Digital Hearing aids today all have several standard Hearing X3 Review technologies. In their most basic sense, all have a microphone, amplifier, sound processor, and a speaker which sends the sound down the ear canal to the ear drum. They all run via battery and have a plastic or ceramic cover which holds all the components in place. So if all hearing aids share these features, why is there such a variation in price, with some selling for a thousand dollars or so, and others fetching ten times this amount and beyond?
The differences in these technologies all comes down to a single element, the sound processor. This is the microchip which runs the device and which the hearing specialist programs when they are fitting the your devices to suit your particular needs. It is the driver which delivers particular sound frequencies at particular intensities to match your hearing levels, it looks after feedback management so you don't have a whistling device, it determines when to increase and decrease volume levels, and it constantly monitors the environment to determine which set of features it will enable to suit the sound environment you are in.
These sound processors monitor sound inputs coming into the microphones millions of times per second, looking for speech, noise, wind, music and any combination of these. When it decides you are in a noisy environment for example, it will start to decrease the volume in the frequencies where this noise is. If it then picks up a dominant speech sound, it will increase the volume in the frequencies where this is, and can even decide to zoom in a particular direction to maximise the speech benefit. Digital hearing aid sound processors are amongst some of the highest technology microchips in the world, and much research time and dollars have been invested to get them to the level they are at today.
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