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The all-pole gammatone filter and auditory models (1996)
| Venue: | Acustica |
| Citations: | 9 - 3 self |
BibTeX
@ARTICLE{Lyon96theall-pole,
author = {Richard F. Lyon},
title = {The all-pole gammatone filter and auditory models},
journal = {Acustica},
year = {1996},
pages = {90}
}
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Abstract
deviation g=(f−f c)/fc dB ABSTRACT: The All-Pole Gammatone Filter (APGF) is defined by discarding the zeros from a pole-zero decomposition of the Gamma-Tone Filter (GTF) that was popularized in auditory modeling by Johannesma, de Boer, Patterson, and others. Equivalently, the order-N APGF is the Nth power of a filter with a complex-conjugate pair of poles; the GTF has this same set of poles, but in addition has “spurious ” zeros on the real axis that complicate its description and behavior. The One-Zero Gammatone Filter (OZGF) is also introduced, by differentiating, or adding one zero at DC to, the APGF. Order-3 GTF and OZGF were originally used by Flanagan in 1960 to model Basilar Membrane motion. The APGF does not have the simple time-domain description of the GTF (a gamma distribution times a tone), but is simpler and more well-behaved in other ways, and provides a more robust foundation for modeling and analyzing a variety of auditory data that involve filter
Keyphrases
all-pole gammatone filter auditory model complex-conjugate pair pole-zero decomposition simple time-domain description fc db abstract basilar membrane motion one-zero gammatone filter order-3 gtf auditory modeling nth power robust foundation spurious zero order-n apgf gamma-tone filter gamma distribution real axis auditory data
