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A two- or three-stage bit-rate scalable audio coding system

: Grill, B.; Brandenburg, K.
: Audio Engineering Society -AES-

New York, NY: AES, 1995
Preprint - Audio Engineering Society, 4132
Audio Engineering Society (Convention) <99, 1995, New York/NY>
Fraunhofer IIS A ( IIS) ()
audio coding; data compression; Datenkompression; error concealment; Fehlerverschlüsselung; gehörangepaßte Codierung; Layer-3; MPEG-Standard; NMR; noise-to-mask ratio; perceptual coding; psychoacoustic; Psychoakustik; scalable audio coding; skalierbare Toncodierung; Toncodierung

While there are no really scalable audio coding systems known today in ISO MPEG scalability is an important requirement to support the new functionalities of MPEG-4. Scalability, in general, allows a subset of the bitstream to be decoded into a useful signal. This paper describes a two and three stage bit rate scaleable audio codec which combines speech coding an perceptual audio coding techniques with a specially adapted psychoacoustic model.