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A voice identification fixed point programming disposal

A processing method and technology of speech recognition, applied in speech recognition, speech analysis, instruments, etc., can solve the problems of small memory, poor recognition performance, slow processing unit execution speed, etc., and achieve the effect of reducing usage

Inactive Publication Date: 2008-07-09
WUDI SCI & TECH (XIAN) CO LTD
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AI Technical Summary

Problems solved by technology

However, on the hardware and software with limited resources, the execution speed of the processing unit is slow, and the memory is small. Many technologies and algorithms developed on computer platforms must be greatly modified before they can be put into such platforms to improve recognition speed and reduce memory usage. To meet the hardware specifications, but also to ensure that the recognition performance does not deteriorate

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  • A voice identification fixed point programming disposal
  • A voice identification fixed point programming disposal
  • A voice identification fixed point programming disposal

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Embodiment Construction

[0020] Referring to Fig. 1, the speech recognition fixed-point processing method of the present invention is as follows:

[0021] S11: providing a voice signal;

[0022] S12: Using an integer algorithm to obtain the cepstral coefficient of the speech signal;

[0023] S13: Establish an acoustic model of a long integer type of the speech signal;

[0024] S14: Using the cepstrum coefficients and the acoustic model to perform the Viterbi algorithm to obtain the identification comparison value.

[0025] The above-mentioned cepstral coefficients include a Mel-Frequency Cepstrum Coefficients (MFCC), and the values ​​stored in the acoustic model of long integer type can be expressed as Mean*32768*2048, Variable*32768*2048, (Transition Probability )*32768 and Gconst*32768, when calculating the identification comparison value, Mean and Variable and Mel cepstral coefficient C M Operation, the result is then calculated with Gconst and Transition Probability, and the C obtained by the a...

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Abstract

The invention relates to a fixed-point processing method of speech recognition, which comprises the following steps of: 11) providing a speech signal; 12) calculating cepstrum coefficients of the speech signal by using integer algorithm; 13) establishing an acoustic model of long integer type of the speech signal; 14) applying the cepstrum coefficients and the acoustic model to viterbi algorithm to gain the comparison value of recognition. The invention provides the fixed point processing method of speech recognition with less consumption of hardware resource.

Description

technical field [0001] The invention relates to a fixed-point processing method for speech recognition, in particular to a method for implementing fixed-point processing for speech recognition with integer arithmetic. Background technique [0002] With the advancement of science and technology, various electronic products are introduced. However, for most users who are not familiar with electronic products, the interface is still the biggest obstacle to using electronic products. The unfriendly user interface not only makes users feel frustrated, but even makes some users feel disgusted and fearful about using electronic products. Therefore, "oral dialogue", the most convenient, natural and communication medium that can be used without special learning, has been highly expected for a long time. With the development of mobile communication, such demands are becoming more and more urgent. In the foreseeable future, handheld mobile devices will not only be a tool for people t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/00G10L15/28
Inventor 赵仁宏陈淮琰
Owner WUDI SCI & TECH (XIAN) CO LTD
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