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Dolby Labs was founded by Ray Dolby (1933–2013) in London, England, in 1965. [5] In the same year, he invented the Dolby Noise Reduction system, a form of audio signal processing for reducing the background hissing sound on cassette tape recordings. [6]
Callan (1974) was the first film with a Dolby-encoded optical soundtrack. The first true LCRS (Left-Center-Right-Surround) soundtrack was encoded on the movie A Star Is Born in 1976. In fewer than ten years, 6,000 cinemas worldwide were equipped to use Dolby Stereo sound. Dolby then developed a digital surround sound compression scheme for the ...
A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. [1] The first was Dolby A, a professional broadband noise reduction system for recording studios that was first demonstrated in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market ...
A competing system, dbx, invented by David Blackmer, [36] also found success in professional audio. [37] A simpler variant of Dolby's noise reduction system, known as Dolby B, greatly improved the sound of cassette tape recordings by reducing the especially high level of hiss that resulted from the cassette's miniaturized tape format.
Ring-and-spring microphones, such as this Western Electric microphone, were common during the electrical age of sound recording c. 1925–45.. The second wave of sound recording history was ushered in by the introduction of Western Electric's integrated system of electrical microphones, electronic signal amplifiers and electromechanical recorders, which was adopted by major US record labels in ...
The sound bar utilizes analysis of a room's reflective characteristics to enable a single-unit 5.1.4 setup. [47] On May 17, 2021, Apple Music announced the addition of spatial audio with support for Dolby Atmos and lossless audio. [48] The feature was introduced to Apple Music users on Apple devices starting from June 7, 2021. [49]
The self-taught son of a television and radio repairman, Fosgate invented the first car amplifier in 1973 and founded Fosgate Electronics, now called Rockford Fosgate. After his departure from Rockford Fosgate in 1981, Fosgate remained active in the audio world, running Fosgate Laboratories and leading the team that created Dolby Pro Logic II.
Dolby Stereo is a sound format made by Dolby Laboratories.It is a unified brand for two completely different basic systems: the Dolby SVA (stereo variable-area) 1976 system used with optical sound tracks on 35mm film, [1] and Dolby Stereo 70mm noise reduction on 6-channel magnetic soundtracks on 70mm prints.