Patent ID: 7933417
Filing Date: 2011-04-26
Classification: G10L,H04B

Abstract:
1. A decoding device for decoding an encoded acoustic signal, comprising: a demultiplexing unit which demultiplexes the multiplexing of at least one band signal with quantization accuracy information and an encoded normalization coefficient for each band signal; a normalization coefficient decoding unit which includes a plurality of decoders and a determination unit that selects one of the plurality of decoders to decode the demultiplexed normalization coefficient based on the contents of the encoded demultiplexed normalization coefficient; at least one signal generating unit for dequantizing each band signal on the basis of the quantization accuracy information and for denormalizing the dequantized signal on the basis of one of the decoded normalization coefficients received from the normalization coefficient decoding unit, whereby an acoustic time-series signal is generated; and a combining unit which combines bands of band signals generated by the signal generating unit.