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Psychoacoustic modeling in sound quality measurements and coding of audio signals

: Brandenburg, K.

Riederer, K.; Lahti, T. ; Acoustical Society of Finland:
Nordic Acoustical Meeting 1996
Tampere, 1996
ISBN: 951-22-3134-4
Nordic Acoustical Meeting (NAM) <1996, Helsinki>
Fraunhofer IIS A ( IIS) ()
data compression; data reduction; Datenkompression; Datenreduktion; error concealment; Fehlerverschlüsselung; gehörangepaßte Codierung; joint stereo coding; low bitrate audio coding; NMR; Noise to mask ratio; perceptual coding; psychoacoustic; Psychoakustik

Psychoacoustic modeling plays an important role in current speech and audio technology. The most important application of psychoacoustics today is perceptual coding of high quality audio signals. This technology went from research to widespread application (including finished international standards) within less than 10 years. Other applications are in speech coding or in the objective evaluation of signals according to perceptual ("subjective") criteria. This paper presents an overview on these current applications of psychoacoustic modeling and some examples of the models which are used.