Speech analysis for hearing impaired using chirped wavelets

Author

Doser, Adele B.

Author_Institution

Dept. of Electr. Eng., Texas Univ., Dallas, TX, USA

Volume

2

fYear

2000

fDate

Oct. 29 2000-Nov. 1 2000

Firstpage

1494

Abstract

Wavelet techniques are utilized to process speech signals for the hearing impaired. We are interested in schemes that isolate and enhance short duration, broadband speech elements (such as unvoiced consonants) while still capturing narrowband speech components. Discerning unvoiced consonants presents an obstacle for hearing impaired persons. A dyadic scheme is proposed, using chirped wavelets, to seize the characteristics of broadband speech elements. The method is tested on speech data, in noise free and noisy conditions, and compared with sinusoidal based wavelets. Results demonstrate that chirped wavelets are useful in the analysis and enhancement of speech for the hearing impaired.

Keywords

hearing aids; spectral analysis; speech enhancement; wavelet transforms; chirped wavelets; dyadic scheme; enhancement; hearing impaired; narrowband speech components; short duration broadband speech elements; sinusoidal based wavelets; speech analysis; unvoiced consonants; wavelet techniques; Acoustic noise; Auditory system; Bandwidth; Chirp; Frequency; Narrowband; Spectrogram; Speech analysis; Speech enhancement; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-6514-3

Type

conf

DOI

10.1109/ACSSC.2000.911239

Filename

911239