JPS5887600A - Decoding of karaoke sound - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a karaoke machine that uses voice decoding to display scores on how well or poorly a singer sings in a bar, home, theater, etc., where the singer sings along with backing music such as a tape or record. This relates to a speech decoding method.

Traditionally, karaoke was just a matter of selecting songs and singing popular songs along with background music.

Therefore, when it comes to evaluating songs, the people who were present at the time are simply evaluating them in terms of ``good'' or ``bad'' based on their intuitive judgments, and each person's evaluation may be different. Since the judgment was based on sensitivity, it lacked accuracy and objectivity.The present invention was developed in light of the above-mentioned circumstances, and developed a voice decoding technology to accurately evaluate songs at karaoke. Moreover, we have completed a new karaoke audio decoding method that can be evaluated objectively.The purpose of the present invention is to decipher the audio signal from the microphone by comparing it with the basic data signal, and to perform calculations based on the same decomposition. The object of the present invention is to provide a karaoke voice decoding method that visually scores and displays the results.

Next, a karaoke voice decoding method according to the present invention will be explained in detail below.

First, the drawing shown in FIG. 1 is a block diagram of the entire apparatus used in carrying out the method of the present invention.
is an input source, 2 is a microphone, 3 is a speaker, 4 is a scoring display board, 5 is a separation regenerator, 6 is a signal converter, 7 is an amplifier, 8. is an A-D conversion circuit, 9 data memory circuit, l
O is a data decoding circuit, P is a performance signal, D is a basic data signal, and S and S are audio signals.

Next, the drawing shown in FIG. 1 shows an input tape 1a which is an embodiment of the input track 1, in which the tape track is divided into a pack performance track PT and a basic data track DT, and one track PT is used for backing performance. The structure is such that the sound is recorded and the basic data sound is recorded on the other track DT.

It should be noted that conventional karaoke tapes are those in which only the backing performance sound is recorded on a tape track, and this performance sound is simply reproduced in mono or stereo as a pack performance when singing with a microphone.

The drawing shown in FIG. 3 shows the relationship between the backing performance sound Ps recorded in the input source 1 and the basic data sound Ds, and the backing performance sound Ps is recorded from the prelude to the ending. However, the basic data sound DS is recorded only from the beginning to the end of the song, and before and after the basic data sound DS there is a start signal sound ss and an end signal sound E.
S is recorded, and both signal tones SS and ES serve as operation stop signals to the A-D conversion circuit 8.

As described above, the input source 1 used when implementing the method of the present invention
The input source l is not limited to the input tape 1a, but may be any source capable of recording and reproducing sound, such as a record disc or a card-type recording disc. Furthermore, the recording medium of the basic data sound DS may be the voice of a grocer singer or the like, or the sound of an electronic musical instrument that has a good shape of sound close to human voice.In short, the recording medium is the voice signal from the microphone 2. Any recording medium may be used as long as it can extract the basic data signal that can be compared with S.

Next, the karaoke audio decoding method of the present invention will be described with reference to the block diagram shown in Figure #I1. First, the input source l in which the backing performance sound and basic data are recorded is separated into the playback unit 5 (input tape In the case of 1 m, the head corresponds to this), the performance signal P and the basic data signal are separated and reproduced, and the performance signal P of the reproduced signal is reproduced by the amplifier 7 and the speaker 3, and the same speaker reproduced sound is reproduced. Microphone 2
It is used as background music when singing, and in this respect it is similar to conventional karaoke.

Then, the basic data signal (b) of the playback signal is an open signal Dt without being played back by the speaker, and the audio signal S from the microphone 2 is
This is used as the input for voice decoding, and the basic data signal RI and the voice signal S, which are same-manpower, are converted from an analog signal to a digital signal by a conversion circuit 8. This is for the purpose of performing arithmetic processing. Next, both signals are stored by the data memory circuit 9 until the St-comparison calculation process is performed.
This is because the data decoding circuit 10 does not perform arithmetic processing on the input signals sequentially, but performs comparison calculation processing on rhythm, etc. for the entire song or for each measure. After that, the data decoding circuit 10 converts the basic data based on the accurate rhythm and melody to the performance and the audio signal S based on the rhythm and melody of each individual person into the direction of time, pitch, pitch, etc. Based on both signals, the coincidence and mismatch of S is quantitatively compared and calculated.
In this comparison, a strict match is not required, but a quantitative tolerance for matching is set, and anything that exceeds the tolerance is calculated as a mismatch.

Finally, after the arithmetic processing is completed, the results are visually scored and displayed on a scoring display 814, and in the embodiment, the total score is digitally displayed as a full score of 'ft100.
Rhythm and high, middle and low tones are displayed in a bar-like manner. Note that any display method may be used as long as it is a visual display.

As described above, the karaoke voice decoding method of the present invention uses the human method of comparing and judging songs based on past memories and currently sung songs to perform a comparison operation using an unambiguous basic data signal and a voice signal S. Because it is used in the form of a test, accurate and objective evaluations are displayed, rather than uncertain and subjective evaluations such as song evaluations that involve emotions, musical sensibilities, and vague memories. It produces the effect that can be achieved.

Furthermore, since accurate and objective evaluations of songs can be made, the user's interest in singing and enjoyment in karaoke will further increase.

[Brief explanation of drawings]

Figure 1 is a block diagram of the overall equipment used in the karaoke voice decoding method of the present invention, Figure 2 is an explanatory diagram showing an input tape which is an example of an input source among the equipment, and Figure 3 is a doujin source. FIG. 3 is an explanatory diagram of the recording state of sound recorded in the . 1φ・Input source, P fist・Performance signal, D・・Basic data signal, 2・・Microphone. a.

Claims (1)

[Claims] 1) Separately reproduce the input source 1 in which the background performance sound and the basic data sound are recorded into the performance signal P and the basic data signal,
Among the reproduced signals, the performance signal P is used as a backing performance when singing with the microphone 2 through speaker reproduction, and the basic data signal among the reproduced signals is used as the input for voice decoding together with the audio signal S from the microphone 2. The basic data signal and audio signal S are first converted from analog signals to digital signals, then both signals are held until comparison processing is performed, and then the basic data is created using accurate rhythm and melody to match the performance. Data signals and individual rhythms and melodies
A karaoke machine characterized by quantitatively comparing and calculating the audio signal S with the sound signal S based on the direction of time passage, the pitch of the sound, etc., and finally, when the calculation processing is completed, the results are visually scored and displayed. Speech decoding method.