JPS60247806A - Tape recorder with microphone mixing function - Google Patents

Abstract

PURPOSE:To improve the function of ''KARAOKE'' (recorded orchestra accompaniment), by constituting a tape recorder used for this purpose in such a way that muting is applied only to the reproduced output of the channel at the singer's voice side of a tape for sound multiplex ''KARAOKE'' when sound outputs from a microphone exist and the muting operation is switched by means of a switch. CONSTITUTION:The tape recorder of this invention is composed of a reproducing head 5 of background music, reproducing head 6 of singing voices, amplifiers 7 and 8, transistor 9 for muting, and volume 10 for adjusting balance of reproduced output. Reproduced outputs of two channels are amplified by the amplifiers 7 and 8 after mixing and further mixed with the output of an amplifier 3 for microphone. The mixed outputs are outputted through a loudspeaker 14 through a volume 12 and amplifier 13. The output of the microphone 3 is rectified by a rectifier circuit 4 and becomes a DC signal. The DC signal is inputted in the base of the transistor 9 for muting through a switch 15. Therefore, when the switch 15 is turned on, muting is applied to the voice output of a singer only when sounds are fed from a microphone.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improving the mixing function of a tape recorder with a microphone mixing function (hereinafter referred to as a karaoke tape recorder).

Conventional configuration and its problems Recently, there has been a tape on the market for karaoke tape recorders, in which the singer's voice is recorded on one channel and accompaniment music is recorded on the other channel (hereinafter referred to as audio multiplex karaoke tape). It has appeared. By using this audio multiplexed karaoke tape, you can listen to the accompaniment on one channel while simultaneously listening to the singer's voice recorded on the other channel, which has the advantage of making it easy to practice new songs. Furthermore, using a stereo playback head, a stereo balance volume or a switch for selecting the playback sound of both channels is provided, and the balance volume can be turned or the switch for selecting either channel can be adjusted depending on whichever accompaniment music is recorded. A karaoke tape recorder that allows you to enjoy playing back only the accompaniment music by switching to one channel and only the singer's voice by switching to the other channel has been introduced and is rapidly becoming popular.

There is also an audio multiplex karaoke tape exclusively for De Unit in which the voices of male and female singers are alternately recorded as the voices of the singers on one channel. In such a tape, for example, a male user inputs his voice into the microphone at the point where the male singer's voice is played and sings along with the male singer.

At a female singer's place, it is possible to enjoy a duet by listening to the female singer's playback without singing.

However, with conventional tape recorders, the male singer's playback sound and the audio from your own microphone are mixed together, so you can hear the female singer's voice being recorded alternately with the male singer's voice. I can't enjoy duets. At this time, you can also use the balance volume control and selector switch mentioned above to lower the output of the audio side Changi Lu only when a male singer's voice comes out, while you sing yourself, and raise the output of the audio side again to hear the female singer's voice. If you sing with full playback, it is possible to perform a completely alternating duet, but this is very inconvenient for the singer or for the other person operating the tape recorder.

On the other hand, as proposed by the present applicant in Utility Application No. 69-32812, only when all the voices have been input from the microphone, the playback sound of the channel on which the singer's voice is recorded on the audio multiplex karaoke tape is automatically played. There is a method to apply muting 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 all channels of the singer's audio side is amplified by the amplifier 8, and the muting transistor 9 provided on this output side is controlled by the DC signal, and only when a signal is input from the microphone 1. The operation of the muting transistor 9 mutes the channel output of the singer's singing voice, and the audio of the microphone 1 and the accompaniment music played through the head 6 and amplifier 7.11 are mixed and reproduced from the speaker 14. is configured to be

In this configuration, when a male singer's voice is played using a multiplexed karaoke tape for duets, if a user with a male voice sings, the male singer's voice is muted and his own voice is output, allowing him to sing himself. When the song is finished, there will be no more audio input to the microphone, so the muting will be canceled, the female singer's voice will be played back, and a duet will be automatically performed in which she and the female singer alternate.

However, this method has a problem in that a male user cannot sing by mixing the voice with a female singer's voice during a duet.

Purpose of the Invention The present invention provides a post-mixing system that inputs one's own voice from a microphone to a tape recorder, and makes it possible to cancel the muting as necessary even when the singer's voice is muted. The purpose is to realize a tape recorder.

Structure of the Invention The present invention mutes only the playback output of the singer's audio side channel of the audio multiplexed song tape when there is audio output from the microphone, and mutes the muting operation sound arbitrarily by operating the sound controller. It is configured so that it can be done.

