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Stereo-4
Stereo-4, also known as EV (from Electro-Voice) or EV-4, was a matrix 4-channel quadraphonic sound system developed in 1970 by Leonard Feldman and Jon Fixler. The system was heavily promoted by RadioShack stores in the United States, and some record companies released LP albums encoded in this format. It was the first commercial quadraphonic sound system for LP records. Development The original EV system was compatible with the Dynaquad DY system, and is related to Sansui's QS Regular Matrix system. The EV and QS records are very close to each other—it would take an expert to tell them apart by ear. EV decoders were sometimes used to produce pseudo 4-channel effects from 2-channel stereo recordings. In 1973 Electro-Voice signed an agreement with Columbia/CBS Records to build a new ''universal'' decoder that could decode both SQ and EV records with good results. It could even decode QS records—again, with good results. EV later suggested the same coefficients for an encode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadraphonic Sound
Quadraphonic (or quadrophonic and sometimes quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space. The system allows for the reproduction of sound signals that are (wholly or in part) independent of one another. Four channel quadraphonic surround sound can be used to recreate the highly realistic effect of a three-dimensional live concert hall experience in the home. It can also be used to enhance the listener experience beyond the directional limitations of ordinary two channel stereo sound. Quadraphonic audio was the earliest consumer product in surround sound. Since it was introduced to the public in the early 1970s many thousands of quadraphonic recordings have been made. Quadraphonic sound was a commercial failure when first introduced due to a variety of technical issues and format incompatibilities. Four channel audio formats can be more expensive to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadraphonic Sound
Quadraphonic (or quadrophonic and sometimes quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space. The system allows for the reproduction of sound signals that are (wholly or in part) independent of one another. Four channel quadraphonic surround sound can be used to recreate the highly realistic effect of a three-dimensional live concert hall experience in the home. It can also be used to enhance the listener experience beyond the directional limitations of ordinary two channel stereo sound. Quadraphonic audio was the earliest consumer product in surround sound. Since it was introduced to the public in the early 1970s many thousands of quadraphonic recordings have been made. Quadraphonic sound was a commercial failure when first introduced due to a variety of technical issues and format incompatibilities. Four channel audio formats can be more expensive to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynaquad
Dynaquad, or DY, was a matrix decoder 4-channel quadraphonic sound system developed by Dynaco in 1969. The system originally had four speakers that were arranged in a diamond shape (centre-front, centre-left, centre-rear, centre-right). Initially (first available in 1969 with th ''Dynaco SCA-80Q'' amplifier ), it was introduced as a derived (2:2:4) four channel "decoding" system based on the Hafler circuit, where the back channels played ambient sounds recovered from standard stereo sounds. As such it wasn't used initially used as an encoding method (a similar approach was used on the Electrovoice Stereo-4 system). Commercial usage A simpler form of Dynaquad was adopted, allowing an easy adaptation of existing home setups. The two forward speakers remain in their normal positions, with the user only needing to add two similarly positioned back speakers, forming a square (front-left, front-right, back-left, back-right). Four channel record pioneers Vanguard Records started to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electro-Voice
Electro-Voice (EV) is an American manufacturer of audio equipment, including microphones, amplifiers, and loudspeakers, focused on pro audio applications such as sound reinforcement. As a subdivision of Bosch Communications Systems Inc. since 2006, Electro-Voice markets products for use by consumers as well as small or large concert venues, broadcasting, houses of worship, and in retail situations. History On September 1, 1927, Lou Burroughs and Albert R. Kahn began a small business called Radio Engineers, servicing radio receivers in the basement of the Century Tire and Rubber Company in South Bend, Indiana. Because of the Great Depression, according to Kahn, “We found ourselves insolvent to the extent of $5,000” ($ today). They decided to focus their business on audio products. The company designed a PA system for Notre Dame football coach Knute Rockne. Rockne, who had difficulty being heard at football practices due to health problems that affected his voice, called the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovation Records
Ovation Records was an American independent record label based in Glenview, Illinois. The label was founded in 1969 by Dick Schory, who had been on RCA Records with his Percussion Pops Orchestra and had helped create the Dynagroove process used by RCA. The label was created to feature many different genres; the mid-1970s success of The Kendalls gave Ovation an image as a country music label, although it continued to record rock and pop. For several years, all Ovation LPs were released in a 4-channel matrix quadraphonic format, which was compatible with stereo 2-channel playback systems. The label initially used the EV or Stereo-4 matrix but later changed to QS Regular Matrix. The Ovation Records product was acquired by global rights management company 43 North Broadway, LLC. Artists * Sheila Andrews *Max D. Barnes * Steve Dahl and Teenage Radiation *Okie Duke *Cleveland Eaton *Family Brown *Mark Gaddis *Vern Gosdin *Hollins & Starr *Johnson & Drake *The Kendalls *Bonnie Koloc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QS Regular Matrix
Quadraphonic Sound (originally called Quadphonic Synthesizer, and later referred to as RM or Regular Matrix) was a matrix 4-channel quadraphonic sound system for phonograph records. The system was based on technology created by Peter Scheiber, but further developed by engineer Ryosuke Ito of Sansui in the early 1970s. The technology was freely licensed and was adopted by many record labels including ABC, Advent, BluesWay, Candide, Command, Decca, Impulse, Longines, MCA, Passport, Pye, Turnabout and Vox. Hundreds of recordings using this format were released on vinyl LP records during the 1970s. RM (''Regular Matrix'') was often used a synonym for QS, but was actually a standard set by the Japanese governing body, which also embraced the QM (''Quadraphonic Matrix'', consisting of Stereo-4 and Dynaquad) and QX (''QuadXtra'', based on D.H. Cooper "Dual-Triphonic") matrix systems. The QS matrix has been found to offer the advantages of excellent diagonal separation and stereo c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RadioShack
