JPH03293699A - Recorded orchestral accompaniment player - Google Patents

Abstract

PURPOSE:To easily sing with a correct interval by increasing the sound volume of a melody sound more and more as the quantity of deviation of the interval of a singer from the interval of the melody sound from a musical sound generation part and decreasing the sound volume more and more as the quantity of deviation is smaller and smaller. CONSTITUTION:The musical sound generation part 20 adjusts the sound volume of a melody sound voice signal S2 generated with melody sound data D2 inputted from a storage device 10 according to a melody sound volume control signal S7 from a CPU 32. Namely, as the interval of the singer deviates from the interval of the melody sound, the level of the melody sound voice signal S2 is increased and as the deviation of the interval is small, the level of the melody sound voice signal S2 is lowered. This automatic level adjustment is made in real time. Consequently, the singer can easily sing with the correct interval.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a karaoke apparatus used by a singer (karaoke user) to sing along with a performance output from a speaker.

[Prior Art] Conventionally, karaoke equipment uses an audio multiplexing method to
It is possible to switch between a state in which karaoke sound (sound corresponding to accompaniment) and melody sound (main melody corresponding to singing) are output at the same time, and a state in which melody sound is turned off and only karaoke sound is output. .

For singers who are not familiar with karaoke equipment or the melody of the song they are trying to sing, output the karaoke sound and melody sound at the same time, and sing while listening to the melody sound. If the melody
Some karaoke devices are used to mute the sound and output only the karaoke sound while singing.In some karaoke machines, when the singer's song is input from the microphone, the melody sound is automatically turned off and only the karaoke sound is output, and the melody sound is automatically output. Some have the function of reviving the melody sound when it runs out. In this case, even if the singer loses his/her own pitch and the song is interrupted for a moment, the melody sound is output, so the singer can continue singing with peace of mind.

Furthermore, in conventional karaoke devices, the volume of the karaoke sound and the volume of the melody sound can be adjusted independently, and the singer can adjust the karaoke sound and melody sound by operating the volume knob etc. You can also select the volume ratio according to your preference.

[Problem to be solved by the invention] However, the volume adjustment is manually set;
Also, needless to say, once set, the set volume level and volume ratio are fixed until the settings are reset. Therefore, if you are confident in your pitch and are singing with the melody turned off or set to a low default setting,
In the middle of the song, I lost confidence in the pitch of a part of the melody.
The reality is that even if you try to increase the volume of the melody sound immediately when you want to make the sound louder, you cannot do it in time because you have to do it manually.

Also, if you are not confident in the pitch of most of the song and are singing with the melody set to a high default setting, the part where you are confident in the pitch will come out in the middle of the song and it will not turn into a melody note. When I wanted to sing on my own, it was difficult to immediately reduce or turn off the melody sound by manual operation, and I was sometimes discouraged by the loud melody sound. .

[Object of the Invention] The present invention was made in order to solve the above-mentioned problems, and it is an object of the present invention to automatically adjust the volume of the melody tone according to the degree of deviation between the pitch of the singer and the pitch of the melody tone. The purpose is to make adjustments possible.

[Means for Solving the Problems] In order to achieve this object, the karaoke device of the present invention has the following features:
a storage device that stores performance data related to a plurality of songs;
a musical sound generating section that generates a karaoke sound audio signal and a melody sound audio signal based on the performance data input from the storage device; an output means for outputting a sound, an audio input means for outputting a singing audio signal based on the user's singing voice, a melody-sound audio signal input from the musical sound generation section and a singing audio signal input from the audio input means; a pitch detecting means for detecting the pitch deviation of the pitch detecting means; and a volume for changing the volume of the melody sound outputted by the output means to be large or small in accordance with the change in the pitch deviation amount detected by the pitch detecting means. and control means.

[Function] The karaoke device of the present invention having the above configuration compares the pitch of the singing audio signal by the singer and the pitch of the melody-sound audio signal generated by the musical tone generating section, and determines the amount of deviation between the pitches. The volume of the melody sound output by the output means is controlled to be increased as the amount of deviation becomes smaller, and the level of the melody sound audio signal is controlled to be reduced as the amount of deviation becomes smaller. This control is performed automatically and in real time.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a karaoke apparatus according to an embodiment of the present invention.

