A look-up table has been effectively used in digital audio compression. The method considers two important time-domain parameters, scale factor and mean power of the subband samples, having a close relation to the SMR in the psychoacoustic models. Incorporating LUT in the compression process radically reduces the total encoding time and complexity by about 40% compared with the psychoacoustic model. This enables the real-time software-only implementation of MPEG audio encoding in various environments. The performance of the proposed method shows better results in most of the test materials.

Authors: Kim, Do Hyung; Seo, Yang Seock
Affiliation: Samsung Advanced Institute of Technology, Suwon, Korea
AES Convention: 99 (October 1995) Paper Number: 4091
Publication Date: October 1, 1995
Subject: Low Bit-Rate Audio: Technologies

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