子带频谱分析的语音增强

应用科学学报 ›› 2006, Vol. 24 ›› Issue (3): 232-235.

子带频谱分析的语音增强

徐静波, 于洪涛, 冉崇森

信息工程大学信息工程学院, 河南郑州 450002

收稿日期:2005-01-14 修回日期:2005-07-08 出版日期:2006-05-31 发布日期:2006-05-31
作者简介:徐静波,讲师,研究方向:信号处理,E-mail:xjb_2002318@sohu.com;再崇森,教授,博导,研究方向:通信信号处理,E-mail:sen39@163.com
基金资助:
河南省自然科学基金资助项目(0411010100)

Speech Enhancement Using Sub-band Spectral Analysis

XU Jing-bo, YU Hong-tao, RAN Chong-sen

Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China

Received:2005-01-14 Revised:2005-07-08 Online:2006-05-31 Published:2006-05-31

摘要/Abstract

摘要： 提出一种有效的语音增强算法,该算法使用重叠相加FFT滤波器进行谱幅度估计,给出噪声估计的两个均值参数,此参数适用于任何噪声.而且进行噪声估计无需检测语音间隙,无需VAD的运算过程,克服了单信道噪声压缩算法的缺点.

关键词: 噪声估计, 语音激活检测, FFT滤波器, 谱幅度估计

Abstract: This paper describes an efficient algorithm for enhancement of speech signals, which is based on estimation of spectral amplitude using an overlap-add FFT filter bank.It can be adjusted to different kinds of noise by means of two parameters.The speech enhancement system requires neither speech pause detection for noise estimation nor VAD (voice activity detection), and overcomes disadvantages existing in single channel noise suppression algorithms.

Key words: FFT filter, VAD, spectral amplitude estimation, noise estimation

中图分类号:

徐静波, 于洪涛, 冉崇森. 子带频谱分析的语音增强[J]. 应用科学学报, 2006, 24(3): 232-235.

XU Jing-bo, YU Hong-tao, RAN Chong-sen. Speech Enhancement Using Sub-band Spectral Analysis[J]. Journal of Applied Sciences, 2006, 24(3): 232-235.