For students with hearing deficiencies there are Personal Frequency Modulation Systems. These devices behave like a small radio station and operate on a special frequency. It works by giving the speaker a microphone with a transmitter in it and a receiver that is given to the listener. The receiver can either be the person's hearing aid or, if the listener does not wear a hearing aid, a set of headphones. For full article about Personal Frequency Modulation Systems click here.
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