Acoustic signal encoding device, acoustic signal decoding device, acoustic signal coded method and acoustic signal coding/decoding method

摘要

Acoustic signal encoding device (100) including: from the temporal frequency converter unit (101) of input signal output subband spectrum；Sub belt energy quantifying unit (102)；Analyze the tonality calculating unit (103) of the tonality of subband spectrum；Analysis result based on tonality and quantization sub belt energy, select the 2nd subband quantified by the 2nd quantifying unit, and determine the Bit Distribution Unit (104) to the 1st bit number that the 1st subband quantified by the 1st quantifying unit distributes；The bit being made up of the 1st bit number is used to carry out the 1st quantifying unit (106) encoded；Pitch filter is used to carry out the 2nd quantifying unit (107) encoded；And Multiplexing Unit (108).