Second that. I had no idea of his involvement in CS, though, and I'm happy to see this here. I did my master's in Acoustics (Am an M.E.), and his books were so

Second that. I had no idea of his involvement in CS, though, and I'm happy to see this here. I did my master's in Acoustics (Am an M.E.), and his books were some of my go-to for "foundation" concepts in Acoustics. As a professional nowadays I still reach out to them from time to time. Like you said, he was still fairly active on conferences. He left an amazing legacy and is sure to be missed in the Acoustics community.