TY - GEN
T1 - Exploiting jump-resonance hysteresis in silicon cochlea for formant trajectory encoding
AU - Aono, Kenji
AU - Shaga, Ravi K.
AU - Chakrabartty, Shantanu
PY - 2012
Y1 - 2012
N2 - Jump resonance is a phenomenon observed in nonlinear circuits where the output exhibits abrupt jumps when the frequency of the input signal is varied. In literature, several methods have been proposed for modeling and predicting of jump-resonance, which has led to circuit designs that are optimized to avoid this non-linear phenomenon. In this paper we propose exploiting jump-resonance based hystresis, observed in silicon cochlea, for encoding frequency and specifically formant trajectories in speech signal. Using experimental prototypes fabricated in a 0.5μm CMOS process, we show that the features extracted from a jump-resonance based silicon cochlea are more discriminative for speech based biometrics as compared to features extracted from a conventional silicon cochlea.
AB - Jump resonance is a phenomenon observed in nonlinear circuits where the output exhibits abrupt jumps when the frequency of the input signal is varied. In literature, several methods have been proposed for modeling and predicting of jump-resonance, which has led to circuit designs that are optimized to avoid this non-linear phenomenon. In this paper we propose exploiting jump-resonance based hystresis, observed in silicon cochlea, for encoding frequency and specifically formant trajectories in speech signal. Using experimental prototypes fabricated in a 0.5μm CMOS process, we show that the features extracted from a jump-resonance based silicon cochlea are more discriminative for speech based biometrics as compared to features extracted from a conventional silicon cochlea.
KW - formant trajectory encoding
KW - G -C filter
KW - jump-resonance
KW - silicon cochlea
KW - speaker recognition
UR - http://www.scopus.com/inward/record.url?scp=84867317864&partnerID=8YFLogxK
U2 - 10.1109/MWSCAS.2012.6291963
DO - 10.1109/MWSCAS.2012.6291963
M3 - Conference contribution
AN - SCOPUS:84867317864
SN - 9781467325264
T3 - Midwest Symposium on Circuits and Systems
SP - 85
EP - 88
BT - 2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
T2 - 2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
Y2 - 5 August 2012 through 8 August 2012
ER -