title: Exploiting jump-resonance hysteresis in silicon auditory front-ends for extracting speaker discriminative formant trajectories.
abstract: Jump-resonance is a phenomenon observed in non-linear circuits where the amplitude of the output signal exhibits an abrupt jump when the frequency of the input signal is varied. For [Formula: see text] filters used in the design of analog auditory front-ends (AFEs), jump-resonance is generally considered to be undesirable and several techniques have been proposed in literature to avoid or alleviate this artifact. In this paper we explore the use of jump-resonance based hysteresis in [Formula: see text] band-pass filters for encoding speech formant trajectories. Using prototypes of silicon AFEs fabricated in a 0.5 μm CMOS process, we demonstrate the benefits of the proposed approach for extracting speaker discriminative features. These benefits are validated using speaker recognition experiments where consistent improvements in equal-error-rates (EERs) are achieved using the jump-resonance based features as compared to conventional features.
authors.affiliation: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48823 USA. aonokenj@egr.msu.edu
authors.forename: Kenji
authors.initials: K
authors.lastname: Aono
authors.forename: Ravi K
authors.initials: RK
authors.lastname: Shaga
authors.forename: Shantanu
authors.initials: S
authors.lastname: Chakrabartty
mesh_terms: D016477:Artifacts; D005260:Female; D006801:Humans; D008297:Male; D017711:Nonlinear Dynamics; D011336:Probability; D012815:Signal Processing, Computer-Assisted; D012825:Silicon / Q000737:chemistry*; D013018:Sound Spectrography; D013060:Speech
chemical_list: D012825:Silicon