Wind Noise Sound Quality Preference and Claims Study
Summary
Sonova registered a clinical trial on ClinicalTrials.gov (NCT07543770) to generate sound quality claims evidence for a new Wind Noise Canceller (WNC) algorithm in hearing instruments. The single-site, two-arm study will compare the new WNC algorithm against the previous iteration in participants with hearing loss, with data collection scheduled for April 22, 2026. Informal exploratory testing by Sonova employees had previously identified improved sound quality ratings depending on wind speed, wind angle, and target signal.
“Claims evidence is required for a new Wind Noise Canceller (WNC) algorithm.”
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What changed
This ClinicalTrials.gov registration documents Sonova's upcoming comparative study of a new Wind Noise Canceller (WNC) algorithm versus the prior version in hearing instruments. The trial will assess wind noise attenuation and target signal fidelity across varying wind speeds, wind angles, and target signals to produce data supporting marketing claims for the updated WNC iteration.
Hearing instrument manufacturers and medical device companies evaluating similar sound quality algorithms should note that this study design relies on subjective sound quality ratings from participants with hearing loss, supplemented by performance parameters across controlled environmental conditions. Claim substantiation through structured comparative testing may serve as a model for WNC or similar audio processing algorithm validation.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Wind Noise Sound Quality Preference and Claims Study
N/A NCT07543770 Kind: NA Apr 22, 2026
Abstract
Claims evidence is required for a new Wind Noise Canceller (WNC) algorithm.
Wind noise is not sound in the classic sense, as it does not correspond to pressure waves moving through the air. However, because the microphone membranes are deflected by the wind noise, the microphones translates them into a sound signal. Since the pressure fluctuations are small in size, this wind noise signal is uncorrelated between the two HI microphones (correlation decreases with increasing microphone distance), creating bothersome sounds at low and very low frequencies. Historically, wind noise cancellers have been applied to make wind noise less bothersome. However, target signal (i.e. speech) sound fidelity can become compromised as a biproduct. Therefore, an updated wind noise canceller has been proposed to improve wind noise attenuation and target signal fidelity compared to the previous iteration. Informal exploratory testing by normal hearing Sonova employees have identified the new wind noise canceller iteration to improve sound quality ratings with some dependencies on (1) wind speed, (2) wind angle and (3) target signal. Therefore, this study will aim to produce sound quality data showing a benefit for the new wind noise canceller compared to the older version for the purpose of claim substantiation.
Conditions: Hearing Loss
Interventions: New wind noise canceller, Old wind noise canceller
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