Since few years there are some different source-coding systems for high quality audio signals (CD-quality) which exploit the redundancy and irrelevancy of speech and music signals for an efficient data-reduction. Psychoacoustic research is the basis for the subband coding system MUSICAM (Masking-pattern Universal subband Integrated Coding and Multiplexing), which was developed in cooperation of french, dutch and german scientists. During the development different coding and sound analyzing strategies were used and combined to optimize this system. A combination of two analysis methods, subband and transform, seems to be the best strategy to achieve the highest reduction of the bit-rate. Subband samples are coded using a bit-allocation, which is mainly derived from the spectral values of a Fourier transform. For the synthesis in the decoder only the subband method is used.
Authors:
Wiese, Detlef; Stoll, Gerhard
Affiliation:
Institute fur Rundfunktechnik, GmbH, Munich, West Germany
AES Convention:
89 (September 1990)
Paper Number:
2970
Publication Date:
September 1, 1990
Subject:
Digital Audio Technology
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.