Exploration of the Functional Effect of Modified Gain Precalculation on Soft Speech Intelligibility
Sebastian Griepentrog
16 participants
Apr 20, 2026
INTERVENTIONAL
Conditions
Summary
An exploratory investigation of gain precalculation principles in CE-labelled Sonova brand hearing instruments (e.g. Phonak hearing instruments) is intended to be conducted on hearing impaired participants. These gain precalculation principles are enabled by respective hearing instrument technologies and hearing instrument algorithms. The aim of the study is to investigate and assess strength and weaknesses of these gain precalculation principles in terms of speech intelligibility to determine their application in hearing instruments (Phase of development). Objective laboratory measurements as well as subjective ratings will be carried out. This will be a controlled, single blinded and randomized active comparator clinical evaluation which will be conducted mono centric at Sonova AG Headquarter based in Stäfa.
Eligibility
Inclusion Criteria6
- Hearing impaired adult at a minimum age of 18 years
- Good written and spoken german skills
- Ability to fill in a questionnaire concientiously
- Ability to produce a reliable hearing test result
- Ability to describe listening impressions / experiences
- Audiogram is in the fitting range of the hearing aids
Exclusion Criteria8
- Unaidable hearing loss in one or both ears
- Auricle deformities that prevent secure placement of the investigational device
- Acute tinnitus in one or both ears
- Unwillingness to test the investigational device
- Asymmetrical hearing loss
- Hypersensitivity or allergy against synthetic materials
- Symptoms of vertigo or dizziness
- Suffering from any otologic disease
Interested in this trial?
Get notified about updates and connect with the research team.
Interventions
Each participant will be fitted with two different pairs of hearing aids with different gain precalculation principles. Gain precalculation applies the amplification of sound signals in the hearing aid. The active comparator condition is the state of the art hearing aid gain precalculation from a competitor device.
Each participant will be fitted with two different pairs of hearing aids with different gain precalculation principles. Gain precalculation applies the amplification of sound signals in the hearing aid. The experimental conditions vary in their parametrization to result in different degrees of added amplification.
Each participant will be fitted with two different pairs of hearing aids with different gain precalculation principles. Gain precalculation applies the amplification of sound signals in the hearing aid. The experimental conditions vary in their parametrization to result in different degrees of added amplification.
Locations(1)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT07388784