When using a remote microphone system coupled with a listener's HA, several variables influence SNR at the TM. Two variables that can be manipulated by programming of either or both devices are the microphone setting and gain setting. Mathematical calculations were used to determine the specific influence of and interactions between these variables and showed the importance of (1) managing noise levels to optimize SNR; and (2) counseling clients regarding optimal use of and realistic expectations from their system. This information is useful in the clinical management of persons with hearing loss, especially with the advent and affordability of wireless microphone accessories to assist listeners in background noise.
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