There is a whole album of Debussy performing his works, including the one ("La soirée dans Grenade") linked in the article.

Complete Recordings by Debussy: The Composer as Pianist | Piano Rolls & Acoustic Recordings, 1904-13

https://www.youtube.com/watch?v=W2fgqT8wtcY

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The article on "Welte-Mignon reproducing piano" is fascinating, going into quite extensive historical and technical detail.

http://www.pianola.org/reproducing/reproducing_welte.cfm