Nonlinear Reflection as a Cause of the Short-Latency Component in Stimulus-Frequency Otoacoustic Emissions Simulated by the Methods of Compression and Suppression

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F20%3A00341881" target="_blank" >RIV/68407700:21230/20:00341881 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/20:00341881

Výsledek na webu

<a href="https://doi.org/10.1121/10.0001394" target="_blank" >https://doi.org/10.1121/10.0001394</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1121/10.0001394" target="_blank" >10.1121/10.0001394</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nonlinear Reflection as a Cause of the Short-Latency Component in Stimulus-Frequency Otoacoustic Emissions Simulated by the Methods of Compression and Suppression

Popis výsledku v původním jazyce

Stimulus-frequency otoacoustic emissions (SFOAEs) are generated by coherent reflection of forward traveling waves by perturbations along the basilar membrane. The strongest wavelets are backscattered near the place where the traveling wave reaches its maximal amplitude (tonotopic place). Therefore, the SFOAE group delay might be expected to be twice the group delay estimated in the cochlear filters. However, experimental data have yielded steady-state SFOAE components with near-zero latency. A cochlear model is used to show that short-latency SFOAE components can be generated due to nonlinear reflection of the compressor or suppressor tones used in SFOAE measurements. The simulations indicate that suppressors produce more pronounced short-latency components than compressors. The existence of nonlinear reflection components due to suppressors can also explain why SFOAEs can still be detected when suppressors are presented more than half an octave above the probe-tone frequency. Simulations of the SFOAE suppression tuning curves showed that phase changes in the SFOAE residual as the suppressor frequency increases are mostly determined by phase changes of the nonlinear reflection component.

Název v anglickém jazyce

Nonlinear Reflection as a Cause of the Short-Latency Component in Stimulus-Frequency Otoacoustic Emissions Simulated by the Methods of Compression and Suppression

Popis výsledku anglicky

Stimulus-frequency otoacoustic emissions (SFOAEs) are generated by coherent reflection of forward traveling waves by perturbations along the basilar membrane. The strongest wavelets are backscattered near the place where the traveling wave reaches its maximal amplitude (tonotopic place). Therefore, the SFOAE group delay might be expected to be twice the group delay estimated in the cochlear filters. However, experimental data have yielded steady-state SFOAE components with near-zero latency. A cochlear model is used to show that short-latency SFOAE components can be generated due to nonlinear reflection of the compressor or suppressor tones used in SFOAE measurements. The simulations indicate that suppressors produce more pronounced short-latency components than compressors. The existence of nonlinear reflection components due to suppressors can also explain why SFOAEs can still be detected when suppressors are presented more than half an octave above the probe-tone frequency. Simulations of the SFOAE suppression tuning curves showed that phase changes in the SFOAE residual as the suppressor frequency increases are mostly determined by phase changes of the nonlinear reflection component.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

ISSN

0001-4966

e-ISSN

1520-8524

Svazek periodika

147

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

3992-4008

Kód UT WoS článku

000542960000003

EID výsledku v databázi Scopus

2-s2.0-85087471133