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On the removal of the open earcanal high-pass filter effect due to its occlusion: A bone-conduction occlusion effect theory
- Source :
- Acta Acustica, Vol 5, p 36 (2021)
- Publication Year :
- 2021
- Publisher :
- EDP Sciences, 2021.
-
Abstract
- The occlusion effect is commonly experienced by in-ear device wearers as an increased loudness sensation of bone-conducted low frequency sounds. A widespread theory proposed by Tonndorf and based on a simplified electro-acoustic model describes the phenomenon as the removal of the open earcanal high-pass filter effect due to a perfect or partial occlusion. However, this filter has not been clearly defined and several ambiguities remain. Revisiting the model, a second order high-pass filter effect for the volume velocity transferred between the earcanal wall and the eardrum is highlighted. This filter remains for partial occlusion but vanishes for perfect occlusion. In the latter case, the volume velocity transferred from the earcanal cavity to the middle ear through the eardrum drastically increases, which explains the predominance of the occluded outer ear pathway on the hearing by bone-conduction at low frequencies.
- Subjects :
- Materials science
outer ear
Acoustics and Ultrasonics
Acoustics
QC221-246
01 natural sciences
Loudness
bone conduction
03 medical and health sciences
Speech and Hearing
0302 clinical medicine
Bone conduction
0103 physical sciences
Occlusion
otorhinolaryngologic diseases
Outer ear
medicine
Electrical and Electronic Engineering
030223 otorhinolaryngology
010301 acoustics
Occlusion effect
Acoustics in engineering. Acoustical engineering
high-pass filter effect
Acoustics. Sound
occlusion effect
Computer Science Applications
medicine.anatomical_structure
TA365-367
Middle ear
High-pass filter
Eardrum
Subjects
Details
- ISSN :
- 26814617
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Acta Acustica
- Accession number :
- edsair.doi.dedup.....0c5a7fdd423a39c7004164b6ceda0de8
- Full Text :
- https://doi.org/10.1051/aacus/2021029