What Is The Principle Of Hearing Aids

All hearing aids consist of three main parts: microphones (microphones, amplifiers and receivers (headphones)). The microphones are acoustic-electric transducers that convert external acoustic signals into electrical signals. After inputting the amplifiers, the sound pressure can be amplified to 10,000 or more. Ten thousand times, and then output the amplified sound signal through the receiver.

Hearing aids should also include battery energy to power the machine. Due to the different nature and different degrees of hearing impairment, the function difference is also different, so the device volume adjustment, tone adjustment, maximum output adjustment, telephone pickup and other equipment, as well as OMT (off-microphone-phone) three-position switch are indispensable of. The vast majority of patients with deafness are sensorineural deafness, and quite a few of them have regained positive phenomena. They find it difficult to listen to small sounds, but the slightly louder sounds are unbearable, and the dynamic range of loudness perception is significantly reduced. Since the AGC or PC circuit is used in electronics to achieve compression and limiting functions, such deaf people can use hearing aids to overcome hearing obstacles more satisfactorily.

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