A new psychoacoustical masking model for audio coding applications

Steven L.J.D.E. van de Par, Armin G. Kohlrausch, M. Charestan, R. Heusdens

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic


The use of psychoacoustical masking models for audio coding applications has been wide spread over the past decades. In such applications, it is typically assumed that the original input signal serves as a masker for the distortions that are introduced by the lossy coding method that is used. Such masking models are based on the peripheral bandpass filtering properties of the auditory system and basically evaluate the distortion-to-masker ratio within each auditory filter. Up to now these models have been based on the assumption that the masking of distortions is governed by the auditory filter for which the ratio between distortion and masker is largest. This assumption, however, is not in line with some new findings within the field of psychoacoustics. A more accurate assumption would be that the human auditory system is able to integrate distortions that are present within a range of auditory filters. In this contribution a new model is presented which is in line with new psychoacoustical studies and which is suitable for application within an audio codec. Although this model can be used to derive a masking curve, the model also gives a measure for the detectability of distortions provided that distortions are not too large.
Original languageEnglish
Title of host publicationProceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages4
ISBN (Print)0-7803-7402-9
Publication statusPublished - 2002
Event2002 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2002) - Orlando, FL, USA, Orlando, United States
Duration: 13 May 200217 May 2002


Conference2002 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2002)
Country/TerritoryUnited States


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