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A methodical evaluation of sound changing principles in CE-labelled Sonova brand hearing instruments (e.g. Phonak hearing instruments) is intended to be conducted on hearing impaired participants. These sound changing principles are enabled by respective hearing instrument technologies and hearing instrument algorithms. The aim of the study is to investigate and asses strength and weaknesses of these sound changing principles in terms of hearing performance to determine their application in hearing instruments (Phase of development). Objective laboratory measurements will be carried out. This will be a controlled, single blinded and randomised active comparator clinical evaluation which will be conducted mono centric at Sonova AG Headquarter based in Stäfa
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hearing Aid with beam form principle_A | Active Comparator | Device: Hearing Aid beam former principle_A (simulation of real ear condition). Each participant will be fitted with the 3 different beam former (directionality change) principles on the same hearing aid, saved to 3 manual programs. Beam former principle is a sound processing algorithm to focus to a target source in a noisy situation to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of beam forming and good speech quality. |
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| Hearing Aid with beam form principle_B | Experimental | Device: Hearing Aid beam former principle_B. Each participant will be fitted with the 3 different beam former (directionality change) principles on the same hearing aid, saved to 3 manual programs. Beam former principle is a sound processing algorithm to focus to a target source in a noisy situation to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of beam forming and good speech quality. |
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| Hearing Aid with beam form principle_C | Experimental | Device: Hearing Aid beam former principle_C. Each participant will be fitted with the 3 different beam former (directionality change) principles on the same hearing aid, saved to 3 manual programs. Beam former principle is a sound processing algorithm to focus to a target source in a noisy situation to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of beam forming and good speech quality. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Bolero B90-SP | Device | Behind the ear Hearing device fitted with an individual ear mold to compensate a Hearing loss |
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| Measure | Description | Time Frame |
|---|---|---|
| Individual binaural Hearing abilities | Primary Outcome measurement is to measure the speech understanding in noise [SNR in dB] for the beam former principles A, B and C | 2 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Speechunderstanding for different beam form principles | Secondary Outcome measurement is to measure individual binaural Hearing abilities with psycho acoustical test principles (Binaural inter aural Level difference [SNR in dB] and Binaural Masking Level Difference [SNR in dB] and speech test [Oldenburger Satztest in noise [SNR in dB]. Thereby, the correlation between psycho acoustical test results and speech test results will be analyzed.](streamdown:incomplete-link) |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sonova AG | Stäfa | Canton of Zurich | 8712 | Switzerland |
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| ID | Term |
|---|---|
| D034381 | Hearing Loss |
| ID | Term |
|---|---|
| D006311 | Hearing Disorders |
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
| D012678 | Sensation Disorders |
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Crossover Assignment Each participant will be treated with each test condition in a randomized order.
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Single (Participant)
| 2 weeks |
| D009461 |
| Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |