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Syncopating note method based on energy

An energy and note technology, applied in speech analysis, instruments, etc., can solve the problem of large amount of calculation of hidden Markov model, and achieve the effect of simple and reliable judgment, unified and stable calculation method

Inactive Publication Date: 2010-05-05
INST OF ACOUSTICS CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the calculation amount of the method based on the hidden Markov model is relatively large

Method used

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  • Syncopating note method based on energy
  • Syncopating note method based on energy
  • Syncopating note method based on energy

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Embodiment

[0021] The present invention is a method for segmenting musical notes based on harmonics and prominence, comprising the following steps:

[0022] The speech signal is regarded as a frame signal every 32 milliseconds, the interval between adjacent frames is 10 milliseconds, and the overlap between adjacent frames is 22 milliseconds.

[0023] Calculate the harmonic sum of each frame of speech, and the harmonic sum refers to the energy sum of the fundamental frequency of the signal and its harmonics. Among them, f 0 is the fundamental frequency value of the nth frame, S(.) is the signal power spectrum, h is the compression factor, 0

[0024] figure 1 The horizontal axis is the frame number n of the time frame, and the vertical axis is the harmonic and energy H(n). The solid line in the figure is a section of harmonic and energy curve (the curve should be a series of discrete points, which is intuitive here For the sake of drawing it as a curve).

[0025] The following takes ...

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PUM

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Abstract

This invention relates to one single sound division method, which comprises the following steps: a, processing sound signal by frames; b, computing each frame resonance wave and energy; c, computing each frame resonance wave and energy protruding degree; d, through comparing whole language signal degree values; e, judging protruding delta value is larger than one; if yes then using the electrode value as sound character division point.

Description

technical field [0001] The present invention relates to a method for performing note segmentation on a single sound, more specifically, the present invention relates to an energy-based note segmentation method. Background technique [0002] The segmentation of notes is generally performed according to the ups and downs of energy. When the energy is less than a set threshold, it is considered that there is a note split point at this position. This method is difficult to correctly segment the notes when the pronunciation is very continuous and the pitch does not change. There is also a hidden Markov model widely used in speech recognition for note segmentation (such as HH Shih, SS Narayanan, and CCJ Kuo, "An HMM-based approach to humming transcription," in 2002 IEEE International Conference on Multimedia and Expo ( ICME2002), August2002). This approach treats musical notes as individual Hidden Markov Models. The Hidden Markov Model is a statistical model that requires a co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00
Inventor 李明刘建颜永红
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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