3. The system of claim 1 , wherein the performing a perceptual filter bank analysis includes estimating speech energy and noise energy in one or more frequency bands along a Bark frequency scale.
3. The system of claim 1 , wherein the performing a perceptual filter bank analysis includes estimating speech energy and noise energy in one or more frequency bands along a Bark frequency scale. 4. The system of claim 3 , further comprising suppressing background noise during the perceptual filter bank analysis, by discarding filterbanks having a ratio of speech energy to noise energy that do not exceed a threshold of vocalization.