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Vent configurations on subjective and objective occlusion effect.

Francis Kuk·Denise Keenan·Chi-chuen Lau
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Abstract

The current study reexamined the effect of vent diameters on objective and subjective occlusion effect (OE) while minimizing two possible sources of variability. Nine hearing-impaired participants with primarily a high-frequency hearing loss were evaluated. Laser shell-making technology was used to make ear inserts of completely-in-the-canal (CIC) hearing aids for the study. This was to minimize any potential slit leakage from the inserts. The vent dimensions were systematically altered during the study. Participants sustained /i/ for 5 sec, and the real-ear occluded response was measured with a custom-made program that performed frequency averaging to reduce response variability. Participants also repeated the phrase "Baby Jeannie is teeny tiny" and rated their own voice. The results showed a systematic change in the objective OE and subjective ratings of OE as the vent diameter was modified. Furthermore, a significant correlation was seen between subjective rating and objective occlusion effect.

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Acoustic StimulationAgedEar CanalEquipment DesignFemaleHearing AidsHearing Loss, SensorineuralHumansLoudness PerceptionMaleMiddle AgedPitch PerceptionJournal Article

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Francis Kuk, Denise Keenan, Chi-chuen Lau. 2005. Vent configurations on subjective and objective occlusion effect.. https://doi.org/10.3766/jaaa.16.9.11

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