Once the hearing test is complete, the Olive app automatically determines how much gain needs to be applied to compensate for your hearing loss. The app does not display those gain values. However the user can use the Equalizer and Volume settings to control specific frequency bands to control sounds she/he can hear.
I. The Volume can be controlled using menu shown below in the red box.
II. The Equalizer can be accessed as shown below.
If you find that there is a lot of feedback (high-pitched tone or noisy rumbling sound) emanating from the Olive, there are a few pointers that might be helpful.
1. A simplistic explanation of sounds around you is that speech tends to predominantly lie within 500Hz-4000Hz, while Noise and other unwanted sounds lie beyond this frequency region. Therefore using the Equalizer, suppress sounds above 4000 Hz and also sounds less than 500 Hz as shown in the figure above.
2. Start the Volume level at 10% and increase gradually till you get to a comfortable level. If the Volume is already at a low level, then go back to step 1 and reduce the individual frequency bands as well, while maintaining a bell-shaped equalizer curve.
3. Another helpful option is to use the foam tip as opposed to the rubber tip. The foam tip is more resistant to sounds escaping the Olive thus preventing feedback.
4. The position of the Olives in your ear can also cause feedback. Ensure that the Olive is seated snug in your ear canal, while both the microphones are exposed in the open. If the ear lobe is blocking/covering a microphone, move the Olive to a different position.
5. Since you are using the Olives for the first time. The loud sounds can be overwhelming. Go gradual. Start with a lower volume in a less noisier environment. You could slowly build up by increasing the Volume and use the Hearing Aids for a longer period of time in noisier environments. If your ears get sore, contact a health care professional.