Patent ID: 7342944
Filing Date: 2008-03-11
Classification: G10L

Abstract:
1. Method for decoding a coded digital audio signal which is arranged in frames containing headers, where the header in a frame contains a respective information item regarding whether this frame has a standard length or a length which differs therefrom for some of the frames, and where the frames contain a respective sync word, comprising the following steps: determining the approximate start of the next frame using the following formula: where L is equal to the length of the frames, N is equal to the number of samples per frame, R is equal to the total data rate, fs is equal to the sampling frequency, SL is equal to the stipulated subunit for indicating the frame length: rounding L down to the next integer of subunits SL: establishing, for the subsequent frame, whether the expected sync word for this frame appears; if the expected sync word for this frame appears, decoding this subsequent frame without taking into account the length-variation information; if the expected sync word for this frame does not appear, starting the decoding of this subsequent frame one subunit later without taking into account the length-variation information, wherein the steps are performed without storing or evaluating the length-variation information regarding the respective frame length.