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US 2006/0149536 A1Published application
SID frame update using SID prediction error
OwnerDunling Liinventor
Life of this patent
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Abstract
In a packet-based multimedia communication system, such as ITU G.711, using linear prediction parameters to derive the linear prediction error of the codec. The linear prediction error is then used as a feature of the Silence Insertion Descriptor (SID) algorithm. Generating a SID frame by comparing linear prediction errors between frames in the input data stream to a threshold.
Claims10
A method to determine silence insertion descriptor (SID) generation in a multimedia communication system, comprising:
- calculating a first linear prediction error from a current frame of input samples in a digital multimedia communication system;
- calculating a second linear prediction error from a prior SID frame of said input samples in said system;
- determining a difference between said second linear prediction error and said first linear prediction error;
- and
- generating a SID frame as the current frame based on said difference.
2 more elements
A method to determine silence insertion descriptor (SID) generation in a multimedia communication system, comprising:
- calculating a first linear prediction error from a current frame of input samples in a digital multimedia communication system;
- calculating a second linear prediction error from a prior frame of said input samples in said system;
- determining that a difference between said second linear prediction error and said first linear prediction error is equal to or less than a threshold;
- and
- generating a SID frame based on a first background energy level of said current frame and a second background energy level of said prior frame.
2 more elements
Dependencies are inferred from the claim text.