Patent ID: 8468024
Filing Date: 2013-06-18
Classification: G10L

Abstract:
1. A method of generating a frame of audio data for an audio signal from preceding audio data for the audio signal that precede the frame of audio data, the method comprising the steps of: predicting at a processor a predetermined number of data samples for the frame of audio data based on the preceding audio data, to form predicted data samples, each predicted data sample being a linear combination of a predetermined number of audio data samples immediately preceding the frame; identifying a section of the preceding audio data for use in generating the frame of audio data; and forming the audio data of the frame of audio data as a repetition of at least part of the identified section to span the frame of audio data, wherein the beginning of the frame of audio data comprises a combination of a subset of the repetition of the at least part of the identified section and the predicted data samples, wherein the subset of the at least part of the repetition of the identified section and the predicted data samples are combined by performing an overlap-add operation, and wherein the overlap-add operation comprises adding together the predicted data samples multiplied by a downward sloping ramp and the respective samples of the subset of the at least part of the repetition of the identified section multiplied by an upward sloping ramp.