JPH0316139Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a karaoke device.

Conventionally, there has been a karaoke machine as shown in FIG.

In the figure, 1 is a karaoke music tape, 2
is a playback head, 3 is a playback preamplifier, 4 is a volume for adjusting the tape playback volume, 5 is a microphone, 6 is a playback preamplifier, and 7
is the volume for adjusting the microphone playback volume,
8 is a circuit for mixing tape playback sound and microphone playback sound, 9 is a main amplifier, and 10 is a speaker.

Next, the operation will be explained.

The music information converted from a magnetic signal to an electric signal by the reproduction head 2 is amplified by the reproduction preamplifier 3 and restored to regular music information, and then the music signal is adjusted to an appropriate volume by the volume 4. .

On the other hand, the audio information converted into an electrical signal by the microphone 5 is amplified by the reproduction preamplifier 6, and then the audio signal is adjusted to a suitable volume by the volume 7.

Then, the music signal and the audio signal are mixed in the mixing circuit 8, and after power amplification is performed in the main amplifier 9, the speaker 10 is driven to output a karaoke song.

However, because conventional karaoke equipment was configured in this way, if the singer mistakenly started singing in the middle of the prelude or interlude, the microphone playback sound of the song would be mixed in and output from the speaker, causing the singer to It had the disadvantage of making me feel embarrassed.

The purpose of the present invention is to overcome the drawbacks of the above-mentioned conventional techniques, so that even if you accidentally start singing during the prelude or interlude,
To provide an improved karaoke device which cuts the reproduced sound from a microphone and does not output it from a speaker.

Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIG. 2 is a block diagram of a karaoke apparatus according to an embodiment of the present invention.

What is important in the diagram is that the playback preamplifier 3
A circuit 11 for identifying a music signal from a music signal is provided, and a signal control transistor 12 is provided for switching based on the output of this identification circuit 11.
The signal control transistor 12 is configured to short-circuit the output of the reproduction preamplifier 6.

With this configuration, even if you accidentally start singing during the prelude or interlude, the identification circuit 11 will detect a special signal recorded on the karaoke tape 1 or a separate track. The original singer's voice matched to a certain melody is identified and detected, and the output turns on the signal control transistor 12, so that the microphone reproduced sound is cut off and is not output from the speaker 10.

If the identification circuit 11 is set to allow manual operation, it is possible to select whether the manual is turned on for conventional microphone playback or the manual is turned off for the effect of the present invention.

For example, make an announcement with the manual ON and sing at karaoke with the manual OFF.

Furthermore, if a flip-flop is used in place of the signal control transistor 12, it is possible to repeatedly set and reset the microphone playback sound (short circuit → not output from the speaker), so for example, at the start of a prelude or interlude, the microphone playback signal can be short-circuited. , it is also possible to switch so that the microphone playback sound is played to the speaker 10 at the end of the process.

Incidentally, when using a digitally processed karaoke source such as a video disc or a compact disc instead of tape 1, the identification signal may be input to an empty track.

Alternatively, standby may be indicated on a display or the like without cutting off the microphone playback sound.

As explained above, according to the present invention, even if you accidentally start singing during the prelude or interlude, the microphone playback sound will not be output from the speaker, so you can rest assured without feeling embarrassed like in the past. I can sing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional karaoke apparatus, and FIG. 2 is a block diagram of a karaoke apparatus according to an embodiment of the present invention. 1...Karaoke tape, 5...Microphone, 8...Mixing circuit, 10...Speaker,
11...Identification circuit, 12...Signal control transistor.

Claims (1)

[Scope of utility model registration request] A means for mixing and outputting a music signal from a karaoke information source and an audio signal from a microphone, and identifying whether the music signal is an audio signal through a bandpass filter through which an audio band passes, or a prelude or interlude signal. 1. A karaoke apparatus, comprising: identification means for identifying whether the area is in the prelude or interlude signal area; and switching means for short-circuiting the output of the audio signal in the prelude or interlude signal area based on the output from the identification means.