Audio coding using sorted sinusoidal parameters

Author

Raad, M. ; Burnett, I.S.

Author_Institution

Sch. of Electr., Comput. & Telecommun. Eng., Wollongong Univ., NSW, Australia

Volume

2

fYear

2001

fDate

6-9 May 2001

Firstpage

401

Abstract

This paper describes a new audio coding scheme based on sinusoidal coding of signals. Sinusoidal coding permits the representation of a given signal through the summation of sinusoids. The parameters of the sinusoids (the amplitudes, phases and frequencies) are transmitted to allow the signal reconstruction. In the proposed scheme, the sinusoidal parameters are sorted according to energy content and perceptual significance. The most significant parameters are transmitted first allowing the use of only a small set of the parameters for signal reconstruction. The proposed scheme incurs a low delay and uses a 20 ms frame length. Results show that the coder operating at a mean rate of 39 kb/s, performs favorably in comparison with the MPEG-4 coder at 42 kb/s

Keywords

audio coding; delays; signal reconstruction; amplitude; audio coding; delay; energy content; frame length; frequency; perceptual significance; phase; signal reconstruction; sinusoid summation; sorted sinusoidal parameters; Audio coding; Australia; Bit rate; Delay; Fourier transforms; Frequency; MPEG 4 Standard; Signal reconstruction; Signal synthesis; Sorting;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921092

Filename

921092