Patent ID: 9406312
Filing Date: 2016-08-02
CPC Classification: G10L

Claim Text:
1. A signal processing apparatus comprising: a demultiplexing circuit configured to demultiplex input encoded data corresponding to a section to be processed including a plurality of frames into high band encoded data and low band encoded data, wherein the high band encoded data includes segment information for segments of the section to be processed, wherein each segment includes a plurality of frames associated with a same coefficient, and coefficient information for the plurality of frames in the section to be processed; a low band decoding circuit configured to decode the low band encoded data to produce a low band signal; a selection circuit configured to select a coefficient of a frame to be processed from a plurality of coefficients specified in the coefficient information included in the high band encoded data; a high band sub-band power calculation configured to calculate a high band sub-band power of a high band sub-band signal of each sub-band constituting the high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient; and a high band signal production circuit configured to produce the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.