On Multi-Scale Piecewise Stationary Spectral Analysis of Speech Signals for Robust ASR Date 20 th September 2004


A £xed scale (typically 25ms) short time spectral analysis of speech signals, which are inherently multi-scale in nature [7] (typically vowels last for 40-80ms while stops last for 10-20ms), is clearly sub-optimal for time-frequency resolution. In this work, we detect piecewise quasi-stationary speech segments based on the likelihood of that segment which… (More)

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