CONF marios-rr-04-60b/IDIAP PLP$^2$: Autoregressive modeling of auditory-like 2-D spectro-temporal patterns Athineos, Marios Hermansky, Hynek Ellis, Daniel P. W. EXTERNAL http://publications.idiap.ch/attachments/reports/2004/rr04-60.pdf PUBLIC http://publications.idiap.ch/index.php/publications/showcite/marios-rr-04-60 Related documents 2004 IDIAP RR 04-60 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. REPORT marios-rr-04-60/IDIAP PLP$^2$: Autoregressive modeling of auditory-like 2-D spectro-temporal patterns Athineos, Marios Hermansky, Hynek Ellis, Daniel P. W. EXTERNAL http://publications.idiap.ch/attachments/reports/2004/rr04-60.pdf PUBLIC Idiap-RR-60-2004 2004 IDIAP Accepted for publication in the Workshop on Statistical and Perceptual Audio Processing (SAPA) 2004 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.