Another audio technology pioneer has passed away. Ray Dolby started at Ampex, working on magnetic tape recorders that were based on German machines captured at the end of WWII by Jack Mullin. Later, Dolby made major contributions to Ampex’s development of the first video tape recorder. In the 1960’s, when recording studios went from four to eight tracks — leaving less surface area on the tape for each track — hiss was the result, and the Dolby A noise reduction system was developed to alleviate the problem. Dolby B was the consumer version of the circuit. Today, every HDTV has Dolby Digital decoding built in. I know somebody who worked at Dolby Labs. I’ll see if I can pry out a comment about the man.
Addendum: Somebody who worked at Dolby Labs says…
He was a very very nice man, quiet, extremely intelligent, good-natured. The company under his leadership was a marvelous place to work, where engineers had the ability to follow ideas, where the technology was cutting edge. He was also an extremely good businessman, and understood the power of licensing. His engineering contributions to early recording were ground-breaking.
… and the comments at this link are recommended.