Patent ID: 7774205

Claim:
A method of compressively encoding audio signal data containing a time series of audio signal samples as a compressed data stream, the method comprising: transforming successive blocks of the audio signal data into sets of spectral coefficients; quantizing the spectral coefficients; for at least a portion of the spectral coefficients in the sets, detecting any spectral peaks out of the spectral coefficients in the portion; correlating spectral peaks detected out of the set of spectral coefficients for a current block to spectral peaks detected out of the spectral coefficients for a preceding block of the audio signal data; and encoding information to represent those of the spectral peaks for the current block that correlate to spectral peaks for the preceding block in the compressed data stream using temporal prediction coding and encoding information to represent at least some of the spectral peaks in the compressed data stream using at least one three value combination of a length of a run of zero-valued spectral coefficients and levels of two spectral coefficients following the run.