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AssigneeSRI International
InventorsVictor Abrash, Federico Cesari, Horacio Franco, Christopher George, Jing Zheng
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The present invention relates to a method and apparatus for obtaining complete speech signals for speech recognition applications. In one embodiment, the method continuously records an audio stream comprising a sequence of frames to a circular buffer. When a user command to commence or terminate speech recognition is received, the method obtains a number of frames of the audio stream occurring before or after the user command in order to identify an augmented audio signal for speech recognition processing. In further embodiments, the method analyzes the augmented audio signal in order to locate starting and ending speech endpoints that bound at least a portion of speech to be processed for recognition. At least one of the speech endpoints is located using a Hidden Markov Model.
A method for recognizing speech in an audio stream comprising a sequence of audio frames, the method comprising the steps of:
A computer readable medium containing an executable program for recognizing speech in an audio stream comprising a sequence of audio frames, where the program performs the steps of:
Apparatus for recognizing speech in an audio stream comprising a sequence of audio frames, the method comprising the steps of:
A method for preparing an audio signal comprising a sequence of frames for speech recognition, the method comprising the steps of:
A computer readable medium containing an executable program for preparing an audio signal comprising a sequence of frames for speech recognition, where the program performs the steps of:
Apparatus for preparing an audio signal comprising a sequence of frames for speech recognition, comprising:
Dependencies are inferred from the claim text.