Linked from

The 3 pages that link to Édouard-Léon Scott de Martinville, each with the reason it gives.

• PhonographRelated: His 1857 device recorded visible traces decades before practical phonograph playback.

• Sound recordingRelated: His device made visual sound traces decades before playback was possible.

• Acoustic recordingRelated: His device recorded sound patterns mechanically decades before practical playback.