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EFFECTIVE ATTENUATION OF PRE-ECHOS IN A DIGITAL AUDIO SIGNAL.
EFFECTIVE ATTENUATION OF PRE-ECHOS IN A DIGITAL AUDIO SIGNAL.
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机译:数字音频信号中前回声的有效衰减。
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摘要
The invention relates to a method for processing the attenuation of pre-echo in a digital audio signal decoded by transform decoding. Said method comprises the following steps: decomposition (E603) of the decoded signal into at least two sub-signals according to a pre-determined decomposition criterion; calculation (E604) of attenuation factors per sub-signal and per sample of a previously determined pre-echo zone; attenuation (E605) of pre-echo in the pre-echo zone of each of the sub-signals by applying attenuation factors to the sub-signals; and production (E606) of the attenuated signal by addition of the attenuated sub-signals. The invention also relates to a processing device implementing the steps of the described method, and to a decoder comprising such a device.
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