![]() Perceptually this reduction in fluctuation strength keeps the wind noise in the background where it loses its capacity to draw the attention of the hearing aid wearer and thus becomes less annoying. This smooths the wind noise signal in both ears, and as a result, the wind noise is not only softer but also not dominated by such fluctuations anymore. Thereby, the upgraded eWindScreen not only limits the gain for wind noise but also reduces the fluctuations at each ear. Taking on the above-described challenge, the upgraded eWindScreen now introduces a precise wind smoothing algorithm that reacts faster to the fluctuations in the wind noise. ![]() According to Zwicker’s psychoacoustic annoyance model, the more fluctuating the noise is, the more annoying it will be perceived. When exposed to wind noise, even when reduced in level, the random fluctuations in the noise will tend to dominate our perception, making the noise noticeable and annoying. As already indicated in the philosophy of the AX platform, we want our hearing aid processing to move towards augmented processing: by shaping all signals in the hearing aid wearer’s surroundings, thereby allowing the wearer to focus on the relevant ones.
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