrary ratio, amplified and amplified by the speaker, and the headphone is inserted. , The operation of the changeover switch or the operation of the interlock changeover switch by inserting headphones mixes the audio signal of the microphone and the reproduction signal of the reproduction medium at an arbitrary ratio, amplifies and listens to the headphones, and reproduces the reproduction medium from the speaker. With the function that only the sound is amplified and amplified at a fixed volume, the same operation as conventional karaoke can be performed in the normal state, and in the state where the headphones are used, the changeover switch is used to switch from the headphones. Is a karaoke system in which the playback sound from the playback medium and the loud sound of the microphone sung by the user are mixed at an arbitrary ratio. As well as enjoying it as well as listening to only the playback sound from the playback medium at a constant volume from the speaker at the same time, the live voice of the singing person will not be heard by others, and the accompaniment of the song and pre-recording Since the singing voice sound is also output from the speaker, it feels as if you are listening to TV or radio without giving an unnatural or humorous feeling to the people around you. Things are not loud enough to be audible through the microphone, so it is not necessary to increase the sound multiple sound from the speaker to hide it, so a relatively small sound is required as a whole, which annoys neighbors. It is possible to realize an excellent karaoke device that can obtain the effect of being rare, and it is extremely effective.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a karaoke device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional karaoke device. 1 ... Microphone jack, 2 ... Microphone amplifier, 5 ... Accompaniment signal reproducing head, 5 '... Singing voice signal reproducing head,
6,6 '... preamplifier, 7 ... voice multiplex balance volume, 9' ... volume control, 10 ... microphone / tape mixing amplifier, 12 ... power amplifier, 13-2 ... headphone jack, 14 ... speaker, 15 …… Headphone amplifier, 16 …… Resistance.

Claims (2)

(57) [Claims] 1. A reproduction amplification means for reproducing a reproduction medium, and a microphone amplification means for amplifying a microphone input signal.
First level adjusting means for receiving the output of the microphone amplifying means and adjusting the output level, headphone amplifying means for obtaining a headphone output, output amplifying means for amplifying an output signal output to a speaker output terminal, and the output Second level adjusting means capable of adjusting the output of the amplifying means and switching means for switching the output circuit between the first state and the second state are provided, and in the first state of the switching means, the reproduction is performed. The output of the amplifying means and the adjusted output of the first level adjusting means are mixed and output from the second level adjusting means to the output amplifying means. On the other hand, in the second state, the reproduction is performed. Only the output of the amplifying means is output to the output amplifying means, and only the output of the reproducing amplifying means at this time is applied to the second level adjusting means. Karaoke apparatus which mixes the output of the the force first level adjusting means, characterized by being configured to output to the headphone amplifier means. 2. The karaoke according to claim 1, wherein the switching means is configured to switch from the first state to the second state in conjunction with connection of headphones to the headphone output. apparatus.