Patent ID: 9361900
Filing Date: 2016-06-07
CPC Classification: G10L

Claim Text:
1. An encoding device comprising: circuitry configured to: divide a frequency band of an input signal and generate a first sub-band signal of a first sub-band on a high frequency side of the input signal; calculate first sub-band power of the first sub-band signal based on the first sub-band signal; carry out an operation to weight more the first sub-band power having larger power, and calculate second sub-band power of a second sub-band signal including a number of the continuous first sub-bands by raising a mean value of the first sub-band power raised by the exponent of m by the exponent of 1/m; generate data to obtain, by estimating, a high frequency signal of the input signal based on the second sub-band power; encode a low frequency signal of the input signal to generate low frequency encoded data; and multiplex the data and the low frequency encoded data to generate an output code string.