Title :
A 100-channel analog CMOS auditory filter bank for speech recognition
Author_Institution :
Centre Suisse d´´Electronique et de Microtechnique SA, Neuchatel, Switzerland
Abstract :
An ASIC emulates the inner ear as a bank of 100 exponentially distributed asymmetric band-pass filters that roll off at up to 450dB/dec and have individually tunable Q-factors. The output is encoded into an auditory-nerve-like pulsed format on a digital port. The chip is integrated in a 0.5μm process and consumes 2.6mW at 3.3V.
Keywords :
CMOS analogue integrated circuits; application specific integrated circuits; band-pass filters; channel bank filters; circuit tuning; exponential distribution; speech recognition; 0.5 micron; 2.6 mW; 3.3 V; ASIC; analog CMOS auditory filter bank; auditory-nerve-like pulsed format; digital port; exponentially distributed asymmetric band-pass filters; individually tunable Q-factors; inner ear; speech recognition; Auditory system; Cutoff frequency; Filter bank; Humans; MOSFETs; Q factor; Resonator filters; Speech recognition; Voltage; Working environment noise;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493908
