| Paper: | SS-11.5 | ||
| Session: | Lossless Coding Techniques for Audio Signals | ||
| Time: | Friday, May 21, 14:20 - 14:40 | ||
| Presentation: | Special Session Lecture | ||
| Topic: | Special Sessions: Lossless Coding Technologies for Audio Signals | ||
| Title: | LOSSLESS COMPRESSION OF ONE-BIT AUDIO | ||
| Authors: | Erwin Janssen; Philips Research Laboratories | ||
| Eric Knapen; Philips Digital Systems Laboratories | |||
| Derk Reefman; Philips Research Laboratories | |||
| Fons Bruekers; Philips Research Laboratories | |||
| Abstract: | In this paper, the coding technique that is used by the Super Audio CD system to losslessly compress 64 times oversampled one-bit audio data is introduced. The individual steps in the encoding and decoding process are detailed. The performance of the lossless compression algorithm, as function of various genres of music, is discussed. It is shown that 74 minutes of both stereo and multi-channel music, which translates to 12.5GB of raw data, fit on the 4.7GB Super Audio disc after compression. An extension to the algorithm for future professional use of higher sampling rates is made. The lossless compression performance is demonstrated with wide-band 256 Fs recordings, and 128 and 64 Fs down converted versions of these, demonstrating the scalability of the algorithm. | ||
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