Amplitude Modulated Sinusoidal Signal Decomposition for Audio Coding

M. G. Christensen, A. Jacobson, S. V. Andersen, Søren Holdt Jensen

    Research output: Contribution to journalJournal articleResearchpeer-review


    In this paper, 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
    JournalI E E E Signal Processing Letters
    Issue number7
    Pages (from-to)389 - 392
    Publication statusPublished - 2006

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