JPH0585977B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a microphone mixing device in a karaoke apparatus such as a karaoke tape recorder having a microphone input.

Conventional configuration and its problems Recently, there are several types of karaoke tape recorders on the market.
Tapes (hereinafter referred to as audio multiplex karaoke tapes) have appeared in which the singer's voice is recorded on one channel and accompaniment music is recorded on the other channel. By using this audio multiplex karaoke tape, you can listen to the accompaniment on one channel while simultaneously listening to the singer's voice recorded on the other channel, and there is an advantage that you can easily practice new songs. Furthermore, using the stereo playback head, a stereo balance volume or a switch for selecting the playback sound of both channels is provided, and the balance volume or the switch for selecting either channel can be set to the one on which the accompaniment music is recorded. A karaoke tape recorder has been introduced and is rapidly becoming popular, allowing users to enjoy playing back only the accompaniment music on one channel, and only the singer's voice on the other channel.

There are also audio multiplex karaoke tapes exclusively for duets in which the voices of male and female singers are alternately recorded as the voices of the singers on one channel. For example, in such a tape, a male user inputs his voice into the microphone and sings with the male singer when the male singer's voice is being played, and when the female singer's voice is played, the user inputs his voice into the microphone and sings with the male singer. It is possible to enjoy a duet as if listening to the sound.

However, with conventional karaoke tape recorders, the male singer's playback sound and the sound from your own microphone are mixed and played back, so you take the place of the male singer and alternately record the female singer's sound. I can't enjoy duets. Also, at this time, the aforementioned balance volume and changeover switch are used, for example, to lower the output of the audio side channel only when a male singer's voice is heard, and during that time the output of the audio side is raised again while the voice of the female singer is played. Singing in this manner allows for completely alternating duets, but it is very inconvenient for the singer or for the other person operating the karaoke tape recorder.

On the other hand, as proposed by the present applicant in Utility Model Application No. 59-32812, only when audio is input from the microphone, the playback sound of the channel on which the singer's voice of the audio multiplex karaoke tape is recorded is automatically played. There is a method of applying mutating to. As shown in FIG. 1, audio input from a microphone 1 is amplified by a microphone amplifier 3, and part of its output is rectified by a rectifier circuit 4 and converted into a DC signal. On the other hand, the output of the head 6 that reproduces the singer's audio channel is amplified by the amplifier 8, and the muting transistor 9 provided on this output side is controlled by the DC signal, and this is done only when the signal is input from the microphone 1. Due to the operation of the muting transistor 9, the channel output of the singer's singing voice is muted, so that the voice of the microphone 1 and the accompaniment music reproduced via the head 5 and the amplifiers 7 and 11 are mixed and reproduced from the speaker 14. It is composed of

In this configuration, when a male singer's voice is played using a multiplexed karaoke tape for duets, if a male user sings, the male singer's voice will be muted, his own voice will be output, and he will finish singing. Since the voice input to the microphone disappears, muting is canceled, the female singer's voice is played back, and a duet is automatically performed in which the female singer sings alternately with the female singer.

However, this method had a problem in that a male user could not mix the voice with the female singer's voice during a duet.

Purpose of the Invention The present invention provides a microphone mixing device that inputs one's own voice from a microphone to a karaoke device and makes it possible to cancel muting as necessary even when muting is being applied to the singer's voice. The purpose is to

Structure of the Invention The present invention has a first channel in which a singer's voice is recorded and a second channel in which the accompaniment of the singer is recorded, and it is possible to mix a signal input from a microphone with the playback signals of these channels. In the constructed karaoke playback device, muting is performed on the voice output of the singer included in the first channel by an operation command signal from a switch provided on the microphone body or another unit, or a switch provided on the karaoke playback device body. This configuration is configured to switch the mixing by turning on and off the operation of the circuit.

DESCRIPTION OF EMBODIMENTS FIG. 2 shows a configuration diagram of an embodiment of the present invention. Note that the same components as in FIG. 1 are given the same numbers. Reference numeral 16 is an audio multiplexed karaoke tape in which a singer's singing voice is recorded on one channel, and accompaniment music is recorded on the other channel. 5 is an accompaniment music playback head, 6 is a singing voice playback head, and 7 and 8 are respective amplifiers. 9 is the above-mentioned muting transistor, and 10 is a volume for adjusting the balance of reproduction output. After mixing, the reproduction outputs of the two channels are amplified by an amplifier, further mixed with the output of the microphone amplifier 3, and outputted from the speaker 14 via the volume 12 and the amplifier 13. Further, the signal detected at the output side of the microphone amplifier 3 is rectified by the rectifier circuit 4 to become a DC signal and is inputted to the base of the muting transistor 9 via the switch 15.

