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Über die Bildung der Hörschwellen und Mithörschwellen von Impulsen

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In an investigation of the dynamic behaviour of the ear at the hearing threshold, masking thresholds of sine tone pulses, white noise pulses and pressure pulses are measured as functions of pulse duration and repetition frequency. The results show that the formation of masking thresholds may not completely be described by simple persistence. Besides the inherent persistence with the time constant τs = 200 ms, which may directly be determined from the masking threshold of sine tone pulses, the spectral separation of the signal into frequency groups is of great significance. Short pulses with a duration t i < 5 ms are not subject to spectral separation. Their masking threshold is only given by the energy of the pulse independent of the spectral distribution. With increasing pulse duration or repetition frequency respectively, that is in the transition from single pulses to continuous signals, spectral separation is found due to the gradual formation of frequency groups. Consequently only the intensity of the signal found within one frequency group finally is effective.

It is demonstrated with measured masking thresholds of pressure pulses, that with short pulses the spectrum of the signal has no influence on the masking threshold.
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Document Type: Research Article

Publication date: January 1, 1962

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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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