Patent ID: 8812927
Filing Date: 2014-08-19
Classification: G10L

Abstract:
1. A decoding device comprising: a decoding unit which decodes encoded data obtained after audio signals of adjacent blocks are overlapped, undergo orthogonal transformation, and encoded; an inverse orthogonal transformation unit which performs inverse orthogonal transformation for the encoded data that has been decoded by the decoding unit and obtains a time series waveform element in a unit of block; a correlation calculation unit which obtains a correlation between a time series waveform element of a block arranged immediately before an error block which is a block in which an error has occurred during decoding by the decoding unit and a time series waveform element of a block arranged a predetermined number of blocks before the block; a cycle calculation unit which obtains a basic cycle of a block unit of the error block based on the correlation obtained by the correlation calculation unit; and a generation unit which generates a substitute signal of the time series waveform element of the error block using the time series waveform element of the block arranged forward from the error block by a basic cycle of the block unit based on the basic cycle obtained by the cycle calculation unit.