JP2001175266A - Karaoke system with automatically controlled accompaniment tempo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a KARAOKE system with automatically controlled accompaniment tempo, with which an accompaniment easy to sing for everybody is played by automatically controlling the tempo of the accompaniment of KARAOKE corresponding to the tempo or variation of singing of a singer. SOLUTION: An audio signal from a singer 2 detected by an audio detecting part 12 is compared with a signal part showing the tempo contained in music data 13 from a storage part 13 by a comparing part 14a. As a result of comparison, when the length of each sound in the audio signal is out of a prescribed range in respect of the signal part showing the tempo of the music data, a tempo control part 14b controls the accompaniment speed of the music data so as to be close to the tempo of the audio signal, namely, to be settled within the prescribed range. Since the KARAOKE system automatically controls the accompaniment corresponding to the tempo of the singer, the KARAOKE system easy to sing can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a karaoke apparatus for automatically adjusting the tempo of an accompaniment according to the tempo of a singer's song.

[0002]

2. Description of the Related Art In a conventional karaoke apparatus, a singer sings along with a karaoke accompaniment prepared in advance, and the subject of the music is the apparatus, and the singer must adapt to it. Specifically, karaoke song data, image information to be displayed on a television screen, and telop information are stored in a recording medium. Accompaniment is played from a speaker at the same time as the start of karaoke, a picture corresponding to the song is displayed on the television screen, and lyrics are displayed. Displayed on the screen. The singer sings a song according to the speed of the accompaniment emitted by the karaoke apparatus, and the voice input from the microphone is output from the speaker along with the accompaniment.

[0003]

By the way, each singer has a personality in how to sing, and some singers have a habit of singing at a slow tempo or a fast pitch, or sing with a delayed start. Therefore, it may be difficult for some singers to match the karaoke device. If the user wants to sing at a unique tempo, the karaoke apparatus can be adjusted in advance. However, if the tempo changes depending on the location of the song, it is inconvenient to predetermine the tempo uniformly. Then, the present inventor considered whether the above problem could be solved by automatically changing the accompaniment speed of the karaoke apparatus in accordance with the singing speed of the singer. An object of the present invention is to automatically adjust the tempo of karaoke accompaniment in accordance with the tempo of a singer's song and its change based on the above considerations, so that an accompaniment tempo automatic adjustment that makes it easy for anyone to sing. A karaoke device is provided.

[0004]

According to one aspect of the present invention, there is provided an automatic accompaniment tempo karaoke apparatus according to the present invention, comprising: a microphone; a voice detecting unit for detecting voice input from the microphone; Storage means for storing accompaniment data including: a signal portion indicating the tempo, a comparison means for comparing the tempo of the audio signal detected by the audio detection section, a comparison result by the comparison means, Tempo adjusting means for adjusting the accompaniment speed of the accompaniment data to approach the tempo of the audio signal when the tempo is out of a predetermined range of the signal portion indicating the tempo;
An accompaniment playing section that converts accompaniment data whose accompaniment speed is adjusted when the distance is out of the predetermined range to an analog signal and outputs an audio signal; and an analog signal of the audio signal and music data from the accompaniment playing section. And display sound output means for outputting and displaying the display data corresponding to the music. Further, according to the present invention, in the above configuration, the signal portion indicating the tempo included in the accompaniment data is
The comparison means compares the length of each interval of the accompaniment data with the length of each interval of the audio signal detected by the audio detection unit. The tempo adjusting means may adjust the accompaniment speed to be closer to the tempo of the audio when the length of each interval of the audio signal is out of a predetermined range with respect to the length of each interval of the accompaniment data. It is configured to adjust.
Further, according to the present invention, in the above-described configuration, the comparing unit includes:
The average of the tempo shift amount is calculated by performing a comparison in units of one or more measures, and when the average value is out of the predetermined range, the tempo adjustment unit changes the accompaniment speed of the audio. It is configured to adjust so as to approach the tempo.

[0005] According to the above configuration, the accompaniment speed of the karaoke apparatus follows the tempo of the singer, so that a satisfactory tempo can be provided and the singer can easily sing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view showing an external appearance of an automatic accompaniment tempo karaoke apparatus according to the present invention. The television 3 is mounted on the karaoke apparatus 5, and the amplifier 6 and the video generator 7 are arranged below the karaoke apparatus 5. The singer 2 holding the microphone 1 sings while watching the lyrics telop 4 flowing on the screen. When the singing speed of the singer 2 is higher or lower than a predetermined value, the karaoke apparatus 5 controls the tempo (speed) of the music to be performed so as to match the singing speed of the singer 2.

FIG. 2 is a block diagram showing an embodiment of the circuit of the karaoke apparatus for automatically adjusting the accompaniment tempo according to the present invention. The karaoke apparatus according to this embodiment describes only parts directly related to the present invention. The karaoke apparatus 5 includes a voice detection unit 12, a storage unit 13 for storing music data including a signal portion indicating a tempo, a control unit 14 including functional units such as a comparison unit 14a and a tempo adjustment unit 14b, and an accompaniment performance unit 16 including a synthesizer. It is composed of The voice sung by the singer 2 is input to the microphone 1 and detected by the voice detection unit 12 as a voice signal (singing voice). on the other hand,
The music data 13a is read from the storage unit 13, and a signal of a pitch of each interval (a 16th musical score, an 8th musical score, a 4th musical score, a 4 minute pause, etc.) constituting the musical composition is input to the control unit 14. The comparison unit 14a of the control unit 14 compares the interval (length) at each interval level of the audio signal with the interval of each interval of the music data.

As a result of the comparison, when the interval of each pitch level of the audio signal is larger or smaller than a predetermined interval with respect to the interval of each pitch of the music data, the tempo adjusting unit 1
4b adjusts the interval of each interval of the music data so as to fall within a predetermined range of the interval of each interval of the audio signal. The image data and telop information read from the storage unit 13 in association with the music data and audio signal and the music data thus processed are input to the accompaniment performance unit 16. The accompaniment performance section 16 converts the music data into analog signals using a synthesizer, and outputs these signals along with the audio signal, image information, and telop information. The display unit (television) 3 displays an image corresponding to the music data and plays a telop. An accompaniment and a singing voice are output from the loudspeaker 6.

Next, the operation will be described with reference to FIGS. 2, 4 and 5 according to the flow chart of FIG.
The singer can operate the operation unit 20 of the karaoke apparatus to make a music request and adjust the tempo of the music as necessary (step (hereinafter referred to as "S") 30).
1). This adjustment is manual. When the performance is started (S302), music data and the like are read from the storage unit 13, images and lyrics are displayed on the display unit 3 under the control of the control unit 14, and accompaniment and singing voice are played from the loudspeaker unit 6. At this time, the length of each interval of the music data and the information of the length of each interval of the singer's voice signal detected by the voice detection unit 12 are input to the comparison unit 14a of the control unit 14 and compared (S303). ).

FIG. 4 is a diagram schematically showing a waveform of information indicating the singer and the tempo of the music data. The vertical axis indicates the pitch (frequency), and the horizontal axis indicates time (t). A solid line 1) represents a waveform based on music data, and a dashed line 2) represents a waveform based on a singer's voice. In this example, for simplicity, a case is shown in which music data having a pitch of "do, mi, so, re, shi" is played in quarter note length units. Normally, the waveform of music data has a complicated shape depending on factors such as pitch, timbre, phrase, and the like, but is a diagram in which rectangular waveforms are written out focusing on the length of each pitch. The same applies to the voice of the singer. Assuming that the length of the quarter note indicated by the music data is a and the length of the same pitch of the voice is b, the comparison unit 14a performs a b / a comparison operation for each pitch.

In S304 of "change of accompaniment speed" in FIG.
Means that the tempo adjustment unit 14b calculates b / a for each pitch
The average value (b / a) of two measures_avIs calculated,
Average value (b / a)_avIs a predetermined range as shown in FIG. 5, for example.
0.8 (b₁ / A) to 1.2 (b _Two / A)
It is determined whether or not. If it is not within the specified range,
Set the data tempo to a predetermined range of 0.8 (80%) to 1.2
(120%). Within a predetermined range
In some cases, no adjustment is made.

After performing the above processing, the control unit 14 determines whether or not the music has been completed (S305). If the tune has not ended, the process returns to S303 and the same processing is performed in order to continuously compare the length of each pitch of the singer and the tune data. When the song ends, the karaoke ends.

In the above-described embodiment, the case where the intervals are all quarter-notes has been described. However, in actuality, there are also two-notes, eighth-notes, sixteenth-notes, pause symbols, etc. It will be. Also, it is determined whether or not the result of calculating the average in units of two measures is within a predetermined range. However, the range in which the average value is calculated may be in units of one measure,
It may be two or more measures. Further, the predetermined range is set to 0.8
(80%) to 1.2 (120%), it is also possible to set larger or smaller than this. Further, although the length is compared in units of one musical score, it is also possible to compare the length in units of measures.

The tempo can be detected not only by voice but also by other methods. For example, by connecting a camera to the karaoke apparatus and capturing the image of the singer, the tempo can be detected from the movement of the singer. In such a case, the singer's movement difference signal is extracted to obtain the amount of movement per predetermined time, and is compared with the tempo information of the music data. Further, when the singer hits the pad or the like, the sound can be input to the microphone, and the accompaniment can be conducted at the tempo of the pad or the like.

[0015]

As described above, the present invention is configured so that the singer does not sing along with the karaoke apparatus, but accompanies the singer with the karaoke apparatus. Even if you sing slowly with a rhythm or accumulate rhythm, a karaoke device that plays along with the karaoke accompaniment and mainly singer as if singing in a live band was realized. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an automatic accompaniment tempo karaoke apparatus according to the present invention.

FIG. 2 is a block diagram showing an embodiment of a circuit of an automatic accompaniment tempo karaoke apparatus according to the present invention.

FIG. 3 is a flowchart for explaining the operation of FIG. 2;

FIG. 4 is a diagram schematically showing a waveform of information indicating a singer and a tempo of music data.

FIG. 5 is a diagram for explaining a specific comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Microphone 2 ... Singer 3 ... Display part (television) 4 ... Lyric telop 5 ... Karaoke apparatus 6 ... Loudspeaker part (amplifier) 7 ... Video generator 12 ... Sound detection part 13 ... Storage part 13a ... Music data (tempo 14 control section 14a comparison section 14b tempo adjustment section 16 accompaniment performance section

Claims (3)

[Claims] A microphone; a voice detection unit for detecting voice input from the microphone; a storage unit for storing accompaniment data including a signal portion indicating a tempo; a signal portion indicating the tempo; Comparing means for comparing the tempo of the audio signal detected by the detection unit, and comparing the tempo of the audio signal if the tempo of the audio signal is out of a predetermined range of the signal portion indicating the tempo. Tempo adjusting means for adjusting the accompaniment speed so as to approach the tempo of the audio signal, and converting the accompaniment data for which the accompaniment speed is adjusted when the tempo is out of the predetermined range into an analog signal and outputting an audio signal. An accompaniment performance section, and display loudspeaker output means for outputting and displaying analog signals of audio signals and music data from the accompaniment performance section and display data corresponding to the music. An automatic accompaniment tempo karaoke device, characterized by being achieved. 2. A signal portion indicating a tempo included in the accompaniment data is defined by the length of each of the musical intervals constituting the music, and the comparing means is configured to output the tempo of each of the musical intervals of the accompaniment data. The tempo adjustment unit compares the length of each of the intervals of the audio signal detected by the audio detection unit with the length of each of the intervals of the audio signal. 2. The automatic accompaniment tempo karaoke device according to claim 1, wherein the accompaniment speed is adjusted so as to approach the tempo of the voice when the sound is out of a predetermined range. 3. The comparison means calculates an average value of the tempo shift amount by performing comparison in units of one or more measures,
3. The automatic accompaniment tempo according to claim 1, wherein the tempo adjustment unit adjusts the accompaniment speed so as to approach the tempo of the voice when the average value is out of the predetermined range. Adjustment karaoke device.