Stephen D. Julstrom studied electrical engineering at the University of Iowa, 1970-1973, where he later worked at the School of Music Recording Studio, supervising students, teaching music recording, and designing a laser projection art control system. From 1981-1992, he was an engineer at Shure, Inc., where he designed wired and wireless microphone circuitry, automatic microphone control and teleconference systems, and surround sound encoders and decoders. Since 1993, he has operated as Julstrom Consulting and Development, Chicago, Illinois, providing product design and research services in primarily audio and acoustic-related fields. He has contributed to several ANSI and TIA standards, has published papers in engineering and audiology journals, and holds 21 patents. In 2011, he received the President’s Award from the Hearing Loss Association of America.