PLP$^2$: Autoregressive modeling of auditory-like 2-D spectro-temporal patterns

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, PLP$^2$ uses all-pole modeling in both time and frequency domains to estimate peaks of a two-dimensional spectro-temporal pattern, motivated by considerations of the auditory system.


Year:
2004
Publisher:
IDIAP
Keywords:
Note:
Accepted for publication in the Workshop on Statistical and Perceptual Audio Processing (SAPA) 2004
Laboratories:




 Record created 2006-03-10, last modified 2018-01-27

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