Hughes published his work on the effects of sound on the powered electronic sound pickups, called "transmitters", being developed for telephones
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Hughes published his work on the effects of sound on the powered electronic sound pickups, called "transmitters", being developed for telephones
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-19 from Wikipedia. The archived copy is preserved so this citation survives link rot.