Verifying frequency-modulated system performance: It's the right thing to do

Frequency-modulated (FM) systems provide a means of overcoming negative effects of noise, distance, and reverberation, improving communication access for children with hearing loss and/or special listening needs. These systems may be worn alone at the ear or coupled to hearing aids or cochlear implants. Technology in all these devices continues to advance at an astonishing rate. With these advances, there continues to be a need for careful verification of the entire amplification system's performance. The overall goal of verification is to confirm that the entire amplification system is set and functioning as intended. This article addresses current recommended practices for FM system verification for a variety of FM coupling options.