Amplitude modulated sinusoidal signal decomposition for audio coding

Mads Græsbøll Christensen, Andreas Jakobsson, Søren Vang Andersen, Søren Holdt Jensen

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8 Citations (Scopus)
355 Downloads (Pure)

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.
Original languageEnglish
JournalIEEE Signal Processing Letters
Volume13
Issue number7
Pages (from-to)389 - 392
ISSN1070-9908
DOIs
Publication statusPublished - 19 Jun 2006

Keywords

  • amplitude modulation
  • audio coding
  • least mean squares methods
  • nonlinear distortion

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