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

fYear

2011

fDate

14-17 Dec. 2011

Firstpage

253

Lastpage

257

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISSPIT.2011.6151569

Filename

6151569