The question of fit of harmonics to a sinusoidal model is important for quality coding of musical sounds. By characterizing phase relations among the harmonics, a separation of the harmonics into sinusoidal and non-sinusoidal parts is performed. Applying poloyspectral analysis we show that sinusoidality is closely related to frequency but not to phase coupling. We present a bispectral algorithm for frequency coupling sinusoidality detection and derive a simplified algorithm that determines an upper phase coupling cutoff frequency based on kurtosis of the residual signal.

Author: Dubnov, Shlomo
Affiliation: Ben-Gurion University, Beer Sheva, Israel
AES Conference: 17th International Conference: High-Quality Audio Coding (September 1999)
Paper Number: 17-030
Publication Date: September 1, 1999 Import into BibTeX
Subject: High Quality Audio Coding
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=8058

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