It is caused by amplified sound from the hearing aid getting back to the micropphone and being re-amplified. Ways to avoid Whistling /noise Once the hearing aid is properly seated in your ear,the whistling will generally stop.
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Input Noise:≤32dB. Max sound output:118±4dB. Sound gain: ≥32dB±2dB. Current:≤2mA.
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Personal sound booster. 1pc Hearing Aid. Picks up sounds the human ear wouldn’t normally hear. Great to enhance sound while watching TV or at the movies. It uses new technology that enhances vocals while canceling out background noise.
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The cause of howling/noise: The internal amplifier and the microphone are close to each other of the hearing aid, and the sound is continuously received and expanded, so it has a certain possibility of produce howling after power-on.
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Features: 1. USB Rechargeable, no need to replace the battery, environmental-friendly, with a long standby time. 2. Built-in intelligent chip, clear and noise-canceling, no worry about the noisy environment. 3. Strong shell, anti falling and durable, it still can be used normally even if it fell from two meters high. 4. 360° adjustable, suitable for left or right ear to wear. 5. Ergonomic design, soft and flexible, can help you a lot in daily life. .
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Input Noise:≤32dB. Max sound output:118±4dB. Sound gain: ≥32dB±2dB. Normal working about 35 hours.
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If the earmuffs are not fully inserted into the ear canal, or if the air leaks out of the earmuffs, it will cause an annoying whistling sound. -Specially designed for hearing-impaired people, more suitable for the ear canal.
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