Spoken word recognition with digital cochlea using 32 DSP-boards

Author

Namiki, Masao ; Hamamoto, Takayuki ; Hangai, Seiichiro

Author_Institution

Dept. of Electr. Eng., Sci. Univ. of Tokyo, Japan

Volume

2

fYear

2001

fDate

2001

Firstpage

969

Abstract

A digital cochlea, which has a cascade of 16 filter sections, is realized by 32 commercially available DSP-boards. Each section consists of a travelling waves filter, a velocity transformation filter and a second filter. The artificial cochlea is also applied to spoken word recognition by feeding 16 output signals through a multi-channel A/D converter on PC. From experimental results, it is found that 50 Japanese words uttered by three speakers are recognized with 3% error This means the cochlea extracts feature parameters for speech recognition and shows the possibility of the signal processor for cochlear implants

Keywords

add-on boards; analogue-digital conversion; digital filters; digital signal processing chips; frequency response; hearing aids; speech recognition; DSP-boards; Japanese words; artificial cochlea; digital cochlea; multi-channel A/D converter; spoken word recognition; travelling waves filter; velocity transformation filter; Digital filters; Digital signal processing; Electrodes; Feature extraction; Filtering; Frequency; Low pass filters; Speech recognition; Transfer functions; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.941078

Filename

941078