JPH0546070A - Karaoke device - Google Patents

Abstract

PURPOSE:To provide a KARAOKE (orchestration without lyrics) device which can be used to practice singing, as well regardless of multiple sound input while suppressing the cost by using one key controller. CONSTITUTION:A detecting means 44 outputs a detection signal only when a song and an accompaniment are inputted to a 2nd right channel 26 and a 2nd left channel. A switching means SW6 outputs the input of a 1st right channel 22, the input of a 1st left channel, or their mixture when the detection signal is outputted, and outputs the input of the 2nd left channel 24 unless the detection signal is outputted. Consequently, only the accompaniment is outputted from the side of the 2nd left channel 24. A key controller 28 controls the keys of the output of the switching means SW6 and the output of the 2nd right channel 26. Consequently, the keys of the song and accompaniment can be varied. Therefore, only the accompaniment which is varied in key can be outputted from a speaker 32 and the song or song and accompaniment which are varied in key can be outputted from headphones 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a karaoke machine, and more particularly to a key controller for the karaoke machine.

[0002]

2. Description of the Related Art Recently, in addition to the use of music tapes (hereinafter referred to as tapes) and compact discs (hereinafter referred to as CDs), laser discs (hereinafter referred to as LDs) are often used as sound source media for karaoke devices. There is. In this case, the singer sings while watching the lyrics displayed on the screen in accordance with the accompaniment played from the speaker of the karaoke device. Also, in order to practice singing, he sometimes sings while listening to a model song and accompaniment with headphones.

When the karaoke device is used for practicing a song, for example, voice multiplex recording of a song and an accompaniment (hereinafter,
Otota) Use software as a medium. Especially in the LD, the normal karaoke accompaniment uses a stereo digitally recorded one, and for practicing a song, etc., a four-channel system in which a song and an accompaniment are recorded in polyphonic analog. Is becoming In this case, a digitally recorded accompaniment can be played from a speaker, and a song or an accompaniment can be sung in accordance with it while listening to the headphones.

FIG. 4 shows a conventional karaoke apparatus. Digitally recorded accompaniment is input to channels 2 and 4. Analogly recorded songs and accompaniments are input to channels 6 and 8. When the accompaniment and the singer's "key" do not match, the key controllers 10 and 12 can change from natural to upper and lower chromatic scales. The key controller 10 changes the "key" of the accompaniment. The key controller 12 changes the “key” of a song or accompaniment. Also, if the accompaniment and practice songs and the “key” of the accompaniment do not match, the singer is difficult to sing, so the key controllers 10 and 12 are variable in conjunction.

[0005]

However, the above-mentioned conventional karaoke apparatus has the following problems.

The karaoke apparatus of FIG. 4 has a problem that the cost is high because two key controllers are required.

Therefore, it is necessary to make the key controller one system. In this case, it is possible to make one system by controlling the "key" using only the inputs of channels 6 and 8. However, a song and accompaniment may be input to both channels 6 and 8. In this case, since the song and the accompaniment are simultaneously output from the speaker 14, the song of the channel 6 is not output, but only the accompaniment is output from the speaker 14, and the song and the accompaniment of the channel 8 are output to the headphone 16.
There was a problem that I had to make it output from.

The present invention solves the above problems and provides a karaoke apparatus which can be used for practicing a song regardless of the input while suppressing the cost by using one key controller. The purpose is to

[0009]

A karaoke apparatus according to claim 1, wherein an accompaniment is input, a first right channel input and a first left channel input, a song, an accompaniment, or a song and an accompaniment are input. , Second right channel input and second
In the karaoke apparatus provided with the left channel input, the detection means outputs the detection signal only when the song and the accompaniment are input to both the second right channel and the second left channel, and the detection signal is output. In the case where the detection signal is not output, the input of the first right channel, the input of the first left channel, or a mixture of both are output, and when the detection signal is not output, the input of the second left channel is output. A switching means for outputting, and a key controller for controlling the keys of the output of the switching means and the output of the second right channel are provided.

[0010]

In the karaoke apparatus according to the present invention, the detection means outputs the detection signal only when the song and the accompaniment are input to both the second right channel and the second left channel. When the detection signal is output, the switching means outputs the input of the first right channel, the input of the first left channel, or a mixture of both, and
When the detection signal is not output, the input of the second left channel is output. As a result, only the accompaniment is output from the second left channel side. The key controller controls the keys of the output of the switching means and the output of the second right channel. This changes the keys of the song and accompaniment.

[0011]

1 is a circuit diagram of a karaoke apparatus according to an embodiment of the present invention. This karaoke device includes a left channel 20 which is a first left channel input, a right channel 22 which is a first right channel input, a left channel 24 which is a second left channel input, and a right channel which is a second right channel input. A 4-channel LD of channel 26 is used.

The key controller 28 uses the left channel 2
4, a song that is a multi-tone signal output from the right channel 26,
The accompaniment, singing, and accompaniment “key” can be changed from natural to upper and lower chromatic scales. The switches SW1 to SW6 switch circuits corresponding to the respective buttons of the switch panel 30. The detection circuit 32 includes a left channel 24 and a right channel 26.
In order to detect the polyphonic signal output from the bandpass filter (BPF) 36, the subtractor 38, the voltage comparator 40,
It is composed of a reset flip-flop 42. The operation of this circuit will be described below.

Now, when the singer sings, it is necessary to output the accompaniment from the speaker 32 and the model song and the accompaniment from the headphones 34. In this case, first, the polyphonic button on the switch panel 30 is pressed. This allows the SW
1 is connected to the 2 side.

