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 language | English |
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Journal | IEEE Signal Processing Letters |
Volume | 13 |
Issue number | 7 |
Pages (from-to) | 389 - 392 |
ISSN | 1070-9908 |
DOIs | |
Publication status | Published - 19 Jun 2006 |
Keywords
- amplitude modulation
- audio coding
- least mean squares methods
- nonlinear distortion