Facility for simultaneously outputting both a mixed digital audio signal and an unmixed digital audio signal multiple concurrently received streams of digital audio data
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United States of America Patent
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Mar 30, 2004
Grant Date -
N/A
app pub date -
Mar 13, 2000
filing date -
Mar 13, 2000
priority date (Note) -
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Abstract
A processing facility is provided for simultaneously receiving multiple streams of digital audio data and based thereon concurrently outputting both an unmixed digital audio signal and a mixed digital audio signal. The processing facility can be implemented, for example, within an audio decoder of a set top box. The facility includes receiving a first stream of digital audio data and a second stream of digital audio data, and outputting the first stream of digital audio data as an unmixed digital audio signal. Simultaneous therewith, the first stream of digital audio data and the second stream of digital audio data are digitally mixed and outputted as a mixed digital audio signal. If necessary, the second stream of digital audio data is redigitized based on a sample frequency of the first stream of digital audio data, and either or both the first stream and second stream of digital audio data are decoded prior to mixing.
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