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Acoustic signal encoding device, acoustic signal decoding device, terminal device, base station device, acoustic signal coding method and decoding method
Acoustic signal encoding device, acoustic signal decoding device, terminal device, base station device, acoustic signal coding method and decoding method
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机译:声音信号编码装置,声音信号解码装置,终端装置,基站装置,声音信号编码方法及解码方法
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摘要
An acoustic signal coding apparatus includes a subband classifier that classifies subbands obtained by dividing a frequency-domain spectrum into a plurality of perceptually important first-category subbands and the other subbands referred to as second-category subbands according to at least one of measures in terms of energy and peak property, a subband peak-algebraic vector quantization (SBP-AVQ) vector generator that generates an SBP-AVQ vector by collecting a maximum peak from each first-category subband, outputs the generated SBP-AVQ vector, and outputs peak position information indicating the positions of the maximum peaks, a bit distributor that distributes bits for AVQ coding to the SBP-AVQ vector and the second-category subband vector, and an AVQ coder that performs AVQ coding on the SBP-AVQ vector and the second-category subband vector.
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