User guide

Part III – Assistive
Listening Devices
Overview
Assistive listening devices such as FM systems and Infrared systems can help to
improve speech understanding, particularly in difficult listening situations. These
devices reduce the effect of distance between the sound source and the listener.
Personal FM Systems
The HiRes Auria Processor can be used with a personal FM system by connecting
the FM system to the Auria Direct Connect Cable. While some FM systems require a
custom patch cable, other FM receivers may connect to the Auria Direct Connect
Cable without use of an additional patch cable.
It is important to obtain the appropriate patch cable for the processor type and
FM type. The use of a patch cable other than those specified by either Advanced
Bionics or the FM manufacturer may cause degradation of the audio signal sent to
the processor.
FM systems use a radio frequency link between the transmitter and the receiver in
order to transmit information. With the HiRes Auria Processor it is possible to adjust
the level of input from the FM receiver and from the HiRes Auria Processor micro-
phone. Your implant audiologist can select a variety of “audio-mixing” options
depending on the individual needs on a program-by-program basis. Audio-mixing
capabilities provide the option of how much sound (in percentage) is received from
different microphone sources. The default audio-mixing ratio for the HiRes Auria
Processor is 50/50. If applicable, your audiologist will set the FM system output, gain
and tone controls per the FM manufacturer’s recommendations prior to FM use.
Operating Instructions
If applicable to the FM system chosen:
• Set the FM volume control of the FM receiver to the minimum setting.
• Set the volume dial of the HiRes Auria Processor to the user’s typical settings.
• In sequence turn on the FM transmitter, then receiver and finally the HiRes Auria
Processor in that order.
• Increase the FM gain/volume control to a comfortable listening level.
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User Guide