Next, the left channel 24 and the right channel 26
It detects what kind of input is being made. Currently, there are the following four types of karaoke tone software.

Left channel 24 accompaniment, right channel 26
The song and accompaniment are recorded in.

Left channel 24 accompaniment, right channel 26
The song is recorded in.

Songs and accompaniment are recorded in stereo on both channels.

Songs and accompaniment are recorded in monaural on both channels.

The detection circuit detects whether a song and an accompaniment are input to both channels ,.

The normal range of the singer is 80 Hz to 140
Since it is in the range of 0 Hz, the BPF 36 allows only signals in this band to pass. Next, the subtracter 38 subtracts the two channels. In Figure 2, when
The state of the signal output from the subtractor is shown. FIG. 3 shows an example of actual subtractor output data. In FIG. 2, the signal of "the opposite phase of the accompaniment of both channels" is output,
Since the accompaniment level of the “song part” S is extremely low as shown in FIG. 3, the “inverse phase component of the accompaniment of both channels” may be regarded as 0.

As a result, when the song and the accompaniment are input, no signal is output to the voltage comparator 40. If it is a certain level or higher, it is determined that the signal is other than this. This signal becomes a control signal for SW6 via the reset flip-flop 42. When a song and accompaniment are input to both channels, the left channel 20, right channel 22,
Alternatively, it is connected to a mixture of both channels and an accompaniment is output. In other cases, since the accompaniment is output by, the left channel 24 is output as it is. Therefore, the output of SW6 is to output only the accompaniment regardless of the input.

Next, for example, assuming that the singer's "key" is chromatically higher than natural, press # 1 on the switch panel 30. As a result, the output of the accompaniment on the left channel 24 side and the output of the song or the song and the accompaniment on the right channel 26 are both connected to the 2 side of SW2 and set to the "key" which is a semitone higher than natural by the key controller 28. To be done. When connected to the 1 side of SW2, the right channel 20 and the left channel 22 are output, and the speaker 3
2. The headphone 34 outputs a digitally recorded accompaniment.

Next, the output of the accompaniment output from the key controller 28 passes through the signal line 46, is connected to the second side of SW4, and is output from the speaker 32. The output of the song or the song and the accompaniment passes through the signal line 48, but is output from the headphone 34 because it is switched to the 2 side of SW4.

As described above, as for the output of the SW 6, only the accompaniment is output regardless of the input, and the right channel 26 outputs the song or the song and the accompaniment. The key controller 28 controls the output of the SW 6 and the output of the right channel 26 to change the “key” of the song and accompaniment. As a result, only the accompaniment with the changed “key” is output from the speaker 32, and the “key” is output from the headphones 34.
It is possible to output a song or a song and an accompaniment in which is changed. Therefore, the karaoke apparatus of FIG. 1 reduces costs by using one key controller,
Only the accompaniment can be output to the speaker 32 regardless of the input.

According to the user's preference, the accompaniment, song, and accompaniment / song buttons of the switch panel 30 are used to output only the song, only the accompaniment, or a mixture of the song and the accompaniment through the speaker 32 or the headphones 34. You can also do it.

Further, although the LD is used in this embodiment, a tape or a CD may be used together.

[0027]

According to the karaoke apparatus of the first aspect, the detecting means has both the second right channel and the second left channel.
The detection signal is output only when a song and accompaniment are input. The switching means, when the detection signal is output,
The input of the first right channel, the input of the first left channel, or a mixture of both are output, and when the detection signal is not output, the input of the second left channel is output. As a result, only the accompaniment is output from the second left channel side. The key controller is
It controls the keys of the output of the switching means and the output of the second right channel. This allows the keys of the song and accompaniment to be changed. Therefore, only the accompaniment with the changed key can be output from the speaker, and the song or the song and accompaniment with the changed key can be output from the headphones. Therefore, the cost can be suppressed by using one key controller, and it can be used for practicing songs regardless of input.

[Brief description of drawings]

FIG. 1 shows a circuit diagram of a karaoke apparatus according to an embodiment of the present invention.

FIG. 2 shows a state of an output signal of a subtractor.

FIG. 3 shows an example of output data of a subtractor.

FIG. 4 shows a circuit diagram of a conventional karaoke apparatus.

[Explanation of symbols]

 20-26 ... Channel 28 ... Key controller 30 ... Switch panel 32 ... Speaker 34 ... Headphones 36 ... Band pass filter 38 ... Subtractor 40 ... Voltage comparator 42 ... Reset flip-flops

[Procedure amendment]

[Submission date] June 18, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] 20 to 26 ... Channel 28 ... Key Controller 30 ... Switch Panel 32 ... Speaker 34 ... Headphones 36 ... Bandpass Filter 38 ... Subtractor 40 ...・ Voltage comparator 42 ・ ・ ・ Reset flip-flop

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyoshi Ito 2-7-18 Shibata, Kita-ku, Osaka, Toshiba Toshiba Corporation

Claims (1)

[Claims] 1. A first right channel input and a first left channel input to which an accompaniment is input, a song, an accompaniment, or a second right channel input and a second left channel to which a song and an accompaniment are input. In a karaoke device having an input, both the second right channel and the second left channel,
A detection means that outputs a detection signal only when a song and an accompaniment are input, and when a detection signal is output, the input of the first right channel or the input of the first left channel, or both are mixed. A switching means for outputting the second left channel input when the detection signal is not output, and a key controller for controlling the keys of the output of the switching means and the output of the second right channel. Karaoke equipment.