| 摘要 |
<p>An automatic speech recognizer (40) only responsive to acoustic speech utterances is activated only in response to acoustic energy having a spectrum associated with the speech utterances and at least one facial characteristic associated with the speech utterances. In one embodiment, a speaker must be looking directly into a video camera (12) and the voices and facial characteristics of plural speakers must be matched to enable activation of the automatic speech recognizer.</p> |
