JPH0316138Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a karaoke device that allows the user to sing along to a melody played from a recording medium such as a karaoke tape, video disk, or compact disk.

[Conventional technology]

The construction of a conventional karaoke apparatus of this type is shown in a block diagram in FIG.

In Figure 1, 1 is a karaoke tape, 2 is a melody playback head, 3 is a preamplifier, 4 is a volume, 5 is a singing voice playback head, 6 is a preamplifier,
7 is a volume, 8 is a microphone, 9 is a preamplifier, 10 is a volume, 11 is a mixing circuit, 12 is a main amplifier, and 13 is a speaker.

First, the melody signal of karaoke tape 1 is
The melody reproduction head 2 and preamplifier 3 reproduce and amplify the melody, and the volume 4 adjusts the reproduction level.

The singing voice signal of the karaoke tape 1 is similarly reproduced and amplified by the singing voice reproduction head 5 and the preamplifier 6, and the reproduction level is adjusted by the volume 7.

Note that the singing voice reproduction signal is normally throttled down by volume 7 to such an extent that it is not output.

On the other hand, the singing voice signal (audio signal) from the microphone 8 is also amplified by the preamplifier 9, and the volume is 10.
The level is adjusted by .

These three signals are mixed by a mixing circuit 11, amplified by a main amplifier 12, and then output from a speaker 13.

[The problem that the idea aims to solve]

Since the conventional karaoke device is configured as described above, it is possible to sing along with the tempo of the melody.

However, if the tempo of the melody reproduction signal deviates from the tempo of the melody reproduction signal at the beginning or in the middle of the song, the melody reproduction signal advances or lags rapidly, making it difficult for the singer to sing in accordance with the tempo of the melody.

This invention was made in order to eliminate the above-mentioned inconveniences, and provides a karaoke device that allows the user to easily sing along to the tempo of a melody reproduced from a recording medium at the beginning or in the middle of a song. It is something.

[Means to solve the problem]

The karaoke device according to this invention compares the tempo of the singing voice reproduction signal and the singing voice signal from the microphone between the preamplifier that amplifies and outputs the singing voice reproduction signal reproduced from the recording medium and the volume that adjusts the reproduction level, If there is a difference in tempo, the singing voice reproduction signal is output to the volume, and if there is no difference in tempo, means is provided for not outputting the singing voice reproduction signal to the volume.

[Effect]

The karaoke device in this invention compares the difference in tempo between the singing voice reproduction signal reproduced from the recording medium and the singing voice signal from the microphone, and if there is a difference in tempo, outputs the singing voice reproduction signal, and if there is no difference in tempo, Cuts the singing voice playback signal.

〔Example〕

Hereinafter, an embodiment of this invention will be described based on the drawings.

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

What is important in Fig. 2 is that between the preamplifier 6 and volume 7, which amplify the singing voice signal played back from karaoke tape 1, the signals from karaoke tape 1 and microphone 8 are compared, and the difference in tempo is detected. If so, the singing voice playback signal played from karaoke tape 1 is output to volume 7, and if there is no difference in tempo, the singing voice playback signal played from karaoke tape 1 is not output to volume 7. be.

In FIG. 2, reference numeral 14 indicates a singing voice channel signal generator, which outputs an "H" level signal when it detects a singing voice reproduction signal reproduced from the karaoke tape 1, and outputs an "L" level signal when no singing voice reproduction signal is detected. It outputs a level signal.

15 indicates a singing voice signal generator, and a microphone 8
When a singing voice signal is detected, it outputs an "H" level signal, and when no singing voice signal is detected, it outputs an "L" level signal.

16 indicates a signal comparator, and each signal generator 14,
It detects the rising portion of each of the 15 output signals and outputs an "H" level output signal corresponding to the difference in rising time.

Reference numeral 17 denotes a singing voice control circuit, which outputs a singing voice reproduction signal reproduced from the karaoke tape 1 in response to the output signal from the signal comparator 16, that is, in response to an "H" level output signal.

Next, the operation will be explained using waveform diagrams showing output signals of each part in FIGS. 3A to 3E.

Assume now that the output signal of the preamplifier 6 that amplifies the singing voice reproduction signal reproduced from the karaoke tape 1 and the output of the preamplifier 9 that amplifies the singing voice signal from the microphone 8 are as shown in FIGS. 3A and 3B, respectively.

That is, in part a, the microphone 8 starts singing too early, in parts b and d, the microphone 8 starts singing too late, and in part c, the microphone 8 starts singing too soon.
The beginning of the song fits perfectly.

At this time, the output signals of each signal generator 14 and 15 are as shown in FIG. 3C and D.

Therefore, the output signal of the signal comparator 16 is
As shown in Figure E, the singing voice control circuit 17 receives the output signal of the signal comparator 16 (“H” level output signal).
In response to this, a signal as shown in FIG. 3F (singing voice reproduction signal reproduced from karaoke tape 1) is output.

As a result, when the tempos of the singing voice reproduction signal and the singing voice signal do not match, the singing voice reproduction signal reproduced from the karaoke tape 1 is outputted from the speaker 13 via the volume 7, the mixing circuit 11, and the main amplifier 12. , the singer is speaker 1
Regenerated singing voice output from 3 (singing voice reproduction signal)
You can listen to it and sing along to the melody.

Note that the singing voice control circuit 17 is provided with a changeover switch to continuously reproduce and output the singing voice reproduction signal.
It may be possible to manually switch between cutting the singing voice reproduction signal and reproducing and outputting the singing voice reproduction signal only when the tempo is out (corresponding to the embodiment described above).

It goes without saying that the present invention can also be applied to karaoke apparatuses that use video disks or compact disks in addition to the karaoke tape 1 as recording media.

Furthermore, even in a stereo playback device such as a stereo radio cassette with a microphone mixing function, as shown in FIG. It is possible to obtain the same effect as in the embodiment described above.

[Effect of idea]

As described above, according to this invention, when the tempo of the singing voice reproduction signal reproduced from the recording medium and the singing voice signal from the microphone do not match, the singing voice reproduction signal is output. By listening to the reproduced singing voice, the singer can easily sing in accordance with the tempo of the melody.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional karaoke device, FIG. 2 is a block diagram showing the configuration of a karaoke device according to an embodiment of this invention, and FIGS. 3 A to F
4 is a waveform diagram for explaining the operation of a karaoke apparatus according to one embodiment of this invention, and FIG. 4 is a block diagram showing the configuration of a karaoke apparatus according to another embodiment of this invention. 5... Singing voice reproduction head, 6, 9... Preamplifier, 7... Volume, 8... Microphone, 1
4... Singing voice channel signal generator, 15... Singing voice signal generator, 16... Signal comparator, 17... Singing voice control circuit.

Claims (1)

[Claims for Utility Model Registration] A karaoke device that mixes and outputs three signals: a melody playback signal and a singing voice playback signal reproduced from a recording medium, and a singing voice signal from a microphone, which amplifies and outputs the singing voice playback signal. between the preamplifier to be used and the volume to adjust the playback level.
Compare the tempos of the singing voice reproduction signal and the singing voice signal, and if there is a difference in the tempo, output the singing voice reproduction signal to the volume, and if there is no difference in the tempo, output the singing voice reproduction signal to the volume. A karaoke device characterized by having a means for preventing