This karaoke device includes a music selection section 2, a volume setting section 4, a storage device 10, a musical tone generation section 2o, and a volume control section 3.
0, pitch detection means 4o, microphone 50, and mixer 60
, an amplifier 70, a speaker 80, and the like.

The storage device 10 stores performance data D of a large number of songs, and is, for example, a large-capacity magneto-optical disk,
Hard disks, optical disks, and compact discs (C
D) etc. are used. Performance data D includes karaoke sound data D1 and melody sound data D2.

The music selection unit 2 inputs the number of the music selected by the karaoke user, and when the CPU 32 accesses the storage device IO according to the music number, the performance data D of the music corresponding to the music number is retrieved from the storage device 10. is read out.

The musical sound generation unit 20 generates a karaoke sound audio signal S based on the karaoke sound data D1 in the performance data D while sequentially reading the performance data D of the song selected by the karaoke user from the storage device 10. With,
The melody-sound audio signal St is generated based on the melody-sound data D2. As this musical tone generating section 20, for example, a synthesizer is used.

The musical sound generation unit 20 has a terminal for outputting the generated karaoke sound audio signal S and the melody sound audio signal S2 to the mixer 60, and a terminal for outputting only the melody sound audio signal S2 to the pitch detection means 40. ing.

The volume setting unit 4 is capable of independently initializing the volume of the karaoke sound audio signals S and I and the volume of the melody sound audio signal S, and is configured to set the volume of the karaoke sound audio signals S and I and the volume of the melody sound audio signal S, and sets the karaoke sound volume given to the musical sound generation unit 20 via the CPU 32. The control signal S is configured to initially set the volume of the karaoke sound audio signal S1, and the melody volume control signal S is configured to initialize the volume of the melody sound audio signal St.

The mixer 60 mixes the singer's singing audio signal S input from the microphone 50 with the karaoke sound audio signal Sl and melody sound audio signal St from the musical sound generation section 20, and produces the mixed audio signal S4. is outputted to a speaker 80 via an amplifier 70.

The pitch detection means 40 includes a first frequency-voltage converter 41;
It consists of a second frequency-voltage converter 42 and comparison means 43. The input terminal of the first frequency-voltage converter 41 is connected to the microphone 50, and the input terminal of the first frequency-voltage converter 42 is connected to the microphone 50.
The input terminal of is connected to the output terminal of the melody-tone audio signal S2 in the musical tone generating section 20. The outputs of the frequency-to-voltage converters 41, 42 are led to comparison means 43.

The frequency-voltage converters 41 and 42 each convert the frequency (pitch) of the input audio signals Sz and Ss into a voltage proportional to the frequency (pitch). The comparison means 43 outputs a comparison output voltage signal S according to the difference between the two input voltages.

The volume control means 30 includes an A/D converter 31 and a CPU (microprocessor) 32. A/D
The converter 31 inputs the comparison output voltage signal S output from the comparison means 43, converts it into a digital signal, and sends it to the CPU.
32. The CPU 32 is configured to generate a melody-volume control signal S based on the digital signal and output it to the musical tone generation section 20.

Note that the CPU 32 does not generate the karaoke volume control signal S depending on the signal from the A/D converter 31.

Next, the operation of the karaoke apparatus of this embodiment will be explained.

When the karaoke user individually initializes the volume of the karaoke sound and the volume of the melody sound by manual operation in the volume setting section 4 in advance, the CPU 32 outputs a karaoke volume control signal S, a melody volume control signal S, is output to the musical tone generating section 2o, and the set volume values are output to the musical tone generating section 20.
Preset in .

When the karaoke user inputs the song number of a desired song by operating the song selection section 2, the CPU accesses the storage device 10 according to the song number and stores the performance data D (karaoke sound data D1 and melody sound data) corresponding to the song number. Data D
2) are sequentially read out and transferred to the tone generating section 20.

The musical sound generation unit 20 generates a karaoke sound audio signal SI based on the karaoke sound data D1 in the transferred performance data D.
At the same time, a melody-sound audio signal s2 is generated based on the melody-sound data D2. At this time, the musical sound generation unit 2o generates the karaoke sound audio signal S and the melody sound audio signal Sz at a level corresponding to the precented volume value.
and generate.

