Title :
Improved Speech Enhancement Based on Higher Order Cumulants
Author :
Wang Hong ; Fanwei Wei
Author_Institution :
309 Hosp., Dept. of Inf., PLA, Beijing, China
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;
Conference_Titel :
Intelligent Information Hiding and Multimedia Signal Processing, 2013 Ninth International Conference on
Conference_Location :
Beijing
DOI :
10.1109/IIH-MSP.2013.146
