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Analog of Auditory Nerve Response to Acoustic Signals and its Relation to Some Psychoacoustic Phenomena

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The adaptive nature of the auditory nerve response has been modelled into an analog network and equations describing both the transient and steady state conditions of transfer from sound pressure to frequency of neural firing. This is accomplished by a transfer function the gain factor of which is exponentially dependent on a feedback signal which is the first order inertia smoothed halfwave rectified value of the output minus a threshold level of firing. The constants of the net have been derived from available data in the literature of forward masking. The data fall into two groups with respect to derived constants, one for overlapping spectra of masker and signal and one for non-overlapping spectra. The time dependence of forward masking, however, is the same for both groups and conforms with a simple exponential decay with a time constant of 70 ms. The model also provides a simple explanation of the sensation level dependence of differential intensity thresholds.
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Document Type: Research Article

Publication date: December 1, 1974

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  • 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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