The increasing use of digital audio in personal computers indicates an ongoing need for computationally efficient audio data compression. An implementation of adaptive differential pulse-code modulation incorporating a recursively indexed quantizer (RIQ-DPCM) is presented as an alternative method for efficient audio signal compression on general-purpose computers. The performance characteristics of the RIQ-DPCM procedure are compared with other standard coding techniques of similar computational complexity, and several real-time implementation issues are discussed.

Author: Maher, Robert C.
Affiliation: University of Nebraska-Lincoln, Lincoln, NE
AES Convention: 97 (November 1994) Paper Number: 3922
Publication Date: November 1, 1994
Subject: Audio Encoding

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