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AssigneeFrance Telecom
InventorsAbdellatif Benjelloun Touimi, Yannick Mahieux, Claude Lamblin
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At least one coded binary audio flux organized into frames is created from digital audio signals which were coded by transforming them from the time domain into the frequency domain. Transform coefficients of the signals in the frequency domain are quantized and coded according to a set of quantizers. The set is determined from a set of values extracted from the signals. The values make up selection parameters of the set of quantizers. The parameters are also present in the frames. A partial decoding state decodes then dequantizes transform coefficients produced by the coding based on a set of quantizers determined from the selection parameters contained in the frames of the coded binary audio flux or of each coded binary audio flux. The partially decoded frames are subjected to processing in the frequency domain. The thus-processed frames are then made available for use in a later utilization step.
A method of processing at least one coded binary flux organized in the form of frames created from digital audio signals which were coded by first transforming them from the time domain to the frequency domain in order to calculate transform coefficients, then quantizing and coding said transform coefficients according to a set of quantizers determined by using selection parameters extracted from said digital audio signals, said frames containing said selection parameters and the thus-coded transform coefficients, the method comprising, for the one or each audio flux:
Apparatus for processing at least one coded binary flux organized in the form of frames created from digital audio signals which were coded by first transforming them from the time domain to the frequency domain in order to calculate transform coefficients, then quantizing and coding said transform coefficients according to a set of quantizers determined by using selection parameters extracted from said digital audio signals, said frames containing said selection parameters and the thus-coded transform coefficients, the apparatus comprising, for the one or each audio flux:
Dependencies are inferred from the claim text.