Today’s hearing instruments have many features to increase their usefulness, improve speech understanding and listening comfort.
Whistling from the hearing instrument can be annoying, embarrassing, and in some cases, prevent the wearer of the instrument from benefiting. Adaptive Feedback Cancellation is a technology designed to manage the transitory feedback eliminating whistling from the hearing instrument.
Loud sounds: Automatic Gain Control – Output is a technology designed to put a ceiling on loud sounds, adjusted to correspond the users threshold of discomfort, maintaining sounds below this level.
Low sounds: Automatic Gain Control – input “repackages” the speech signal received (or other incoming sounds) to correspond your level of hearing. This means that if the incoming sound has a 30 dB loudness range, and you can only hear at a 60 dB level, the Automatic Gain Control – Output system will adjust the incoming sound to fit your level. This reduces dependence on volume control.
Noise: Digital hearing instruments can analyse incoming signals and differentiate speech from a broad-band noise signal – Digital Noise Reduction. If the dominant signal is believed to be noise there will be a reduction in volume. Note, however, that what you night consider noise, for instance background talkers at a party, might not be considered noise by the hearing instrument.
Sounds from behind and from the side of you will be amplified less than sounds originating from the front. This technology is called Directional Microphone Technology and is available in all hearing instrument styles except CICs, because of size constraints.