Dolby

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Dolby

™ any of various specialized electronic circuits, esp those used for noise reduction in tape recorders by functioning as companders on high-frequency signals

Dolby

(Dolby Laboratories, Wiltshire, England, www.dolby.com) An audio research laboratory founded in 1965 in London by American engineer and physicist Ray Dolby. The company introduced its noise reduction system for tape recording in that same year, which became known as Dolby A and has been widely used in music recording as well as movie theater soundtracks. Dolby B and C, introduced in 1968 and 1981 respectively, were geared for consumer audio tapes.

In 1986, Dolby SR (Spectral Recording) added signal processing techniques that doubled the noise reduction of Dolby A for professional use. Its derivative, Dolby S, is found in high-end cassette decks. Dolby circuits have been used in millions of audio tape recorders and players to eliminate the annoying hiss and improve the signal-to-noise ratio (SNR) of analog tapes.

Starting in the 1970s, Dolby's analog and digital audio encoding technologies have been mainstream audio formats for movie theaters and home theater systems. See Dolby Surround and Dolby Digital.
References in periodicals archive ?
CONTACT: Steve Forshay, vice president, Engineering or Ed Schummer, vice president, Licensing of Dolby Laboratories, 415-558-0200/
2 billion products with Dolby technologies have been sold to date worldwide, making Dolby a common thread in today's entertainment," said Ramzi Haidamus, Senior Vice President and General Manager, Consumer Division, Dolby Laboratories.
Many of our customers in China are OEM manufacturers located in the Shenzhen region; therefore, we have opened our seventh Asian office in that region," said Ramzi Haidamus, Senior Vice President and General Manager, Consumer Division, Dolby Laboratories.
Dolby is proud to continue its tradition of providing the tools to filmmakers for producing the highest quality content for cinema playback with the introduction of the SCC2000," said Tim Partridge, Senior Vice President and General Manager, Professional Division, Dolby Laboratories.
With the advent of home cinema systems, consumers expect high-quality surround sound on a wide range of entertainment mediums," remarked Jason Power, Market Development Manager, Dolby Laboratories.
We've worked closely over the years with our Taiwan-based customers, and this new office underscores our commitment to providing not only world-class technologies but also world class support," said Ramzi Haidamus, Senior Vice President and General Manager, Consumer Division, Dolby Laboratories.