Patent ID: 8422569
Filing Date: 2013-04-16
Classification: G10L

Abstract:
1. An encoding apparatus, comprising: a band splitter that performs band split processing of an input signal, and provides a lower/middle band component lower than a first frequency and a higher band component one of equal to and higher than the first frequency; a lower band encoder that provides a lower band component by suppressing a part one of equal to and higher than a second frequency in the lower/middle band component, and provides lower band encoded information by encoding the lower band component; a middle band corrector that corrects a middle band component one of equal to and higher than the second frequency in the suppressed lower/middle band component, and provides a corrected middle band component; and a middle/higher band encoder that encodes the corrected middle band component and the higher band component, and provides middle/higher band encoded information, wherein the lower band encoder comprises: the middle band corrector provides the corrected middle band component by multiplying the spectrum by a reciprocal of a characteristic of the low-pass filter.