Patent ID: 8306812
Filing Date: 2012-11-06
Classification: G10L

Abstract:
1. An audio playback speed control method, the method comprising: extracting an audio sampling frequency from an audio signal which is reproduced and receiving audio playback speed information to reproduce the audio signal; determining a length of an input frame, a length of an output frame, and a length of an overlapping region between frames, on a basis of the audio sampling frequency and the audio playback speed information; and performing different overlapping and adding methods, according to the audio playback speeds, on a basis of the length of the input frame, the length of the output frame, and the length of the overlapping region between the frames, wherein the overlapping region is created by extracting respective sample values of the input frame including a tail portion of a first frame and a head portion of a second frame, calculating an average value of the sample values using weighting values, and inserting the average value between the first frame and the second frame.