Karaoke sound audio signal SI and melody sound audio signal S
, are outputted to the mixer 60, and a single melody-tone audio signal S2 is outputted to the pitch detection means 40.

The mixer 60 mixes the singing audio signal S by the singer inputted from the microphone 50 with the karaoke sound audio signal S1 and the melody-sound audio signal S2 inputted from the musical sound generation section 20 to generate a mixed audio signal S4. The mixed audio signal S4 is amplified by the amplifier 70 and then output from the speaker 80.

As described above, the singer sings along with the karaoke performance, and at this time, the pitch of the singer's singing can be adjusted by referring to the melody sound.

The volume of the melody tone is based on the initial volume setting. If the singer is not confident in the pitch, write the melody in advance.
The volume of the sound is set high, and when you are confident, it is set low depending on your level of confidence. When set to zero level, no melody sound is output.

On the other hand, the singing audio signal S from the microphone 50 is converted by the first frequency-voltage converter 41 into a voltage proportional to its frequency (pitch) and input to the comparing means 43. Further, the melody-tone audio signal S2 from the musical tone generating section 20 is converted by the second frequency-voltage converter 42 into a voltage proportional to its frequency (pitch), and is input to the comparing means 43. The comparison means 43 outputs a comparison output voltage signal S according to the difference between the two input voltages.

The greater the difference in frequency (pitch) between the singing audio signal S from the microphone 50 and the melody-sound audio signal S2 from the musical tone generator 20, the higher the level of the comparison output voltage signal S becomes. That is, the larger the comparison output voltage signal S is output as the pitch of the singer deviates from the pitch of the melody tone generated by the musical tone generation section 20.

This comparison output voltage signal S is converted into a digital signal by the A/D converter 31 in the volume control means 30 and input to the CPU 32. The CPU 32 determines the difference in frequency (pitch) between the singing audio signal S and the melody audio signal s2 based on the input digital signal. Then, the CPU 32 runs according to a predetermined program.
A melody/volume control signal s7 based on the amount of deviation is generated and output to the musical tone generating section 20.

The musical sound generation section 20 adjusts the volume of the melody sound audio signal S2 generated from the melody sound data D2 inputted from the storage device 10, based on the melody sound volume control signal S from the CPU 32.

That is, the more the singer's pitch deviates from the pitch of the melody tone, the higher the level of the melody tone audio signal S2 becomes.
The smaller the pitch deviation, the lower the level of the melody-sound audio signal S2. This automatic adjustment of levels occurs in real time. In other words, when the singer's pitch is out of tune with the melody note, the melody note is made louder to support the singer, and when the pitch is no longer out of tune, the melody note is made smaller to avoid distracting the singer. Nao Nisu,
In the above embodiment, the volume of the melody sound was changed by changing the level of the melody sound signal S2, but the melody sound signal S2 was connected to the speaker 80 through an amplifier different from the amplifier 70, A volume control means may adjust the volume of the amplifier to change the volume of the melody sound.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention, the amount by which the singer's pitch deviates from the melody pitch from the musical sound generation section is detected, and the larger the deviation amount, the more the melody becomes - The volume of the sound is increased, and the volume of the melody sound is decreased as the amount of noise decreases, controlling in real time, so it is possible to support the singer in a very natural way so that it is easier to sing at the correct pitch.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a karaoke apparatus according to an embodiment of the present invention. 10...Storage device 20...Musical sound generation unit 30...Volume control means 40...Pitch detection means 41...First frequency-voltage converter 42...Second frequency-voltage converter 43 Comparison means 50 Microphone (audio input means) S2 Melody-sound audio signal S3 Singing audio signal

Claims (1)

[Claims] (1) A storage device that stores performance data related to a plurality of songs; a musical sound generation unit that generates a karaoke sound audio signal and a melody sound audio signal based on the performance data input from the storage device; and the karaoke sound audio. output means for outputting a karaoke sound and a melody sound based on the signal and a melody sound audio signal; an audio input means for outputting a singing audio signal based on a user's singing voice; and a melody sound input from the musical sound generation section. pitch detecting means for detecting a pitch deviation between the signal and the singing voice signal inputted from the voice input means; and a pitch detecting means for detecting a pitch deviation between the signal and the singing voice signal inputted from the voice input means; A karaoke device comprising a volume control means for changing the volume from high to low.