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A hybrid scheme for encoding audio signal using hidden Markov models of waveforms (1304.5846v1)
Published 22 Apr 2013 in math.ST, cs.IT, math.IT, and stat.TH
Abstract: This paper reports on recent results related to audiophonic signals encoding using time-scale and time-frequency transform. More precisely, non-linear, structured approximations for tonal and transient components using local cosine and wavelet bases will be described, yielding expansions of audio signals in the form tonal + transient + residual. We describe a general formulation involving hidden Markov models, together with corresponding rate estimates. Estimators for the balance transient/tonal are also discussed.