Digital hearing aids use computer technology. The comfort and sound level that you hear can be custom-tailored to your unique hearing loss. This is accomplished by connecting the hearing instruments to a computer and programming them to your loss. But, there are non-digital / analog hearingNavajo Hearing System devices that can be programmed this way too. So, what are the differences between
Hearing aids receive sound through the microphone. Distortion and noise are added to the sound from the microphone. This is because microphones make noise. Analog devices pass the sound on to you with the noise and distortion. Digital hearing aids take sound as it comes into the instrument and clean it so that there is less distortion and noise. The sound is then sent to the amplifier, where the digital device measures the sound and decide how much power to add in order for you to hear.
After being amplified, the sound is sent to the receiver ( the speaker ) and is then cleaned up again before being sent to your ear. This is also where digital instruments look for feedback ( whistling and work to cancel it before the feedback happens. Digital hearing aids actually perform millions of complex calculations in less than the blink of an eye, so fast you cannot even tell it has happened. The entire process is extremely complicated. These devices are able to be set more precisely to your hearing loss and they also have a wide array of circuitry inside them that control the comfort of the sound and make speech easier to hear in noise.
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