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 the accompaniment music playback head, 6&''i singing voice playback head, 7 and 8 are respective amplifiers, 9 is the aforementioned muting transistor, and 1Q is a volume for adjusting the balance of the playback output. After mixing, the playback output of the channel is amplified by an amplifier, further mixed with the output of the microphone amplifier 3, and output from the speaker 14 via the volume 12 and amplifier 13.The output of the microphone amplifier 3 is also amplified by the rectifier circuit 4. The signal is rectified into a DC signal, which is input to the base of the muting transistor 90 via the switch 15en.

In the above configuration, when the switch 15 is turned on (closed),
Similar to FIG. 1, muting is applied to the singer's audio output only when audio is input from the microphone. On the other hand, when the switch 15 is turned off (opened), the muting transistor 9 is turned off, and the singer's voice produced by the playback head 6 is output from the speaker 14 without being muted.

FIGS. 3 to 5 are main part configuration diagrams showing other embodiments of this switch. In Figure 3, microphone 1
In addition to the usual switch 23 for turning on and off the audio signal, another switch 24 is installed, and a microphone plug is also installed for stereo use.

A stereo microphone jack 2' is also provided on the tape recorder side.

In the configuration shown in FIG. 3, the audio signal from the microphone is inputted to the microphone amplifier 3 via the contact 18 of the microphone plug and the contact 21 of the jack 2'. On the other hand, when the switch 24 is turned on, the contact 19 of the microphone plug and the ground side contact 17 are short-circuited. Therefore, connect the microphone plug to microphone jack 2.
', contact 19 connects to contact 22 in jack 2'.
The contact 17 contacts the ground contact 20 in the jack 2'.
By making contact with the microphone 1, it becomes 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. Since the contact 22 is connected to the base of the muting transistor 9, the muting drive signal outputted 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 and off using a switch 24 attached to the microphone.

FIG. 4 shows that the output signal of the switch 24 that turns on the muting transistor 9 is guided to a plug 26 provided separately from the audio signal output plug 26 of all microphones.
On the other hand, a jack 27 for a plug 26 is also provided on the tape recorder side.

In FIG. 6, a switch unit (for example, configured as a foot pedal type) is provided separately from the microphone 1, and input is made to the jack 27.

Note that the switches 15, 24, and 28 in the above embodiments may be locking type switches or non-locking type switches to enable quick operation.

Further, the switch 16 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, high frequency signals,
Of course, a wireless remote control system may be used in which a switching signal is received on the tape recorder side using an optical signal or the like.

Furthermore, in the above example, one transistor 9 is used as a muting circuit, and its base is controlled.
This may be done by using other circuits, and the same effect can be obtained by using muting control, for example, by turning the power line of the amplifier 8 on and off.

Effects of the Invention According to the present invention, the output signal from the microphone allows
This is because the singer's voice recorded on one channel is muted, and the muting state can be canceled arbitrarily using a switch.
By operating a switch, you can output your own voice in place of the singer's voice, or output your own voice mixed with the singer's voice, increasing the effectiveness of songs such as duets. Can be done. Furthermore, by inputting the sound of another instrument through the 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. You can create your own tapes by combining and 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.
It is very effective for editing, singing practice, etc.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram explaining the li 14'j of the earlier application;
The figure is a block diagram of one embodiment of the present invention, and FIGS. 3 to 6 are block diagrams of main parts of other embodiments. 1... Microphone, 3... Microphone amplifier, 4... Rectifier circuit, 6... Playback head, 7° 8... Amplifier, 9 ...muting transistor, 15-- switch,
16... Sound? Multi-M karaoke tape, 17...
...Ground contact, 18.19...Contact,
24...Switch, 26...Plug,...
27...Jack, 28...Switch unit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4

Claims (1)

[Claims] Playback with multiple channels that plays a tape in which the singer's voice is recorded on one channel and the performance of the song sung by the singer is recorded on the other channel.
an amplifier that amplifies the playback signal taken out from the playback head, a rectifier circuit that amplifies and rectifies the audio signal input from the microphone, and the output signal of the rectifier circuit that outputs the singer's voice from the tape. Muting time IM to mute the output of the channel being played? z, and receives a switching command signal by turning on or off a switch provided on the microphone body or another unit in order to give a command signal to turn on or off the operation of the muting circuit or the output of the rectifier circuit. A tape recorder with a microphone mixing function, characterized in that it has a terminal or a switch for switching commands on the tape recorder body.