Encoding audio signals using precomputed silence
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United States of America Patent
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Nov 2, 1999
Grant Date -
N/A
app pub date -
Mar 28, 1996
filing date -
Mar 28, 1996
priority date (Note) -
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Abstract
An audio stream is analyzed to distinguish silent periods from non-silent periods and an encoded bitstream is generated for the audio stream, wherein the silent periods are represented by one or more sets of canned encoded data corresponding to representative silent periods. In a preferred embodiment, one of the sets of canned encoded data is randomly selected for each silent period. There may be different sets of silent periods corresponding to different types of silent periods, where a particular type of silent period is selected based on some characteristic of the audio stream (e.g., energy level of the silent periods). In addition, the sets of encoded data may be generated from actual silent periods of the audio stream.
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