Patent ID: 9659573
Date: 2017-05-23
CPC Classifications: G10L

Claim:
1. A decoder comprising: a demultiplexing unit that demultiplexes input encoded data to at least low band encoded data and coefficient information; a low band decoding unit that decodes the low band encoded data to produce low band signals; a selection unit that selects coefficients based on the coefficient information for the production of high band signals; a high band sub-band power calculation unit that calculates high band sub-band powers of high band sub-band signals constituting the high signals based on low band sub-band signals constituting the low band signals and the coefficients, wherein the coefficient for a sub-band having a highest frequency is used for at least another sub-band in the high band sub-band power calculation unit; and a high band signal production unit that produces the high band signals based on the high band-sub-band powers and the low band sub-band signals.