Scale transform in speech analysis

Author

Umesh, S. ; Cohen, Leon ; Marinovic, Nenad ; Nelson, Douglas J.

Author_Institution

City Univ. of New York, NY, USA

Volume

7

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

40

Lastpage

45

Abstract

In this paper, we study the scale transform of the spectral-envelope of speech utterances by different speakers. This study is motivated by the hypothesis that the formant frequencies between different speakers are approximately related by a scaling constant for a given vowel. The scale transform has the fundamental property that the magnitude of the scale-transform of a function X(f) and its scaled version √αX(αf) are same. The methods presented here are useful in reducing variations in acoustic features. We show that the F-ratio tests indicate better separability of vowels by using scale-transform based features than mel-transform based features. The data used in the comparison of the different features consist of 200 utterances of four vowels that are extracted from the TIMIT database

Keywords

cepstral analysis; speech processing; transforms; F-ratio tests; acoustic features; formant frequencies; scale-transform based features; scaling constant; spectral-envelope; speech analysis; speech utterances; Acoustic testing; Cepstral analysis; Cepstrum; Cities and towns; Data mining; Frequency; Loudspeakers; Marine technology; Speech analysis; Speech recognition;

fLanguage

English

Journal_Title

Speech and Audio Processing, IEEE Transactions on

Publisher

ieee

ISSN

1063-6676

Type

jour

DOI

10.1109/89.736329

Filename

736329