Is infrasound perceived by the auditory system through distortions?
| Autor: | Thomas Fedtke, Björn Friedrich, Holger Joost, Jesko L. Verhey |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Auditory perception
medicine.medical_specialty Acoustics and Ultrasonics Microphone Computer science Infrasound QC221-246 Audiology 01 natural sciences low-distortion reproduction system 03 medical and health sciences Speech and Hearing 0302 clinical medicine Distortion 0103 physical sciences otorhinolaryngologic diseases medicine Auditory system Ear canal Electrical and Electronic Engineering Sound pressure 010301 acoustics infrasound perception Acoustics in engineering. Acoustical engineering auditory distortion products Acoustics. Sound Computer Science Applications Sound recording and reproduction medicine.anatomical_structure TA365-367 sense organs 030217 neurology & neurosurgery |
| Zdroj: | Acta Acustica, Vol 5, p 4 (2021) |
| ISSN: | 2681-4617 |
| DOI: | 10.1051/aacus/2020029 |
| Popis: | Several studies showed that the human auditory system is sensitive to infrasound. The present study investigated if non-linear processes within the ear generate distortion products, which may explain the auditory sensitivity to infrasound. Pure-tone infrasound stimuli were presented to the ears of 16 listeners with a low-distortion sound reproduction system via an ear insert. Simultaneously, the sound in the ear canal was recorded with a high-sensitivity probe microphone. In addition, detection thresholds in quiet for these stimuli were determined in all listeners. All of the listeners showed distortion products, which were detected by analyzing the sound recorded in their ear canals during infrasound stimulation, for at least one of the signal frequencies. The sound pressure levels of the distortion products were well below the reference thresholds at the corresponding frequencies. For each signal frequency, the listeners’ detection thresholds in cases with ear-generated distortion products did not differ significantly from those in cases without. Thus, the present data do not support the hypothesis that distortion products play a major role in the auditory perception of infrasound. |
| Databáze: | OpenAIRE |
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