Patent ID: 6101475
Filing Date: 2000-08-08
Classification: H04B

Abstract:
A method for cascaded coding and decoding of audio data comprising the steps of:coding audio data, in each of a plurality of cascaded coding-decoding (codec) stages, so that for a block of audio data with a certain number of time input data, the spectral components of the short-time spectrum associated with this block are formed and so that a coded signal is formed on the basis of the spectral components of the block and a psycho-acoustic model; anddecoding the coded block of audio data, in each of a plurality of cascaded codec stages, so that the coded signal is decoded to produce time output data;wherein at the coding step in one of the codec stages the time input data are processed such that the coded block of audio data includes an identification code marking the start of the coded block of audio data, the identification code not being removed by the decoding step of this codec stage, and at the coding step in at least one of the subsequent codec stages in the cascade, the division of the input data into blocks of audio data to be coded is performed on the basis of the identification code.