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What is the working principle of hearing aids?

There are many brands of acoustic bridge hearing aids, but all electronic hearing aids work the same way. Any hearing aid includes 6 basic structures.

How hearing aids work

The 1. microphone (microphone or microphone) receives the sound and converts it into a form of electric wave, which converts the sound energy into electrical energy.

2. Amplifier amplifies electrical signals (transistor amplification lines)

3. headphones (receivers) convert electrical signals into acoustic signals (that is, convert electrical energy into acoustic energy).

4. Ear molds (ear plugs) are placed in the external auditory canal.

5. volume control switch

6. Battery for power supply amplifiers.

Hearing Aids In addition to the above 6 components, most models of hearing aids also have 3 accessories, or 3 additional circuits (tone control, induction coil, output limit control). Modern electronic hearing aids are an amplifier whose function is to increase the intensity of the sound energy and transmit it to the ear as undistorted as possible. Since the sound energy of the sound cannot be directly amplified, it is necessary to convert it into an electrical signal, and then convert it into sound energy after amplification. The input transducer is composed of a microphone (microphone or microphone), a magnetic induction coil, and the like. Its role is to convert the input acoustic energy into electrical energy to the amplifier. The amplifier amplifies the input electrical signal and passes it to the output transducer. The output transducer consists of an earphone or a bone-guide vibrator that converts the amplified signal from electrical energy to acoustic or kinetic energy output. The power supply is an integral part of the working energy supply for the hearing aid. It is also equipped with a peak clipping (PC) or automatic gain control (AGC) device to suit the needs of patients with varying degrees of deafness.

Jinghao medical hearing aid reminder: hearing aids need to be professionally “fitted”, it is very important to choose a professional hearing aid fitting center and hearing aid fittings! All patients and friends have any hearing problems can call the Jinghao medical consultation, or personally Come to the fitting center experience. Hearing aid free consultation phone: +86-18566295705

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REF: Hearing AidsHearing aids ChinaBTE Hearing Aids
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