Real-time VQ codebook generation hardware for speech processing

Author

Chase, David ; Gersho, Allen

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

fYear

1988

fDate

11-14 Apr 1988

Firstpage

1730

Abstract

A hardware subsystem is described which, in conjunction with an IBM PC, facilitates the development of various types of vector-quantization (VQ)-based speech coders and also serves as a powerful general-purpose DSP (digital-signal-processor) development system. Each iteration of the usual VQ codebook-design algorithm can be performed by playing, in real-time, an analog cassette tape of recorded speech into the hardware. The hardware is based on the TMS320C25 processor and a semicustom VLSI coprocessor used for VQ codebook searching. The architecture of the system is described and some of the most useful applications that it supports are outlined

Keywords

analogue-digital conversion; computerised signal processing; iterative methods; microprocessor chips; real-time systems; speech analysis and processing; IBM PC; TMS320C25 processor; development system; digital-signal-processor; general-purpose DSP; iteration; real time VQ codebook generation hardware; semicustom VLSI coprocessor; speech processing; Codecs; Computer architecture; Digital signal processing; Hardware; Random access memory; Read-write memory; Speech coding; Speech processing; Vector quantization; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on

Conference_Location

New York, NY

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1988.196951

Filename

196951