Method for concatenating frames in communication system

摘要

A method for concatenating a first frame of samples and a subsequent second frame of samples, the method comprising applying a phase filter adapted to minimizing a discontinuity at a boundary between the first and second frames of samples.

主权项

1. A method for concatenating a first frame of samples and a subsequent second frame of samples in a digitized audio signal in a receiver, the method comprising:
receiving the signal comprising the first frame of samples and the subsequent second frame of samples; generating concealment samples from the subsequent second frame of samples of the digitized audio signal; placing the concealment samples in the signal such that the second frame follows the concealment samples; initializing a parametric all pass filter in the receiver based on said concealment samples, thereby initializing filter coefficients of the parametric all pass filter; and concurrently applying the parametric all pass filter to at least part of samples in at least two consecutive frames, so as to minimize a discontinuity at a boundary between the first and second frames of samples.