Acoustic signal encoding device, acoustic signal decoding device, terminal device, base station device, acoustic signal coding method and decoding method

摘要

To achieve efficient vector quantization method in AVQ coding. Acoustic signal encoding apparatus (100), a sub-band obtained by dividing the spectrum of the frequency domain based on at least one indicator of the energy or peak resistance, auditorily important plurality otherwise the first category subband first subband classification unit that classifies into two categories subbands (105), SBP from each of the first category subband, and generates and output the SBP-AVQ vector gather the maximum peak, for outputting a peak position information of the maximum peak An AVQ vector generation unit (106), a bit allocation unit (104) allocating bits for AVQ coding to the SBP-AVQ vector and the vectors of the second category subband, the SBP-AVQ vector and the second category subband AVQ encoding unit for AVQ encoding vector (107), Obtain.