ENCODING/DECODING METHOD FOR AUDIO SIGNALS USING ADAPTIVE SINE WAVE PULSE CODING AND APPARATUS THEREOF

摘要

The present invention relates to an encoding/decoding method for audio signals using adaptive sine wave pulse coding and an apparatus thereof. An encoding method for audio signals according to the embodiment of the present invention comprises: a step of dividing an audio signal into a plurality of sub bands; a step of operating energy of each sub band separately; a step of selecting the sub bands having relatively greater energy among all sub bands as a predetermined number; and a step of performing sine wave pulse coding for the selected sub bands. The present invention has an effect of efficiently increasing the quality of a synthesis signal by applying sine wave pulse coding in consideration of the amount of energy of each sub band of the synthesis signal.