Earphone jacks with variable volume controls can benefit only people who have slight hearing loss and do not help people who use hearing aids....
Search Results "Earphone"
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B. Assistive Listening Systems
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Receivers
The criteria recommended by this research include: a signal-to-noise ratio of at least 18 decibels measured at the earphones the capability of receivers to deliver a signal...
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1. INTRODUCTION
Over 90 years ago, some Churches in Denmark were using wired systems that led from a microphone on the pulpit to earphones located at designated seats within the sanctuary....
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Speech Output
Industry commenters pointed out that interruption of speech output is critical because such output, even when not accessed through a handset or earphones, is continuously running and will...