27. A system that identifies a beginning and an end of a speech segment comprising: an end-pointer comprising a processor that analyzes a dynamic aspect of an audio stream to determine the beginning and the end of the speech segment; and a high frequency consonant detector that marks the end of the speech segment, where the high frequency consonant detector calculates a difference between a signal-to-noise ratio in a high frequency band of the audio stream and a signal-to-noise ratio in a low frequency band of the audio stream, and where the high frequency consonant detector converts the difference between the signal-to-noise ratio in the high frequency band and the signal-to-noise ratio in the low frequency band into a probability value that predicts a likelihood that a high frequency consonant exists in a frame of the audio stream; where the beginning of the speech segment and the end of the speech segment represent boundaries between speech and non-speech portions of the audio stream, and where the end-pointer identifies the beginning of the audio speech segment or the end of the audio speech segment based on an output of the high frequency consonant detector.
27. A system that identifies a beginning and an end of a speech segment comprising: an end-pointer comprising a processor that analyzes a dynamic aspect of an audio stream to determine the beginning and the end of the speech segment; and a high frequency consonant detector that marks the end of the speech segment, where the high frequency consonant detector calculates a difference between a signal-to-noise ratio in a high frequency band of the audio stream and a signal-to-noise ratio in a low frequency band of the audio stream, and where the high frequency consonant detector converts the difference between the signal-to-noise ratio in the high frequency band and the signal-to-noise ratio in the low frequency band into a probability value that predicts a likelihood that a high frequency consonant exists in a frame of the audio stream; where the beginning of the speech segment and the end of the speech segment represent boundaries between speech and non-speech portions of the audio stream, and where the end-pointer identifies the beginning of the audio speech segment or the end of the audio speech segment based on an output of the high frequency consonant detector. 30. The system of claim 27 , where the dynamic aspect of the audio stream comprises a level of background noise in the audio stream.