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Institute of Electrical and Electronics Engineers, IEEE Signal Processing Letters, 7(13), p. 389-392, 2006

DOI: 10.1109/lsp.2006.871856

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Amplitude modulated sinusoidal signal decomposition for audio coding

Journal article published in 2006 by Mads Græsboll Christensen ORCID, Andreas Jakobsson, Soren Vang Andersen, Soren Holdt Jensen
This paper is available in a repository.
This paper is available in a repository.

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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