Hierarchical approach for spotting keywords

The paper presents a new approach to spotting a particular sound (keyword) in an acoustic stream. The approach is based on hierarchical processing where equally-sampled posterior probabilities of phoneme classes are estimated first, followed by matched filtering that yields non-equally spaced values, one for each phoneme, indicating confidences of underlying phoneme being present. The target keyword is indicated by a particular sequence of high-confidence phonemes.


Year:
2005
Publisher:
IDIAP
Keywords:
Laboratories:




 Record created 2006-03-10, last modified 2018-03-17

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