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APPARATUS AND METHOD FOR DECIDING ADAPTIVE NOISE LEVEL FOR FREQUENCY EXTENSION
APPARATUS AND METHOD FOR DECIDING ADAPTIVE NOISE LEVEL FOR FREQUENCY EXTENSION
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机译:确定频率扩展的自适应噪声水平的装置和方法
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摘要
An apparatus and method for deciding an adaptive noise level for bandwidth extension are provided. The apparatus includes a noise level decider for deciding a high-band noise level for bandwidth extension according to tonality of an input signal, a pitch frequency analyzer for detecting a pitch frequency of the input signal and analyzing correlation between the detected pitch frequency and a frequency channel, and a noise level controller for adaptively controlling the decided high-band noise level based on the analyzed correlation of the pitch frequency and the frequency channel.
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