Denis Arnold studied phonetics, musicology and psychology for his MA at the University of Bonn, and obtained his PhD from Saarland University for research in phonetics.

He worked extensively with speech corpora and was involved in the compilation of the Karl-Eberhard-Corpus. Since 2017 he has been working at the Leibniz Institute for the German Language in long-term preservation group, where he also works in subprojects of CLARIN, CLARIAH-DE and in the nestor network.