Title :
Blind separation of impulsive noise from corrupted audio signal
Author :
Lau, W.H. ; Hui, F.L. ; Leung, S.H. ; Luk, A.
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
fDate :
2/1/1996 12:00:00 AM
Abstract :
The authors present a new method for separating the impulsive noise from a corrupted audio signal. It is shown that if the audio signal is assumed to be Gaussian distributed, the third-order cumulants of the impulsive noise can be separated, based upon the corrupted audio signal. The impulsive noise can then be reconstructed via the relationship between the bispectrum and the Fourier spectrum. Finally, the audio signal is restored by simply subtracting the reconstructed impulsive noise from the signal
Keywords :
Gaussian distribution; acoustic noise; acoustic signal processing; audio signals; higher order statistics; signal restoration; Fourier spectrum; Gaussian distribution; bispectrum; blind separation; corrupted audio signal; impulsive noise; signal reconstruction; signal restoration; third-order cumulants;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960139
