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| Name | Class |
|---|---|
| Gilles Courtois | UNKNOWN |
| Vincent Grimaldi | UNKNOWN |
| Eleftheria Georganti | UNKNOWN |
| Peter Derleth |
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Within the course of this study, a signal processing feature has been developed at Ecole Polytechnique Fédérale de Lausanne (EPFL), in collaboration with Sonova AG, in order to enhance the listening experience with remote microphone systems. In particular, the developed feature is supposed to improve the so-called audio-visual fusion, i.e. the fact to perceive the sound as coming from the physical location of the source. One of the main goals of the present study is to evaluate the extent to which this feature reaches that objective.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Normal hearing | Experimental | A control group including ten normal-hearing participants. These participants are recruited because they can be considered as a reference when compared to hearing-impaired patients. They usually provide homogeneous results that are expected to be significantly different than those obtained with hearing-impaired patients. In this study, normal-hearing participants are expected to provide better and more consistent performance of auditory distance estimation. |
|
| 10 experienced hearing impaired | Experimental | A group of ten (expected sample size) severe-to-profound hearing-impaired patients who have a past and/or present experience of more than 6 months with remote microphone systems. These patients are expected to be aware of the drawbacks of the current remote microphone technology with respect to sound localization, auditory distance estimation, and audio-visual fusion. |
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| 10 naive hearing impaired | Experimental | A group of ten severe-to-profound hearing-impaired patients with no past or current experience with remote microphone systems. They are referred to as naïve patients. These patients must have similar profiles to the patients in the experienced group as regards the degree of hearing loss, origin of hearing loss (congenital, pre- or post-lingual disability), age, gender, and hearing aid technology. They will be selected and recruited on the basis of the patients included in experienced group |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Digital signal processing algorithms | Other | The intervention consists in applying five processing on some recorded speech signals. In particular, the processing performed by one specific algorithm is compared against the four other. The applied processing is supposed to restore sound externalization (expected audio-visual fusion). |
| Measure | Description | Time Frame |
|---|---|---|
| Auditory distance estimation | This objective is assessed by using a single outcome, which is the perceived auditory distance, as reported by the patient on a graphical user interface. The auditory distance is measured using an arbitrary scale (between 1 and 5) as available with sliders on a graphical user interface (GUI). | 6 months (study completion) |
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Subjects fulfilling all of the following inclusion criteria are eligible for the study:
For all normal-hearing participants:
- Hearing thresholds lower or equal to 20 dB on both ears, as ensured by a pure-tone audiometry (125 Hz to 8 kHz) conducted at the beginning of the session.
For all hearing-impaired patients:
For HI patients experienced with remote microphone systems:
- Past or present users of FM and/or Roger devices for more than six months.
For other HI patients:
- No past or present experience with FM and/or Roger devices for more than one month.
The presence of any one of the following exclusion criteria will lead to exclusion of the participant:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ecole Polytechnique Fédérale de Lausanne | Lausanne | Canton of Vaud | 1015 | Switzerland | ||
| Ecole Polytechnique Fédérale de Lausanne |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 31774032 | Derived | Courtois G, Grimaldi V, Lissek H, Estoppey P, Georganti E. Perception of Auditory Distance in Normal-Hearing and Moderate-to-Profound Hearing-Impaired Listeners. Trends Hear. 2019 Jan-Dec;23:2331216519887615. doi: 10.1177/2331216519887615. |
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| ID | Term |
|---|---|
| D006311 | Hearing Disorders |
| D006319 | Hearing Loss, Sensorineural |
| ID | Term |
|---|---|
| D004427 | Ear Diseases |
| D010038 | Otorhinolaryngologic Diseases |
| D012678 | Sensation Disorders |
| D009461 | Neurologic Manifestations |
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| UNKNOWN |
| David Sooprayen | UNKNOWN |
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|
| Lausanne |
| 1015 |
| Switzerland |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D034381 | Hearing Loss |