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A Variable-Bit-Rate Buried-Data Channel for Compact Disc

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Recently an elegant method was published to add buried data to a CD signal in a compatible way. This method is based on subtractively dithered noise-shaped quantization and provides a fixed-rate buried-data channel. An adaptive extension to this method, resulting in a variable rate of higher average value, is described.

JAES Volume 43 Issue 1/2 pp. 23-28; February 1995
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AES - Audio Engineering Society