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A Functional Model of Signal Processing in the Peripheral Auditory System

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This paper attempts to outline a functional model of the first stages of auditory analysis including spectral analysis and the principal transformations of signal intensity.

A model has been implemented by a cascade arrangement of single resonant circuits and buffer amplifiers with output taps at each stage. This analyzer has been designed so as to preserve place-frequency, place-delay, and amplitude frequency characteristics at any tap. Furthermore, the amplitude-coordinate (place) characteristics at a constant frequency conform with Zwicker's data of critical bandwidths and masking. The amplitude processing involves half-wave rectification, instantaneous amplitude compression, and peripheral adaptation. The best agreement with experiments on vowel perception with relative delays between spectral components is provided by a peripheral adaptation controlled by a weighted amplitude selection and 40 ms time constant.
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Document Type: Research Article

Publication date: December 1, 1974

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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