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Induction Loop Assistive Listening Systems
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3-D system acoustic alerting American Sign Language Americans with Disabilities amplifier applications assistive listening devices assistive listening systems audio signal audiologists auditorium auditory Braille captioning channels chapter clients communication access consumers cord cost coupling Courtesy Cued Speech deaf and hard deaf-blind detector developed Disabilities Act earbuds electromagnetic electronic equipment example Figure FM receiver FM system frequency response handset hard of hearing hardwire ALD hearing aid hearing impairment hearing loss hearing person hearing-impaired hearing-impaired person individuals induction loop infrared infrared systems input installed interpreter loop system microphone modulator neckloop noise options output pagers personal hearing aid plug portable preter radio relay service reporters sign language speaker speech perception speech-to-text switch tele TeleBraille telecoil Telecommunications television text telephone tion transmission transmitter users vibrator visual voice wire wireless words