Dolby Laboratories, Incorporated (Dolby Labs) is a company specializing in Audio can mean: sound that can be heard electronics or other signals of frequencies audible to humans (about 20--20,000 Hz) broadcasting or reception of sound high-fidelity sound reproduction sound recording and reproduction in general I hear in Latin This is a disambiguation page — a navigational... audio Note: This article is about audio data compression, which reduces the data rate of digital audio signals. This should not be confused with audio level compression which reduces the dynamic range of audio signals, or companding, which uses both compression and complementary dynamic range expansion as a noise reduction techique... compression and Sound reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. See also Amplifier Audio set Audio editing CD Compact audio cassette Digital vs. Analog Digital audio Hifi Magnetic recording and tape recorder Microphone Music centre Phonograph Loudspeaker Valve sound (tube sound) List of... reproduction.

History

Dolby Labs was founded by Categories: Stub | 1933 births ... Ray Dolby in Royal motto: Dieu et mon droit (French: God and my right) Official language None; English is de facto Capital London Capitals coordinates 51° 30 N, 0° 10 W Largest city London Area  - Total Ranked 1st UK 130,395 km² Population  - Total (2001)  - Density Ranked 1st UK... England in 1965 was a common year starting on Friday (the link is to a full 1965 calendar). Events January-February January 4 - United States President Lyndon Johnson proclaims his Great Society during his State of the Union address. January 12 - Bodies of 2 15 year olds Christine Sharrock + Marrine Schmidt found... 1965. He moved the company to the The United States of America — also referred to as the United States, the U.S.A., the U.S., America¹, the States, or (archaically) Columbia — is a federal republic of 50 states located primarily in central North America (with the exception of two states: Alaska and Hawaii... United States in 1976 is a leap year starting on Thursday (link will take you to calendar). Events January-February January 12 - UN Security Council votes 11-1 to admit the Palestinian Liberation Organization January 15 - Would-be Gerald Ford presidential assassin Sara Jane Moore is sentenced to life in prison January 16... 1976. The first product he made was Dolby Type A Noise Reduction, a simple A waveform before and after the compression stage of companding In telecommunication, signal processing, and thermodynamics, companding (occasionally called compansion) is a method of reducing the effects of a channel with limited dynamic range. It is a combination of compressing and expanding, and is a variant of audio level compression... compander. One of the features that set Dolby's compander apart was that it treated only the quiet sounds that would be masked by tape noise. Dolby marketed the product to record companies.

Dolby was persuaded by Henry Kloss ( 1929, Altoona, PA– January 31, 2002, Cambridge, MA) was a prominent audio engineer who helped advance hi-fi loudspeaker and radio receiver technology beginning in the 1950s until the time of his death. Kloss was responsible for a number of firsts, including the acoustic suspension loudspeaker and... Henry Kloss of KLH to manufacture a consumer version of his noise reduction. Dolby worked more on companding systems and introduced B-type in 1968 was a leap year starting on Monday (the link is to a full 1968 calendar). Events Undated Booker Prize for Fiction is established by Booker plc. 1968 is known as the year of the Prague Spring and also the year of the Paris riots. The ASCII character code is... 1968.

Dolby did not manufacture consumer products outright; it A license or licence is a document or agreement giving permission to do something. The spelling license is usual in American English. In British English, licence is the noun form, and license is the verb, so a when a licensee has a licence, they are licensed by a Licensing Authority... licensed the technologies to Consumer electronics is electronic equipment intended for use by everyday people. Consumer electronics usually find applications in entertainment, communications and office productivity. Some categories of consumer electronics include telephones, audio equipment, televisions, calculators, playback and recording devices such as VCRs, and digital clocks. Consumer electronics are manufactured throughout the world... consumer electronics manufacturers.

Dolby also sought to improve film sound, which at the time was optical and monaural. In 1975 was a common year starting on Wednesday (the link is to a full 1975 calendar). Events January January 1 - Watergate scandal: John N. Mitchell, H. R. Haldeman, John D. Ehrlichman are found guilty of the Watergate cover-up and are sentenced to between 30 months and 8 years in... 1975 Dolby released Dolby Stereo, which included a noise reduction system in addition to more audio channels (Dolby Stereo could actually contain additional center and surround channels). Dolby reworked the system slightly and introduced Dolby Surround and Dolby Pro Logic.

