Definition from Wiktionary, the free dictionary
Jump to: navigation, search



phonautograph (plural phonautographs)

  1. One of the first phonographic recording devices, consisting of a horn or barrel focusing sound waves onto a membrane to which a hog's bristle was attached, causing the bristle to move so enabling it to inscribe a visual medium, which could transcribe sound to a visible medium but had no means to play back the sound after it was recorded.