Facility for simultaneously outputting both a mixed digital audio signal and an unmixed digital audio signal multiple concurrently received streams of digital audio data
First Claim
1. A method for processing digital audio data, said method comprising:
- receiving a first stream of digital audio data from a first audio source and a second stream of digital audio data from a second audio source, wherein said first audio source and said second audio source comprise separate and independent audio sources;
outputting the first stream of digital audio data as an unmixed digital audio signal;
digitally mixing the first stream of digital audio data and the second stream of digital audio data and outputting based thereon a mixed digital audio signal, wherein said mixed digital audio signal is output concurrent with output of said unmixed digital audio signal; and
resampling said second stream of digital audio data based on a sample frequency of said first stream of digital audio data when a sample frequency of said second stream differs from the sample frequency of said first stream.
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Accused Products
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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Citations
49 Claims
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1. A method for processing digital audio data, said method comprising:
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receiving a first stream of digital audio data from a first audio source and a second stream of digital audio data from a second audio source, wherein said first audio source and said second audio source comprise separate and independent audio sources;
outputting the first stream of digital audio data as an unmixed digital audio signal;
digitally mixing the first stream of digital audio data and the second stream of digital audio data and outputting based thereon a mixed digital audio signal, wherein said mixed digital audio signal is output concurrent with output of said unmixed digital audio signal; and
resampling said second stream of digital audio data based on a sample frequency of said first stream of digital audio data when a sample frequency of said second stream differs from the sample frequency of said first stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for processing digital audio data, said system comprising:
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means for receiving a first stream of digital audio data from a first audio source and a second stream of digital audio data from a second audio source, wherein said first audio source and said second audio source comprise separate and independent audio sources;
means for outputting the first stream of digital audio data as an unmixed digital audio signal;
means for digitally mixing the first stream of digital audio data and the second stream of digital audio data and outputting based thereon a mixed digital audio signal, wherein said mixed digital audio signal is output concurrent with output of said unmixed digital audio signal; and
means for resampling said second stream of digital audio data based on a sample frequency of said first stream of digital audio data when a sample frequency of said second stream differs from the sample frequency of said first stream. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A system for processing digital audio data, said system comprising:
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an audio digital signal processor adapted to receive a first stream of digital audio data from a first audio source and a second stream of digital audio data from a second audio source, wherein said first audio source and said second audio source comprise separate and independent audio sources, and output therefrom the first stream of digital audio data as an unmixed digital audio signal;
wherein the audio digital signal processor is further adapted to digitally mix the first stream of digital audio data and the second stream of digital audio data and output based thereon a mixed digital audio signal, wherein the mixed digital audio signal is output concurrent with output of the unmixed digital audio signal; and
wherein the audio digital signal processor is further adapted to resample said second stream of digital audio data based on a sample frequency of said first stream of digital audio data when a sample frequency of said second stream differs from the sample frequency of said first stream.
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34. At least one program storage device readable by a machine, tangibly embodying at least one program of instructions executable by the machine to perform a method for processing digital audio data, said method comprising:
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receiving a first stream of digital audio data from a first audio source and a second stream of digital audio data from a second audio source wherein said first audio source and said second audio source comprise separate and independent audio sources;
outputting the first stream of digital audio data as an unmixed digital audio signal;
digitally mixing the first stream of digital audio data and the second stream of digital audio data and outputting based thereon a mixed digital audio signal, wherein said mixed digital audio signal is output concurrent with output of said unmixed digital audio signal; and
resampling said second stream of digital audio data based on a sample frequency of said first stream of digital audio data when a sample frequency of said second stream differs from the sample frequency of said first stream. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification