Patent ID: 8073050
Filing Date: 2011-12-06
Classification: G10L

Abstract:
1. An encoding device that creates first code data by encoding a low-frequency component of a signal by a first encoding method and second code data by encoding a high-frequency component of the signal by a second encoding method, and multiplexes the first code data and the second code data to output a multiplexed code data, the encoding device comprising: a calculating unit that divides the high-frequency component of the signal to be encoded by the second encoding method into a high-frequency band and a low-frequency band, and calculates a high-frequency power value that indicates a power value of the signal in the high-frequency band, and a low-frequency power value that indicates a power value of the signal in the low-frequency band; and a correcting unit that compares the high-frequency power value and the low-frequency power value, and corrects the power value of the high-frequency component of the signal to be encoded by the second encoding method based on a result of comparison.