14. The method of claim 9 further comprising calculating a score vector based on the convolving of the sparse set of phonetic impulses with ensemble of filters.
14. The method of claim 9 further comprising calculating a score vector based on the convolving of the sparse set of phonetic impulses with ensemble of filters. 15. The method of claim 14 wherein step e) includes identifying keywords within the signal including speech based on the score vectors.