Equivalent hearing threshold levels for the RadioEar IP30 insert earphone and short-term stimuli: comparison of peak-equivalent and RMS-based measures.
Int J Audiol
; 59(5): 398-402, 2020 05.
Article
in En
| MEDLINE
| ID: mdl-31657255
ABSTRACT
Objective:
To determine equivalent threshold sound pressure levels (ETSPL) for the RadioEar IP30 insert earphone for standardised short-term stimuli IEC 60645-3 reference clicks and tonebursts in the frequency range from 250 Hz to 6 kHz, using the standardised peak-equivalent ETSPL procedure (peETSPL) and a new proposal based on the unweighted equivalent continuous sound pressure level LZeq. of the periodically repeated short-term stimuli (LZeqETSPL).Design:
Determination of peETSPL and LZeqETSPL hearing threshold levels with otologically normal test subjects under the conditions given in ISO 389-9 using the standardised occluded-ear simulator according to IEC 60318-4.Study sample The study was based on tests with 25 subjects.Results:
The peETSPLs for the RadioEar IP30 insert earphone were compared with the respective reference threshold levels of the insert earphone ER-3A as standardised in the ISO 389 standards series. The LZeqETSPL approach was tested by estimating the LZeqETSPLs from the peRETSPLs and comparing the estimate with the direct results.Conclusions:
Equivalent hearing threshold levels for standardised short-term stimuli for the RadioEar IP30 insert earphone were determined according to ISO 389-9 and given as both peETPSL and LZeqETSPL. The RMS-based LZeqETSPL approach turned out to be well applicable for the RadioEar IP30 insert earphone.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Audiometry, Pure-Tone
/
Auditory Threshold
/
Acoustic Stimulation
/
Equipment Design
/
Hearing Aids
Type of study:
Clinical_trials
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Int J Audiol
Journal subject:
AUDIOLOGIA
Year:
2020
Type:
Article
Affiliation country:
Germany