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

Author

Abe, Mototsugu ; Ando, Shigeru

Author_Institution

Dept. of Math. Eng. & Inf. Phys., Tokyo Univ., Japan

Volume

2

fYear

1995

fDate

9-12 May 1995

Firstpage

1368

Abstract

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

Keywords

acoustic signal processing; eigenvalues and eigenfunctions; loudness; music; signal resolution; speech processing; time-frequency analysis; wavelet transforms; 3-D space; Am/FM signals; eigenstructure analysis; energy components; experiments; loudness; modulus; musical sounds; nonlinear time-frequency domain operators; partial derivatives; phonemes; pitch; resolution; sensitivity; sound decomposition; speech segmentation; timbre; time-frequency gradient space; wavelet transform; Acoustical engineering; Power engineering and energy; Signal analysis; Signal resolution; Speech; Timbre; Time frequency analysis; Wavelet analysis; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.480495

Filename

480495