Some suggest that the original origin of the term “receiver” is with the telephone and Alexander Graham Bell’s view of how sound was transmitted over a wire. Harvey Dillon on page 11 of his 2nd Edition of Hearing Aids simply notes that, “Microphones used to be called transmitters, which explains why something that emits sound should be called a receiver,” PRR provides more details on Bell’s thinking and mentions that original analog electronic hearing aids used to incorporate some telephone parts: Why is a hearing aid speaker called a receiver? - #16 by PRR
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