The speech recognition based on the bark wavelet and CZCPA features

被引：0
|
作者：
Zhang Xueying [1 ]
Bai Jing [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Informat Engn, Shanxi 030024, Peoples R China
来源：
2006 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-12 | 2006年
关键词：
Bark scale; speech recognition; wavelet; feature extraction;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The paper uses a new wavelet-Bark wavelet to meet critical frequency band division demand that is consistent with the perception of the human ear to the speech frequency. It is used in front-end processing of speech recognition system as filter bank instead of original FIR filter bank for improving the system performance. The paper gave the concept and parameter setting method of Bark wavelet. At the same time, the paper also presents an improved feature: CZCPA (Combining Zero-Crossings with Peak Amplitudes) based on ZCPA feature. The new feature includes the information of speech signals and its difference signal. It can improve system performance to some extent. The recognition network uses HMM. The experiment results show that the results of using CZCPA feature with Bark wavelet filters as front-end processor are superior to the results of using ZCPA feature with FIR filter as front-end in speech recognition system.
引用
收藏
页码：318 / +
页数：2
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