Hearing aid technology is constantly shifting and advancing. One important advance in quality came with the implementation of “directional microphones.”
Omnidirectional microphones gather signal from all angles. Directional microphones allow the user to only gather signal from a particular angle. This improves the signal-to-noise ratio and allows for the listener to more easily focus on a particular person, movie, or other stimulus.
In some situations, omnidirectional microphones can be preferable; hence, many modern hearing aids feature a toggle that allows the hearing aid wearer to choose between the two types. Thus, the hearing aid provides a greater and more focused benefit.
This hearing aid technology is further sophisticated by what are called “adaptive directional microphones.” These hearing aid devices are better able to distinguish speech from noise and automatically filter out noise from a given angle.
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