A 1 V, 25 μW speech recognizer for portable systems

Author

Borgatti, M. ; Felici, M. ; Ferrari, A. ; Guerrieri, R.

Author_Institution

Dipt. di Elettronica, Inf. e Sistemistica, Bologna Univ., Italy

fYear

1998

fDate

11-14 May 1998

Firstpage

135

Lastpage

138

Abstract

The design and implementation of a speech recognizer in a silicon megacell for single-chip, voice-controlled systems is presented. It has been implemented in a 0.35 μm, 5-metal standard-cell CMOS technology. Minimum operating voltage is 0.8 V and average power consumption for one-word recognition is 25 μW at the typical clock rate of 1 MHz. Recognition performance is above 95% for both speaker-dependent and multi-speaker small vocabulary tasks. The proposed speech recognition megacell is well suited to be used as building block for portable single-battery driven systems with command-oriented vocal interfaces

Keywords

CMOS digital integrated circuits; digital signal processing chips; speech recognition; speech recognition equipment; 0.35 micron; 0.8 to 1 V; 1 MHz; 25 muW; Si; Si megacell; five-metal standard-cell CMOS technology; portable systems; single-chip voice-controlled systems; speech recognition megacell; speech recognizer; CMOS technology; Energy consumption; Microelectronics; Research and development; Signal processing; Spatial databases; Speech processing; Speech recognition; Strontium; User interfaces;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998

Conference_Location

Santa Clara, CA

Print_ISBN

0-7803-4292-5

Type

conf

DOI

10.1109/CICC.1998.694923

Filename

694923