SIGNAL ENERGY-BASED NONUNIFORM TIME DOMAIN AUDIO SIGNAL PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for time scale compression of audio signals capable of obtaining high quality reproducing audio even at high compressibility.;SOLUTION: The method comprises a step of receiving frame data corresponding to an input audio signal; a step of segmenting the received data into a plurality of segments; a step of calculating an energy related value related to energy of the frame data; a step of calculating an estimated peak energy value for the frame; a step of determining an energy threshold based on the peak energy estimate of the frame; and a step of comparing the energy related value with the energy threshold to control compression in the time domain of audio data.;COPYRIGHT: (C)2004,JPO