1) Audio engineer Ray 2) Audio lab name 3) Audio-tech IPO of 2005 4) Electrical engineer 5) Sound pioneer Ray 6) Sound system name 7) Sound-system name 
Trade name for a series of noise reduction systems that have become standard on many tape playback machines. Many film soundtracks are produced using this process. Different varieties are found from Dolby B on most personal cassette players, to Dolby SR and Digital, the current state of the art for cinema.
[n] - United States electrical engineer who devised the Dolby system used to reduce background noise in tape recording
Ray M. Dolby noun United States electrical engineer who devised the Dolby system used to reduce background noise in tape recording
The most common shared logo or feature between all brands is the Dolby labs' 'double D' symbol. Name
a brand of system for reducing high-frequency noise in audiotape using various electronic devices during recording and playback.