Dolby developed a digital Surround sound is the concept of expanding the spatial imaging of audio playback from 1 dimension (mono/Left-Right) to 2D or 3D. This is often performed for a more realistic audio environment, actively implemented in cinema sound systems, technical theatre, home entertainment, video arcades, computer gaming, and a growing... surround sound Note: This article is about audio data compression, which reduces the data rate of digital audio signals. This should not be confused with audio level compression which reduces the dynamic range of audio signals, or companding, which uses both compression and complementary dynamic range expansion as a noise reduction techique... compression scheme for the cinema. Dolby Digital was first featured on the 1992 is a leap year starting on Wednesday of the Gregorian calendar. Events January January - The Internet Society is formed. January 1 Boutros Boutros-Ghali of Egypt replaces Javier Pérez de Cuéllar of Peru as United Nations Secretary-General George H. W. Bush becomes the first... 1992 film Batman Returns is the second Batman movie starring Michael Keaton as Batman. This time Batman has to stop Catwoman, played by Michelle Pfeiffer, Max Shreck, played by Christopher Walken, and The Penguin, played by Danny DeVito. It was released in 1992, and directed by Tim Burton. The score by Danny... Batman Returns. Introduced to the home theater market with the 1995 was a common year starting on Sunday of the Gregorian calendar. It was the first year of the International Decade of the Worlds Indigenous People (1995- 2005): http://www.unesco.org/culture/indigenous/ Events January January 1 Austria, Finland and Sweden enter the European Union Fred West, accused... 1995 Pioneers LaserDisc Logo The Laserdisc (LD) was the first commercial optical disc storage medium, and was used primarily for the presentation of movies. During its development, the format was referred to as the Optical Videodisc System before MCA, who owned the patent on the technology, re-named the format... laserdisc release of This article is about the science fiction setting. For other meanings, see Stargate (disambiguation). See Stargate (device) for the fictional device after which the series is named. The Stargate fictional universe is originally based on the 1994 science fiction film Stargate. The following works take place in this universe: The... Stargate, the format didn't become widespread in the consumer market, partly because of extra hardware that was neccesary to make use of it, until it was adopted as part of the DVD is an optical disc storage media format that is used for playback of movies with high video and sound quality and for storing data. DVDs are similar in appearance to compact discs. Two DVDs with different bottom sides. DVD pick-up head and drive. History During the early 1990s... DVD specification. Dolby Digital is now found in the HDTV ( The Advanced Television Systems Committee (ATSC) is the group that helped to develop the new digital television standard for the United States, also adopted by Canada, Mexico and South Korea and being considered by other countries. It is a competitor to the more widely-used DVB standards. The ATSC standard... ATSC) standard of the The word Usa has more than one meaning: U.S.A. - The United States of America Usa, Oita - A city in Japan This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article link referred you here, you... USA, DVD players, and many satellite-TV and cable-TV receivers.

Dolby Digital Plus, a more advanced version of Dolby Digital, has been adopted by the HD-DVD (for High-Density Digital Versatile Disc) is a digital optical media format, and is one of the specifications being proposed as the standard for high-definition DVD. HD-DVD is similar to a competing format, the Blu-Ray disc, in that it uses a CD size (120 mm... HD-DVD standard.

On March 15, 2005, Dolby celebrated 40 Years of enhancing entertainment at the ShoWest 2005 Festival in San Francisco.

Technologies

• Description Dolby Digital is the trademarked marketing name for Dolby Laboratories AC-3 codec. It is a lossy audio compression system based on principles of perceptual coding. Its main application is for cinematic multichannel audio, but it supports anywhere from 1.0 channels ( mono) to 5.1 channels (full surround... Dolby Digital ( Aka can refer to the following meanings: Aka is an initialism for Also Known As. Aka refers to the name an African Pygmy tribe. Aka refers to the name of a tribal group in the state of Arunachal Pradesh in India. AKA refers to a British movie made in 2002... aka AC-3), used in DVD is an optical disc storage media format that is used for playback of movies with high video and sound quality and for storing data. DVDs are similar in appearance to compact discs. Two DVDs with different bottom sides. DVD pick-up head and drive. History During the early 1990s... DVDs and A typical megaplex (AMC Rolling Hills 20 in Rolling Hills Estates, California). A movie theater ( American English ) or cinema is a location, usually a building, for viewing movies. Colloquial expressions, mostly used for cinemas collectively, include the silver screen and the big screen (contrasted with the small screen of television... cinemas
• Dolby NR is a noise reduction system developed by Dolby Laboratories for use in analogue magnetic tape recording. It works by companding, i.e. reducing the dynamic range of the sound during recording and expanding it during playback. It is not the only system that works in this way, but... Dolby noise reduction systems for For the meaning of cassette in genetics, see cassette (genetics). typical audio Compact Cassette. The compact audio cassette audio storage medium was introduced by Philips in 1963. It consists of a length of magnetic tape from BASF inside a protective plastic shell. Four tracks are available on the tape, giving... cassettes
• Dolby Pro Logic is an analog surround sound system developed by Dolby Laboratories, Inc. in 1986 for domestic use, based on their 1976 cinema system, Dolby Stereo. It decodes surround information from stereo sound, if present. Suitable source programs encode four channels of sound on the ordinary stereo sound track... Dolby Pro Logic
• Dolby E

See also

• In cinemas, DTS (Digital Theater Systems) is a multichannel audio source for synchronized film sound. A modified time code is optically imaged on the film itself, and the DTS processor uses this to synchronize the soundtrack audio which is recorded in a compressed form on standard CD-ROM media (1... DTS (competitor)
• The Dolby Digital vs DTS debate is long standing insoluble debate among home theater enthusiats and Audiophiles on the web (via arenas such as usenet groups) and elsewhere. Debators compare the two audio codecs, Dolby Digital and DTS and argue that one or the other sounds or is inherently better... Dolby vs DTS

External links

• Dolby Labs site (http://www.dolby.com)