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Lossless Transform Coding of Audio Signals
Citation key 0843Purat1997
Author Marcus Purat and Tilman Liebchen and Peter Noll
Title of Book 102nd AES Convention
Year 1997
Address München
Note Preprint No. 4414
Abstract Recent papers have proposed linear prediction as a useful method for lossless audio coding. Transform coding, however, hasn’t been investigated so far, although it seems to be more adapted to the harmonic structure of most audio signals. In this paper we present first results on lossless transform coding of CD-quality audio data. One main aspect lies on a suitable quantization method to obtain perfect reconstruction. Using a codebook with different entropy codes for the transform coefficients we achieve bitrates, slightly better then those obtained by the lossless linear prediction schemes mentioned above.
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