RadioShack, formerly RadioShack Corporation, is an American retailer founded in 1921. At its peak in 1999, RadioShack operated over 8,000 worldwide stores named RadioShack or Tandy Electronics in the United States, Mexico, United Kingdom, Australia, and Canada. Outside of those territories, the company licensed other companies to use the RadioShack brand name in parts of Asia, North Africa, Latin America, and the Caribbean. In February 2015, RadioShack Corporation filed for Chapter 11 protection under United States bankruptcy law after 11 consecutive quarterly losses. By then, it was operating only in the United States and Latin America. In May 2015, General Wireless Inc., an affiliate of Standard General, bought the company's assets, including the RadioShack brand name and related intellectual property, for US$26.2 million. General Wireless Operations Inc. was formed to operate the RadioShack stores, and General Wireless IP Holdings LLC was formed to hold the intellectual prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary (Mary Travers Album)
''Mary'' is the debut solo album by Mary Travers of Peter, Paul and Mary. It was the most successful of the five solo albums she recorded between 1971 and 1978. The album was released on CD for the first time in 2008 as part of the "Solo Recordings" three-CD set released by Rhino Entertainment and sold exclusively at Barnes & Noble. The three-CD set contains the self-titled debut solo albums of all the three members of the group. Reception ''Sounds'' gave the album a resoundingly positive review, praising the warmth and variety of Travers's vocals, applauding the choice of Lee Holdridge as the arranger and conductor, and saying that the songs "are all natural reflections of Mary's outlook on life, love and herself and are handled by everyone connected with the album with delicacy and feeling." Track listing Side one #"The Song is Love" 3:00 (Paul Stookey, Peter Yarrow, Mary Travers, David Dixon, Richard Kniss) #"I Guess He'd Rather Be in Colorado" (2:06) (Bill Danoff, Taffy Ni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Engineering Society
The Audio Engineering Society (AES) is a professional body for engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products for audio, and persons working in audio content production. It also includes acousticians, audiologists, academics, and those in other disciplines related to audio. The AES is the only worldwide professional society devoted exclusively to audio technology. Established in 1948, the Society develops, reviews and publishes engineering standards for the audio and related media industries, and produces the AES Conventions, which are held twice a year alternating between Europe and the US. The AES and individual regional or national ''sections'' also hold ''AES Conferences'' on different topics during the year. History The idea of a society dedicated solely to audio engineering had been discussed for some time before the first meeting, but was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadradisc
Compatible Discrete 4, also known as Quadradisc or CD-4 (not to be confused with compact disc) was as a discrete four-channel quadraphonic system for phonograph records. The system was created by JVC and RCA in 1971 and introduced in May 1972. Hundreds of recordings using this technology were released on LP during the 1970s. Other major record companies who adopted this format include A&M, Arista, Atlantic, Capricorn, Elektra, Fantasy, Nonesuch, Reprise and Warner Bros. This was the only discrete quadraphonic phonograph record system to gain major industry acceptance. A competing system, UD-4, was later introduced by Denon (Nippon Columbia). In discrete quadraphonic systems, all four channels remain fully independent of each other throughout the entire recording and reproduction chain. There is no intermingling of channels as is done in matrix decoder 4-channel systems such as Stereo Quadraphonic (SQ) and QS Regular Matrix. Though CD-4 and other quadraphonic technologies w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compatible Discrete 4
Compatible Discrete 4, also known as Quadradisc or CD-4 (not to be confused with compact disc) was as a discrete four-channel quadraphonic system for phonograph records. The system was created by JVC and RCA in 1971 and introduced in May 1972. Hundreds of recordings using this technology were released on LP during the 1970s. Other major record companies who adopted this format include A&M, Arista, Atlantic, Capricorn, Elektra, Fantasy, Nonesuch, Reprise and Warner Bros. This was the only discrete quadraphonic phonograph record system to gain major industry acceptance. A competing system, UD-4, was later introduced by Denon (Nippon Columbia). In discrete quadraphonic systems, all four channels remain fully independent of each other throughout the entire recording and reproduction chain. There is no intermingling of channels as is done in matrix decoder 4-channel systems such as Stereo Quadraphonic (SQ) and QS Regular Matrix. Though CD-4 and other quadraphonic technologies w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discogs
Discogs (short for discographies) is a database of information about audio recordings, including commercial releases, promotional releases, and bootleg or off-label releases. While the site was originally created with a goal of becoming the largest online database of electronic music, the site now includes releases in all genres on all formats. After the database was opened to contributions from the public, rock music began to become the most prevalent genre listed. , Discogs contains over 15.7 million releases, by over 8.3 million artists, across over 1.9 million labels, contributed from over 644,000 contributor user accounts – with these figures constantly growing as users continually add previously unlisted releases to the site over time. The Discogs servers, currently hosted under the domain name discogs.com, are owned by Zink Media, Inc. and located in Portland, Oregon, United States. History The discogs.com domain name was registered in August 2000, and Discogs itself ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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