Automatic sound-source scoring method and device
A sound source and automatic technology, applied in speech analysis, speech synthesis, speech recognition, etc., can solve the problems that the sound source cannot be compared with the machine, score discounts, and lack of time difference tolerance characteristics
Inactive Publication Date: 2005-10-05
SUNPLUS TECH CO LTD
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Problems solved by technology
[0004] Because each person's voice is different, and the sound source produced by ordinary people cannot be compared with the machine. Take the singing score as an example, even if the singer's singing voice, timbre, and beat are similar to the original singer, it still cannot be 100% in line with the preset sound source. energy waveform
However, the known sound source scoring devices do not have the design to tolerate time difference, that is, the singer's sound source frequency band can only be compared with the fixed corresponding frequency band to calculate the score. If there is a slight time difference, the final calculated score will be greatly reduced. This scoring method is too strict and unreasonable
It can be seen that the known sound source scoring device does not possess the time difference tolerance characteristic, and there is a need for improvement
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[0043] Please see first figure 1 The functional block diagram of the automatic sound source grading device 1 of the present embodiment, it is a singing grading device, to score the repertoire sung by the user, such as karaoke (karaoke) grading device, certainly also can be a voice grading device, or other Equivalent sound source scoring device. Such as figure 1As shown, the scoring device 1 includes a receiving unit 11 , an analog to digital converter 12 (analog to digital converter), a memory 13 , a characteristic parameter extraction unit 14 , a scoring unit 15 , and a display unit 16 . Receiving unit 11 is preferably a microphone, in order to receive the sound source to be tested that the user (or singer) sings the song; Or the melody of the original singer of the song, etc., and the memory 13 of the present embodiment also has a temporary storage function; the display unit 16 is mainly used to display the sound source scores of the songs sung by the singer, such as a sco...
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The disclosed method and device is in use for evaluating mark of a piece of sound source to be measured. Based on a prearranged length of a sound frame, the piece of sound source to be measured is divided into multiple wavebands to be measured. Thus, after calculating each mark of waveband to be measured, the evaluating device accumulates each mark and averages the accumulated mark. First, picking up a piece of waveband to be measured, the invention compares the picked waveband with wavebands in adjacent time axis on the relevant reference waveband in order to select out a piece of reference waveband, which possesses a optimal mark of a piece of sound source. Considering factor of micro time difference, the invention increases rationality of evaluating sound source.
Description
technical field [0001] The present invention relates to a scoring method and device, in particular to an automatic sound source scoring method and device, and its scope of application includes applications in technical fields such as speech scoring systems, audio-visual accompaniment systems, and the like. Background technique [0002] In a general sound source scoring system, such as an audio-visual singing scoring system, the captured sound source is mainly compared with the pre-stored sound source to calculate the former sound source score. It is known that pitch is usually used to compare and calculate the sound source score according to the frequency change of the sound source. However, the calculation process of calculating the score of the sound source based on the pitch is more complicated and the amount of calculation is high; in addition, since the pitch is estimated from the waveform of the sound source, although the vowel can be stably presented, the consonant pa...
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IPC IPC(8): G06F40/00G10L25/00
Inventor 张弘杰
Owner SUNPLUS TECH CO LTD