Phonak auto StereoZoom

When noise reaches a level that makes understanding one person in a crowd difficult, auto StereoZoom is automatically activated, allowing you to focus on the voice you want to hear.

Phonak's StereoZoom technology is used when there is background noise and the wearer wants to focus on one speaker. The user has a special program that can be accessed, either by pushing a button on the hearing aid or by using a remote control. When the StereoZoom functionality is activated, the person who is speaking will be easier to hear, since the surrounding noise is being suppressed (though not, of course, eliminated).

This whole process is done using an aid on each ear, with each aid having two microphones. It will not work if only one aid is worn.

According to Phonak, StereoZoom uses "exclusive wireless full bandwidth audio streaming and sophisticated processing technologies to create a bi-directional network of four microphones."

Phonak states that StereoZoom will increase signal-to-noise ratio by 3db. Signal to noise ratio means that the person's speech you are trying to hear will be 3 decibels (give or take a decibel, depending on the noise and acoustic parameters of the environment) above the noise. This will let you hear and understand more words of the conversation in a noisy environment.

In certain Phonak models, the StereoZoom is automatic so no user intervention is required to access the program.

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