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This study will evaluate the speech perception ability of adult cochlear implant users in background noise using various MED-EL Automatic Sound Management (ASM) features.
This study will examine how different sound processing approaches support cochlear implant users' ability to understand speech in noisy environments. Automated noise reduction and microphone directionality systems are known to improve listening comfort and speech clarity in challenging settings. Ongoing refinements in these areas may offer additional benefits and allow for more individualized listening options. In this study, adult cochlear implant users will take part in speech-in-noise evaluations while using various sound processing configurations.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Sound Management Conditions | Experimental | Participants will complete speech-in-noise testing in all sound management and omnidirectional conditions. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Automatic Sound Management Fixed Directionality | Device | The audio processor will be programmed with fixed directional microphones. |
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| Measure | Description | Time Frame |
|---|---|---|
| Individual and mean within-subject difference on HINT SNR-50 between ASM Fixed Directionality and Omnidirectional conditions. | Speech perception ability will be measured using the Hearing in noise Test (HINT) sentences in an adaptive procedure. HINT sentences will be presented from the front with continuous, steady-state noise presented at 65 dBA from behind. The presentation level of the speech signal will be adjusted based on participant response. The difference in dB SNR between the ASM Fixed Directionality and Omnidirectional conditions will be summarized. Results for each condition will be reported in dB SNR defined as the SNR level at which 50% score is achieved. | 0 days |
| Measure | Description | Time Frame |
|---|---|---|
| Individual and mean within-subject difference on HINT SNR-50 between ASM Adaptive settings. | The HINT SNR-50 task will be completed using different adaptive automatic sound management features. The difference in dB SNR between the conditions will be summarized. Results for each condition will be reported in dB SNR defined as the SNR level at which 50% score is achieved. | 0 days |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Brittany Wilson, AuD | Med-El Corporation | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of North Carolina, Chapel Hill | Chapel Hill | North Carolina | 27599 | United States |
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| ID | Term |
|---|---|
| D006319 | Hearing Loss, Sensorineural |
| ID | Term |
|---|---|
| D034381 | Hearing Loss |
| D006311 | Hearing Disorders |
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
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Subjects will complete speech perception testing with various combinations of automatic sound management features. The order of program conditions will be randomized across subjects.
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| Automatic Sound Management Adaptive | Device | The audio processor will be programmed with adaptive automatic sound management features. |
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| Omnidirectional Settings | Device | The audio processor will be programmed with omnidirectional microphones and automatic sound management disabled. |
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| D012678 |
| Sensation Disorders |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |