Complex sentence: The Audio Engineering Society recognised Gerzon's work in audio by awarding him a fellowship in 1978 and the AES Gold Medal in 1991; he was also awarded the AES Publications Award posthumously in 1999.
Split into simpler sentences: The Audio Engineering Society recognised Gerzon's work in audio by awarding him a fellowship in 1978 and the AES Gold Medal in 1991. He was also awarded the AES Publications Award posthumously in 1999.