Dynamic Time Warping (DTW) for Single Word and Sentence ...
Dynamic Time Warping (DTW) for Single Word and Sentence ...
Dynamic Time Warping (DTW) for Single Word and Sentence ...
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<strong>DTW</strong> <strong>for</strong> <strong>Single</strong> <strong>Word</strong> <strong>and</strong> <strong>Sentence</strong> Recognizers<br />
Speech Detection<br />
Solution to Problem (1) When does speech begin?<br />
A: Push-to-talk scenario: only listen when user pushes button<br />
B: Always on scenario: always listen, only consider speech regions<br />
Select Speech Regions:<br />
Use SNR: works well if SNR > 30dB, otherwise problematic<br />
Compute signal power:<br />
p[i..j] = k=i..j s[k]2 , then apply a threshold t to detect speech<br />
t<br />
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