| 摘要 |
The method creates an audio stream comprising tracks of sinusoidal components linked across a plurality of sequential time segments. Segments in each track are weighted with a normal window (WI, W 2 , W 3 ), and consecutive segments have a normal period of overlap ( 0 ) of their trailing edges and leading edges. Segments in which a transient 5 component is determined are weighted with a first modified window (WIm) having a modified trailing edge, and the following segment in the track is weighted with a second modified window (W 2 m) having a modified leading edge, so that the modified trailing edge and the modified leading edge have a modified period of overlap ( 0 m) that comprises the transient component and that is shorter than the normal period of overlap ( 0 ), and wherein the audio stream includes sinusoidal codes representing the frequency and the transient. According to the invention, the modified period of overlap ( 0 m) depends on the frequency value (f).
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