Exploration of the Functional Effect of Modified Gain Precalculation on Soft Speech Intelligibility
Reason given: Despite heavy recruiting efforts not enough participants could be found
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Trial details
- Who runs it
- Sebastian Griepentrog
- Trial code
- NCT07388784
- Record updated
- 27 July 2026
- Original description
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.Read full original descriptionShow less
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.
Inclusion: 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: Auricle deformities that prevent secure placement of the investigational device; Unwillingness to test the investigational device; Hypersensitivity or allergy against synthetic materials; Suffering from any otologic disease; Unaidable hearing loss in one or both ears; Acute tinnitus in one or both ears; Asymmetrical hearing loss; Symptoms of vertigo or dizziness.