In the above configuration, when the switch 15 is turned on (closed), muting is applied to the singer's audio output only when audio is input from the microphone, as in the first case. On the other hand, when the switch 15 is turned off (opened), the muting transistor 9 is turned off and the singer's voice is output from the speaker 14 without being muted by the reproduction head 6.

3 to 5 are main part configuration diagrams showing other embodiments of this switch. In FIG. 3, the microphone 1 is provided with a switch 24 in addition to the usual switch 23 for turning on and off the audio signal, the microphone plug is for stereo use, and the tape recorder side also has a microphone jack 2 for stereo use. ′ is provided.

In the configuration shown in FIG. 3, the audio signal from the microphone is passed from the contact 18 of the microphone plug to the contact 21 of the jack 2' to the microphone amplifier 3.
is input to. On the other hand, when the switch 24 is turned on, the microphone plug contact 19 and the ground side contact 17
Make sure that it is shot. Therefore, when the microphone plug is inserted into the microphone jack 2', contact 19 connects to contact 2 in the jack 2'.
2 and the contact 17 comes into contact with the ground contact 20 in the jack 2', making it possible to arbitrarily turn on and off between the contact 22 and the ground contact 20 using the switch 24 attached to the microphone 1. The contact 22 is the muting transistor 9
Because it is connected to the base of the microphone, the muting drive signal output from the microphone signal rectifier circuit 4 to this base can be arbitrarily grounded or released.In other words, the muting operation can be turned on or off by the microphone. This can be done using a switch 24 attached to the switch 24.

In FIG. 4, the output signal of a switch 24 that turns on and off the muting transistor 9 is guided to a plug 26 provided separately from the audio signal output plug 25 of the microphone, and a jack 27 for the plug 26 is also provided on the tape recorder side. It is something.

In Fig. 5, there is a switch unit (for example, a foot-operated type) in addition to the microphone 1.
is provided and is input to the jack 27.

Note that the switches 15, 24, 28 in the above embodiments
A lock type switch may be used, or a non-lock type switch may be used to enable quick operation.

Further, the switch 15 may of course be provided on the main body of the tape recorder, and although these switches have been explained using a so-called wired remote control method, the tape recorder side receives a switching signal using a high frequency signal, an optical signal, etc. Of course, a wireless remote control system may be used.

Furthermore, in the above, one transistor 9 is used as a muting circuit to control its base, but this may be any other circuit, and the mutating control can also be done in exactly the same way, for example, by turning on and off the power supply line of the amplifier 8. Effects can be obtained.

Effects of the Invention According to the microphone mixing device of the present invention, the singer's voice recorded in the first channel is muted by the output signal from the microphone during microphone mixing, and the muting state is arbitrarily canceled by a switch. With this configuration, you can output your own voice instead of the singer's voice, or output your own voice mixed with the singer's voice by operating a switch, making it possible to perform duets, etc. can enhance the effect of the song. Furthermore, by inputting the sound of another instrument, etc. from a microphone or its input terminal, it is possible to mix the sound of this instrument with the singer's voice or output only the sound of the instrument, and it can also be combined with the recording function. You can create your own tapes by editing the aforementioned duets and mixing with instruments. It is also very effective to practice by singing along with the singer's voice or by yourself, and can be used for duets, editing, singing practice, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the technique of the prior application, FIG. 2 is a block diagram of one embodiment of the present invention, and FIGS. 3 to 5 are block diagrams of main parts of other embodiments. 1... Microphone, 3... Microphone amplifier, 4... Rectifier circuit, 6... Playback head, 7,
8... Amplifier, 9... Transistor for mutating, 15... Switch, 16... Audio multiplexing karaoke tape, 17... Ground contact, 18,1
9...Contact, 24...Switch, 26...Plug, 27...Jack, 28...Switch unit.

Claims (1)

[Claims] 1. In a karaoke playback device that has a first channel in which the singer's voice is recorded and a second channel in which the accompaniment of the singer is recorded, and is configured to be able to mix a signal input from a microphone with the playback signals of those channels. , a regenerative amplifier that amplifies the signals recorded on the first and second channels, a microphone amplifier that amplifies the audio signal input from the microphone, and an output of the regenerative amplifier that outputs the signal amplified by the microphone amplifier. a mixing means for mixing the signal; and a muting circuit for mutating the voice output of the singer included in the first channel using the detected output of the amplified signal from the microphone amplifier, A microphone mixing device characterized in that it is configured to switch the mixing by turning on and off the operation of the muting circuit in response to an operation command signal from a switch provided in the karaoke playback device or a switch provided in the main body of the karaoke playback device.