NON-CAUSAL POSTFILTER
First Claim
1. A decoder arrangement, comprising:
- a receiver input for parameters of frame-based coded signals;
a decoder connected to said receiver input, arranged to provide frames of decoded audio signals based on said parameters;
a postfilter connected to an output of said decoder and arranged to provide an output signal based on said frames of decoded audio signals;
an output for said output signal;
wherein at least one of said receiver input and said decoder is arranged to establish a time difference between the occasion when parameters of a first frame is available at said receiver input and the occasion when a decoded audio signal of said first frame is available at said output of said decoder, which time difference corresponds to at least one frame;
wherein said postfilter is connected to said receiver input; and
,wherein said postfilter is arranged to provide a filtering of said frames of decoded audio signals into an output signal in response to said parameters of a respective subsequent frame.
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Accused Products
Abstract
A decoder arrangement comprising a receiver input for parameters of frame-based coded signals and a decoder arranged to provide frames of decoded audio signals based on the parameters. The receiver input and/or the decoder is arranged to establish a time difference between the occasion when parameters of a first frame is available at the receiver input and the occasion when a decoded audio signal of the first frame is available at an output of the decoder, which time difference corresponds to at least one frame. A postfilter is connected to the output of the decoder and to the receiver input. The postfilter is arranged to provide a filtering of the frames of decoded audio signals into an output signal in response to parameters of a respective subsequent frame.
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Citations
20 Claims
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1. A decoder arrangement, comprising:
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a receiver input for parameters of frame-based coded signals; a decoder connected to said receiver input, arranged to provide frames of decoded audio signals based on said parameters; a postfilter connected to an output of said decoder and arranged to provide an output signal based on said frames of decoded audio signals; an output for said output signal; wherein at least one of said receiver input and said decoder is arranged to establish a time difference between the occasion when parameters of a first frame is available at said receiver input and the occasion when a decoded audio signal of said first frame is available at said output of said decoder, which time difference corresponds to at least one frame; wherein said postfilter is connected to said receiver input; and
,wherein said postfilter is arranged to provide a filtering of said frames of decoded audio signals into an output signal in response to said parameters of a respective subsequent frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A decoding method, comprising the steps of:
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receiving parameters of frame-based coded signals; decoding said parameters into frames of decoded audio signals; wherein at least one of said step of receiving and said step of decoding causes a time difference between the occasion when parameters of a first frame is available after reception and the occasion when a decoded audio signal of the first frame is available after decoding, which time difference corresponds to at least one frame; postfiltering said frames of decoded audio signals into an output signal in response to said parameters of a respective subsequent frame; and outputting said output signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification