Method and apparatus for sinusoidal encoding and decoding

An audio signal decoding method comprising:

• retrieving encoded data,
• reconstruction from the encoded data digital transform coefficients of trajectories' segments,
• subjecting the encoded data digital transform coefficients to an inverse transform and performing reconstruction of the trajectories' segments,
• generating sinusoidal components, each having amplitude and frequency associated with the particular trajectory, and
• reconstructing the audio signal by summation of the sinusoidal components,
• wherein segments of different trajectories starting within a particular time are grouped into groups of segments (GOS), and partitioning of trajectories into segments is synchronized with the endpoints of a group of segments.

An audio signal decoding apparatus comprising:

• a processor, and
• a memory coupled to the processor, having processor-executable instructions stored thereon, which when executed cause the processor to implement operations including:
• retrieve encoded data,
• reconstructing from the encoded data digital transform coefficients of trajectories' segments,
• subjecting the coefficients to an inverse transform and performing reconstruction of the trajectories' segments,
• generating sinusoidal components, each having amplitude and frequency associated with the particular trajectory, and
• reconstructing the audio signal by summation of the sinusoidal components,
• wherein segments of different trajectories starting within a particular time are grouped into groups of segments (GOS), and partitioning of trajectories into segments is synchronized with the endpoints of a group of segments.