Patent ID: 8533551

Claim:
A method of processing a DAB audio stream, the method comprising: receiving a compressed and modulated DAB audio stream comprising a plurality of audio frames, said frames comprising a header, an allocation table and a scale factor selection information portion (SCFSI) and wherein said frames are encoded with an MP2-CRC error detection code for indicating an error in said header, said allocation table and/or said SCFSI of at least one audio frame and wherein said frames are also encoded with scale factors and a DAB-CRC error detection code for indicating errors in said scale factors; demodulating the DAB stream; and processing the demodulated and still compressed DAB stream responsive to the DAB-CRC of said at least one audio frame of the plurality of audio frames using said MP2-CRC error detection code and determining if an error is present in said header of said at least one audio frame by polling headers of a plurality of said frames to determine a correct header and comparing the header of said at least one audio frame to said correct header.