Post-Quantization Gain Correction in Audio Coding
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Accused Products
Abstract
A gain adjustment apparatus (60) for use in decoding of audio that has been encoded with separate gain and shape representations includes an accuracy meter (62) configured to estimate an accuracy measure (A(b)) of the shape representation (Ñ(b)), and to determine a gain correction (gc(b)) based on the estimated accuracy measure (A(b)). It also includes an envelope adjuster (64) configured to adjust the gain representation (Ê(b)) based on the determined gain correction.
49 Citations
55 Claims
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1-28. -28. (canceled)
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29. A gain adjustment method in decoding of audio that has been encoded with separate gain and shape representations, said method including the steps of:
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estimating an accuracy measure of the shape representation; determining a gain correction based on the estimated accuracy measure; and adjusting the gain representation based on the determined gain correction. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A gain adjustment apparatus for use in decoding of audio that has been encoded with separate gain and shape representations, said apparatus including:
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an accuracy meter configured to estimate an accuracy measure of the shape representation, and to determine a gain correction based on the estimated accuracy measure; and an envelope adjuster configured to adjust the gain representation based on the determined gain correction. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification