Systems technologies for silicon auditory models
Lazzaro, J.
Wawrzynek, J.
Kramer, A.
California Univ., Berkeley, CA;
This paper appears in: Micro, IEEE
Publication Date: Jun 1994
Volume: 14,
Issue: 3
On page(s): 7-15
ISSN: 0272-1732
References Cited: 12
CODEN: IEMIDZ
INSPEC Accession Number: 4712072
Digital Object Identifier: 10.1109/40.285219
Current Version Published: 2002-08-06
Abstract
Presents a low-power analog integrated circuit which implements a
biologically inspired algorithm for the spectral analysis of sound. The
chip features an efficient interface to digital systems; preserving
analog processing's low-power, high-density advantages requires careful
attention to interface issues. To send the spectral representation off
chip, it generates a sparse coding of the output spectrum, and
communicates the code as an asynchronous stream of events. We store
parameters for the spectral analysis algorithm as charge on floating
nodes, and support the modification of these parameters via
Fowler-Nordheim tunneling, under the control of a digital interface. A
prototype system uses this chip as a preprocessor
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