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Nonlinear time-frequency domain operators for decomposing sounds into loudness, pitch and timbre

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2 Author(s)
M. Abe ; Dept. of Math. Eng. & Inf. Phys., Tokyo Univ., Japan ; S. Ando

We propose a method for decomposing instantaneous changes of sounds into three energy components, i.e., loudness, pitch, and timbre. These operators are derived from an eigenstructure analysis of the time-frequency gradient space (a 3-D space spanned by a modulus and partial derivatives of a wavelet transform). By several experiments, we found that they have superior resolution and sensitivity for segmenting speech into phonemes, characterizing dynamical nature of musical sounds, and so on

Published in:

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on  (Volume:2 )

Date of Conference:

9-12 May 1995