Title :
A restoration method of the clipped audio signals based on MDCT
Author :
Zhang, Dawei ; Bao, Changchun ; Deng, Feng ; Xia, Bingyin ; Chen, Hao
Author_Institution :
Speech & Audio Signal Process. Lab., Beijing Univ. of Technol., Beijing, China
Abstract :
A kind of restoration method of the clipped audio signal based on Modified Discrete Cosine Transform (MDCT) is proposed in this paper. The front-end of the clipped audio are detected by the peak detection algorithm. The Clipped audio signal is restored by the soft-thresholding method and spectral weighting function method in the MDCT domain. Both the objective evaluation and subjective listening test indicate that the quality of the clipped signal is improved effectively by the proposed method and has a comparable performance with the method of cubic interpolation.
Keywords :
audio signal processing; discrete cosine transforms; interpolation; MDCT domain; clipped audio signals; cubic interpolation; modified discrete cosine transform; objective evaluation; peak detection algorithm; restoration method; soft-thresholding method; spectral weighting function method; subjective listening test; Interpolation; Jitter; Nonlinear distortion; Signal to noise ratio; Spectrogram; MDCT; clipping restoration; peak detection; soft- thresholding; spectral weighting function;
Conference_Titel :
Signal Processing and Information Technology (ISSPIT), 2011 IEEE International Symposium on
Conference_Location :
Bilbao
Print_ISBN :
978-1-4673-0752-9
Electronic_ISBN :
978-1-4673-0751-2
DOI :
10.1109/ISSPIT.2011.6151569
