While the processing of modern hearing aids is complex, and computer programming is required to make some of the adjustments, the basic components that make them work has not changed.
The basic function of a hearing aid is as follows:
- Sound waves enter through the microphone, which converts acoustic signals into electrical signals.
- The amplifier increases the strength of the electrical signal.
- From the amplifier, the signal is then transformed back to an acoustic signal by the receiver (a miniature loud speaker).
- From the receiver the signal is channeled into the ear canal, either through a small tube or through an ear mold.
- A battery is required to power the hearing aid and enable the amplification process.
Many hearing aids also have user controls (e.g. toggle switch, volume control wheel, push button, or remote control) that enable the wearer to adjust a variety of hearing aid parameters, including:
- Turning the hearing aid “on” or “off”
- Changing the volume
- Switching to the telecoil
- Switching between omni- and directional-microphone settings
- Switching to a different pre-programmed memory
Hearing Healthcare of Virginia
Hearing Healthcare of Virginia is offering complimentary hearing screenings at its six locations in the Shenandoah Valley and Central Virginia – Charlottesville, Covington, Culpeper, Fishersville, Harrisonburg, and Lexington.
For more information or to schedule an appointment, call (866) 341-4327.
More online at HearVirginia.com.
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