Patent ID: 6421802
Filing Date: 2002-07-16
Classification: G10L,G11B,H04H

Abstract:
Method for concealing errors in an audio data stream, the audio data stream having audio data that include a group of spectral lines, the group of spectral lines spectrally representing a block of successive audio samples, comprising the following steps:detecting an occurrence of an error in the audio data stream, wherein audio data in the audio data stream before the occurrence of the error are intact audio data; calculating a spectral energy of a subgroup of the intact audio data, the subgroup including a plurality of spectral lines; forming a pattern for substitute spectral lines on the basis of the spectral energy calculated for the subgroup of the intact audio data, the pattern being a measure for a spectral energy of the substitute spectral lines; and creating substitute spectral lines for erroneous or missing spectral lines which correspond to the subgroup, on the basis of the pattern.