The Influence of Distributed Source Regions in the Formation of the Nonlinear Distortion Component of Cubic Distortion-Product Otoacoustic Emissions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00333108" target="_blank" >RIV/68407700:21230/19:00333108 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/19:00333108
Result on the web
<a href="https://doi.org/10.1121/1.5100611" target="_blank" >https://doi.org/10.1121/1.5100611</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1121/1.5100611" target="_blank" >10.1121/1.5100611</a>
Alternative languages
Result language
angličtina
Original language name
The Influence of Distributed Source Regions in the Formation of the Nonlinear Distortion Component of Cubic Distortion-Product Otoacoustic Emissions
Original language description
Distortion product otoacoustic emissions (DPOAEs) are evoked by two stimulus tones with frequency f1 and f2 of ratio f2 / f1 in the range between approximately 1.05 and 1.4. This study theoretically and experimentally analyzes the cubic 2 f1 - f2 DPOAE for different stimulus levels of one of the tones while the other is constant. Simulations for f2 / f1 of 1.2 and moderate stimulus levels (30-70 dB sound pressure level) indicate that cubic distortion products are generated along a relatively large length of the basilar membrane, the extent of which increases with stimulus level. However, apical from the place of maximum nonlinear force, the wavelets generated by these distributed sources mutually cancel. Therefore, although the spatial extent of the primary DPOAE sources broadens with increasing stimulus level (up to 1.5 oct), the basilar-membrane region contributing to the DPOAE signal is relatively narrow (0.6 oct) and level independent. The observed dependence of DPOAE amplitude on stimulus level can be well-approximated by a point source at the basilar-membrane place where the largest distortion product (maximum of the nonlinear force) is generated. Onset and offset of the DPOAE signal may contain amplitude overshoots (complexities), which are in most cases asymmetrical. Two-tone suppression was identified as the main cause of these onset and offset complexities. DPOAE measurements in two normal-hearing subjects support the level dependence of the steady-state DPOAE amplitude and the asymmetry in the onset and offset responses predicted by the theoretical analysis.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10307 - Acoustics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN
0001-4966
e-ISSN
1520-8524
Volume of the periodical
145
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
2909-2931
UT code for WoS article
000483973600027
EID of the result in the Scopus database
2-s2.0-85065814755