Improved Speech Enhancement Based on Higher Order Cumulants

Author

Wang Hong ; Fanwei Wei

Author_Institution

309 Hosp., Dept. of Inf., PLA, Beijing, China

fYear

2013

fDate

16-18 Oct. 2013

Firstpage

567

Lastpage

570

Abstract

A new speech enhancement scheme based on higher order cumulants (HOC) is proposed. Under the condition of Gaussian noise, a method for estimating the probability of speech absence in each frequency bin of each frame is devised based on HOC. Further, a kind of modified Minimum Mean Square Error (MMSE) estimator based on HOC is proposed. Objective measurements and subjective tests show that the proposed algorithm could restrain the residual noise and "musical noise" more effectively than the traditional spectral subtraction method and MMSE method particularly under the condition of low signal-to-noise ratio (SNR).

Keywords

Gaussian noise; least mean squares methods; probability; signal denoising; spectral analysis; speech enhancement; Gaussian noise; HOC; MMSE estimator; MMSE method; SNR; frequency bin; higher order cumulants; minimum mean square error estimator; musical noise; objective measurements; probability estimation; residual noise; signal-to-noise ratio; spectral subtraction method; speech absence; speech enhancement scheme; subjective tests; Gaussian noise; Noise measurement; Signal to noise ratio; Speech; Speech enhancement; MMSE; Speech enhancement; higher order cumulant; speech absence probability;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Hiding and Multimedia Signal Processing, 2013 Ninth International Conference on

Conference_Location

Beijing

Type

conf

DOI

10.1109/IIH-MSP.2013.146

Filename

6846702