Warped ARMA filters in high quality audio coding

Author

Deriche, Mohanied ; Ning, Daryl

Author_Institution

Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia

Volume

2

fYear

2003

fDate

1-4 July 2003

Firstpage

153

Abstract

In this paper, a novel audio coder using the discrete wavelet transform (DWT) and a warped linear prediction (WLP) model, is proposed. In contrast to conventional LP, WLP allows for the control of frequency resolution to closely match the response of the human auditory system. The residual from the inverse WLP filtering is analyzed by a wavelet filterbank designed to approximate the critical bands. For monophonic signals sampled at 44.1 kHz, the coder achieves near transparent quality at an average bit-rate of 64 kb/s.

Keywords

audio coding; discrete wavelet transforms; filtering theory; quantisation (signal); signal resolution; signal sampling; 44.1 kHz; 64 kbit/s; audio coder; audio coding scheme; discrete wavelet transform; frequency resolution control; human auditory system; monophonic signals; quantization error; warped ARMA filters; warped linear prediction model; wavelet filterbank; Audio coding; Auditory system; Control systems; Discrete wavelet transforms; Filtering; Filters; Frequency; Humans; Predictive models; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on

Print_ISBN

0-7803-7946-2

Type

conf

DOI

10.1109/ISSPA.2003.1224838

Filename

1224838