Patent ID: 7292902
Filing Date: 2007-11-06
Classification: G10H,G11B

Abstract:
1. A method for processing one or more ordered sequences of PCM audio frames, comprising appending to the beginning of frames, a segment of PCM audio that is substantially a replica of PCM audio in the end of the preceding frame in an ordered sequence, or, to the end of frames, a segment of PCM audio that is substantially a replica of PCM audio in the beginning of the following frame in an ordered sequence, whereby modified frames are produced, maintaining for the modified frames a sequential order that is the same as the order of one of said one or more ordered sequences of the PCM audio frames or assigning a further sequential order to the modified frames, which sequential order is different from the order of one of said one or more ordered sequences of PCM audio frames, whereby the further sequential order has at least one discontinuity in its order with respect to the order of one of said one or more ordered sequences of PCM audio frames, fading up the PCM audio appended to the beginning of the modified frame following a discontinuity and fading down the PCM audio in the end of the modified frame preceding a discontinuity when segments are appended to the beginning of frames or fading down the PCM audio appended to the end of the modified frame preceding a discontinuity and fading up the PCM audio in the beginning of the modified frame following a discontinuity when segments are appended to the end of frames, overlapping and additively combining the faded-up and faded-down PCM audio preceding and following a discontinuity in the sequence of faded-up and faded-down modified frames, and removing the segment of PCM audio appended to a modified frame in sequential pairs of modified frames and joining the resulting PCM audio frames when the sequential pair of modified frames does not contain a discontinuity following or preceding the appendage, whereby a further ordered sequence of PCM audio frames is provided having the same order as one of said one or more ordered sequences of PCM audio frames or having one or more discontinuities between sequences of PCM audio frames, each of said sequences having the same order as one of said one or more ordered sequences of PCM audio frames or a portion thereof, discontinuities having an associated PCM audio crossfaded portion where said faded-up and faded-down PCM audio is overlapped and combined.