Patent ID: 7289951
Filing Date: 2007-10-30
Classification: G10L

Abstract:
1. A method for coding an audio signal comprising at least the following: examining a part of the audio signal to be coded to find another part of the audio signal which substantially corresponds to the part of the audio signal to be coded, producing a set of predicted signals on the basis of the substantially corresponding part of the audio signal using a set of pitch predictor orders, determining a coding efficiency for at least two of said predicted signals by using information indicative of said part of the audio signal to be coded, using the determined coding efficiency to select a coding method for the part of the audio signal to be coded, and using the determined coding efficiency to select a pitch predictor order for the selected coding method by comparing the coding efficiencies determined for said at least two predicted signals and selecting the pitch predictor order which produces the highest coding efficiency, when the audio signal is coded on the basis of a predicted signal in the selected coding method.