Excavating
Patent
1996-06-07
1999-08-24
Baker, Stephen M.
Excavating
381 945, 704201, H04L 100
Patent
active
059433477
ABSTRACT:
A method for concealing errors during transmission of audio data packets. Initially, the fundamental pitch period of a data packet is determined. A value indicating this fundamental pitch period is added as a preamble to the data packet prior to its transmission. When a data packet is received, it is checked for dropped or corrupted data. If there are any errors, the fundamental pitch period is replicated with the data from the previous frame the requisite number of times and substituted in replacement thereof. The audio is then played back so the impact of any errors is perceptually insignificant.
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Baker Stephen M.
Silicon Graphics Inc.
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