- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03554577
Assessment of Novel Sound Changing Principles in Hearing Instruments to Determine Their Application - 2018_12
Assessment of Novel Sound Changing Principles in Hearing Instruments to Determine Their Application
Study Overview
Status
Conditions
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Stäfa, Switzerland, 8712
- Sonova AG
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Healthy outer ear (without previous surgical procedures)
- Ability to fill in a questionnaire conscientiously
- Informed Consent as documented by signature
Exclusion Criteria:
- Contraindications to the MD in this study, e.g. known hypersensitivity or allergy to the investigational product
- Limited mobility and not in the position to attend weekly appointments
- Limited ability to describe listening impressions/experiences and the use of the hearing aid
- Inability to produce a reliable hearing test result
- Massively limited dexterity
- Known psychological problems
- Known central hearing disorders
- colour blinded
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Hearing Aid without NR
Hearing Aid without Noise Reduction (NR) serves as reference condition.
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Each participant will be fitted with the 4 different Noise Reduction (Sound Changing) principles on the same hearing aid, saved to 4 manual programs. Noise Reduction principle is a sound processing algorithm to remove noise from a speech signal to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of noise suppression and good speech quality.
Other Names:
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Experimental: Hearing Aid with NR_A
NR_A: Noise Reduction principle A
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Each participant will be fitted with the 4 different Noise Reduction (Sound Changing) principles on the same hearing aid, saved to 4 manual programs. Noise Reduction principle is a sound processing algorithm to remove noise from a speech signal to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of noise suppression and good speech quality.
Other Names:
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Experimental: Hearing Aid with NR_B
NR_B: Noise Reduction principle B.
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Each participant will be fitted with the 4 different Noise Reduction (Sound Changing) principles on the same hearing aid, saved to 4 manual programs. Noise Reduction principle is a sound processing algorithm to remove noise from a speech signal to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of noise suppression and good speech quality.
Other Names:
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Experimental: Hearing Aid with NR_C
NR_C: Noise Reduction principle C.
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Each participant will be fitted with the 4 different Noise Reduction (Sound Changing) principles on the same hearing aid, saved to 4 manual programs. Noise Reduction principle is a sound processing algorithm to remove noise from a speech signal to improve the speech intelligibility and comfort. The experimental conditions vary in their parametrization to result in different degrees of noise suppression and good speech quality.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Sound quality ratings
Time Frame: 4 weeks
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The sound quality ratings will be assessed with the aid of a Multi-Stimulus Test.
The data, serving as the primary outcome measure, are collected in the laboratory and will use a continuous rating scale.
The scale ranges from 0 "very bad" to 100 "very good" in increments of 1.
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4 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oldenburg sentence test in noise
Time Frame: 4 weeks
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The data, serving as secondary outcome is a Signal to noise ratio (SNR) in decibel (dB) where a 50% speech reception threshold is reached.
This outcome measurement will be carried out in the laboratory.
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4 weeks
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Oldenburg sentence test & manual tracking task
Time Frame: 4 weeks
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A dual task paradigm will be used in which the Oldenburg Sentence test in noise will be administered as a primary task, and the subject will manually track a point on a computerised elliptical track as a secondary task.
The aim is to recall as many words from the presented sentence at a predefined SNR and track the point as accurately as possible at the same time.
The SNR is set as the level at which a subject reaches a speech reception threshold of 80-90%.
The data derived, serving as a secondary outcome measure, are a [%] of time on target and distance error from the target.
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4 weeks
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Adaptive Categorial Listening Effort Scaling (ACALES)
Time Frame: 2 weeks
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The ACALES procedure determines self-reported individual listening effort on a scale from "extreme effort" to "no effort" within a signal-to-noise ratio range that corresponds to individual subject perceptions. The data, serving as a secondary outcome, are a set of points on a categorial scale (subjectively perceived listening effort) as a function of different SNRs. |
2 weeks
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Self-report form
Time Frame: One week
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A qualitative questionnaire with predefined questions and comment sections to gather information on individual perceptions regarding the comparison of two different hearing programs during different laboratory-based acoustic scenes.
For details of the hearing aid settings, see study arms.
The data collected from this questionnaire are scores on a continuous rating scale ranging from "hearing program A is much worse than hearing program B" to "hearing program B is much better than hearing program A" and any subjective comments given.
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One week
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Interaural Phase Difference (IPD) Detection thresholds
Time Frame: 1 week
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A 2 Interval - 2 Alternative Forced Choice task to measure the psychometric function of IPD detection with changing stimulus frequency.
The data, serving as an outcome measure, is the individual interaural phase difference (IPD) frequency threshold (the frequency up to which 75% correct answers are given).
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1 week
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Non-verbal Trail Making Test A & B
Time Frame: 1 week
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The Trail Making Test is a neuropsychological test of visual attention and task switching.
It consists of two parts in which the subject is instructed to connect a set of 25 dots as quickly as possible while still maintaining accuracy.
The data, serving as an outcome measure, are time-to-complete the set in seconds.
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1 week
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color-word-interference test by J.R.Stroop
Time Frame: 1 week
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The color-word- interference test ("Farb-Wort-Interferenztest nach J.R.Stroop" (version: "Günther Bäumler")) is a neuropsychological test of visual attention and interferer suppression and will be carried out in the laboratory.
In the first trial, the subject has to read the names of colours written on a card as fast and accurately as possible.
In the second trial, the subject has to name the colour ink of filled boxes on a card as quickly and accurately as possible.
In the third trial, the names of colours are written on a card in a dissimilarly coloured ink.
The participant must read aloud the written words, whilst ignoring the colour of the ink.
The data, serving as an outcome measure, are time-to-complete the sets in seconds.
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1 week
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Juliane Raether, Sonova AG
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Sonova2018_12
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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