Articles

PLP2: Autoregressive modeling of auditory-like 2-D spectro-temporal patterns

Athineos, Marios; Hermansky, Hynek; Ellis, Daniel P. W.

The temporal trajectories of the spectral energy in auditory critical bands over 250 ms segments are approximated by an all-pole model, the time-domain dual of conventional linear prediction. This quarter-second auditory spectro-temporal pattern is further smoothed by iterative alternation of spectral and temporal all-pole modeling. Just as Perceptual Linear Prediction (PLP) uses an autoregressive model in the frequency domain to estimate peaks in an auditory-like short-term spectral slice, PLP2 uses all-pole modeling in both time and frequency domains to estimate peaks of a two-dimensional spectrotemporal pattern, motivated by considerations of the auditory system.

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Title
ISCA Tutorial and Research Workshop on Statistical and Perceptual Audio Processing, ICC Jeju, Korea, October 3, 2004
Publisher
International Speech Communication Association

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Academic Units
Electrical Engineering
Published Here
June 28, 2012