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FM: a must for every cochlear implant

Phonak’s FM systems improve the signal–to-noise ratio and

thus the user’s ability to understand speech in noise. Three

major factors that influence the signal-to-noise ratio and the

quality of the speech signal are: background noise, reverbe-

ration, and distance. By delivering the signal of interest via

FM (radio waves), the strength and quality of the sound re-

mains constant across the distance from the speaker to the

hearing impaired individual. FM systems consist of a trans-

mitter with a microphone, and a receiver, which picks up the

signal via radio waves directly from the transmitter.

Cochlear implant recipients experience similar difficulties to

hearing instrument users in challenging environments. It is

well documented that improving the signal-to-noise ratio

(SNR) for cochlear implant recipients through the use of an

FM system significantly improves speech recognition in the

presence of background noise. In recent years Phonak has

developed the most extensive FM product portfolio on the

market. Phonak’s Dynamic FM products boost speech

intelligibility to levels never seen before. Recent scientific

research clearly indicates that Dynamic FM also brings these

benefits to CI recipients.

Well over 60 % of all children with a cochlear implant use

an FM system. A rapidly increasing number of adults also

benefit from an FM system used in combination with their

cochlear implant. This practical fitting guide helps you set-up

the FM system for speech processors of the various brands

of cochlear implants and Baha’s. A very useful online tool is

the FM Configurator (www.phonak.com/fm_configurator),

where you will also find the latest set-up tips.

FM is not a luxury for CI recipients, but increasingly a

necessity. At a fraction of the cost of the CI, an FM system

offers an incredible performance enhancement. We

encou rage you to systematically fit FM systems to all children

and adults with cochlear implants. Candidates should ideally

be informed about FM systems prior to implantation. We

would also love to hear about your experiences. At Phonak we

continue to strive to offer cochlear implant recipients

the best FM systems possible, including their full service and

support throughout the world.

Evaluation of Speech Recognition in Noise with Cochlear Implants and Dynamic FM. Jace

Wolfe, Erin C. Schafer, Benjamin Heldner, Hans E. Mülder, Emily Ward, Brandon Vincent. JAAA,

Volume 20, Number 7, 2009.

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