Amplitude modulated sinusoidal signal decomposition for audio coding

Author

Christensen, Mads Græsboll ; Jakobsson, Andreas ; Andersen, Soren Vang ; Jensen, Soren Holdt

Author_Institution

Dept. of Commun. Technol., Aalborg Univ.

Volume

13

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

389

Lastpage

392

Abstract

In this letter, we present a decomposition for sinusoidal coding of audio, based on an amplitude modulation of sinusoids via a linear combination of arbitrary basis vectors. The proposed method, which incorporates a perceptual distortion measure, is based on a relaxation of a nonlinear least-squares minimization. Rate-distortion curves and listening tests show that, compared to a constant-amplitude sinusoidal coder, the proposed decomposition offers perceptually significant improvements in critical transient signals

Keywords

amplitude modulation; audio coding; least mean squares methods; nonlinear distortion; amplitude modulation; arbitrary basis vector; audio coding; linear combination; nonlinear least-squares minimization; perceptual distortion measurement; rate-distortion curve; sinusoidal signal decomposition; Amplitude modulation; Audio coding; Distortion measurement; Minimization methods; Modulation coding; Nonlinear distortion; Rate-distortion; Signal resolution; Testing; Vectors; Audio coding; parametric coding; signal representations; sinusoidal;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2006.871856

Filename

1642706