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Cerwin Vega
Cerwin-Vega Inc. is a brand name used on products for professional audio components, as well as home audio speakers, and car audio components. Originally a stand-alone company, Cerwin-Vega was acquired by the Stanton Group after declaring bankruptcy in 2003. Then, in 2007 Stanton sold off the mobile products division to CVM Acquisition Services (a sister company to Diamond Audio Technologies) LLC. The brand name of Cerwin-Vega was effectively split for several years across two companies, Cerwin-Vega Mobile which handled products specifically for mobile applications and Stanton Group for all remaining products. Later, the Stanton Group was wholly acquired by Gibson Guitar Company on December 5, 2011, and for some time Gibson managed Cerwin Vega, KRK Systems, and Stanton brands under their Gibson Pro Audio division. Cerwin-Vega sells internationally from two main locations; one in Deerfield Beach, FL, and the other location in Brussels, Belgium, while manufacturing their pro pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sound Pressure Level
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave. In air, sound pressure can be measured using a microphone, and in water with a hydrophone. The SI unit of sound pressure is the pascal (Pa). Mathematical definition A sound wave in a transmission medium causes a deviation (sound pressure, a ''dynamic'' pressure) in the local ambient pressure, a ''static'' pressure. Sound pressure, denoted ''p'', is defined by p_\text = p_\text + p, where * ''p''total is the total pressure, * ''p''stat is the static pressure. Sound measurements Sound intensity In a sound wave, the complementary variable to sound pressure is the particle velocity. Together, they determine the sound intensity of the wave. ''Sound intensity'', denoted I and measured in W· m−2 in SI units, is defined by \mathbf I = p \mathbf v, where * ''p'' is the sound pressure, * v is the particle velocity. Acoustic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Music Equipment Manufacturers
Music is generally defined as the art of arranging sound to create some combination of form, harmony, melody, rhythm or otherwise expressive content. Exact definitions of music vary considerably around the world, though it is an aspect of all human societies, a cultural universal. While scholars agree that music is defined by a few specific elements, there is no consensus on their precise definitions. The creation of music is commonly divided into musical composition, musical improvisation, and musical performance, though the topic itself extends into academic disciplines, criticism, philosophy, and psychology. Music may be performed or improvised using a vast range of instruments, including the human voice. In some musical contexts, a performance or composition may be to some extent improvised. For instance, in Hindustani classical music, the performer plays spontaneously while following a partially defined structure and using characteristic motifs. In modal jazz t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker Manufacturers
This is a list of notable manufacturers of loudspeakers. In regard to notability, this is not intended to be an all-inclusive list; it is a list of manufacturers especially noted for their loudspeakers and which have articles on Wikipedia. To see more manufacturers, please refer to the category Loudspeaker manufacturers. See also * Lists of companies * List of studio monitor manufacturers * :Audio amplifier manufacturers References {{reflist Loudspeaker manufacturers This is a list of notable manufacturers of loudspeakers. In regard to notability, this is not intended to be an all-inclusive list; it is a list of manufacturers especially noted for their loudspeakers and which have articles on Wikipedia. To see ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subwoofer
A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies known as bass and sub-bass, lower in frequency than those which can be (optimally) generated by a woofer. The typical frequency range for a subwoofer is about 20–200 Hz for consumer products, below 100 Hz for professional live sound, and below 80 Hz in THX-certified systems. Subwoofers are never used alone, as they are intended to ''augment'' the low-frequency range of loudspeakers that cover the higher frequency bands. While the term "subwoofer" technically only refers to the speaker driver, in common parlance, the term often refers to a subwoofer driver mounted in a speaker enclosure (cabinet), often with a built-in amplifier. Subwoofers are made up of one or more woofers mounted in a loudspeaker enclosure—often made of wood—capable of withstanding air pressure while resisting deformation. Subwoofer enclosures come in a variety of designs, including bass reflex (wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woofer
A woofer or bass speaker is a technical term for a loudspeaker driver designed to produce low frequency sounds, typically from 50 Hz up to 1000 Hz. The name is from the onomatopoeic English word for a dog's bark, " woof" (in contrast to the name used for loudspeakers designed to reproduce high-frequency sounds, ''tweeter''). The most common design for a woofer is the electrodynamic driver, which typically uses a stiff paper cone, driven by a voice coil surrounded by a magnetic field. The voice coil is attached by adhesives to the back of the loudspeaker cone. The voice coil and the magnet form a linear electric motor. When current flows through the voice coil, the coil moves in relation to the frame according to Fleming's left hand rule for motors, causing the coil to push or pull on the driver cone in a piston-like way. The resulting motion of the cone creates sound waves, as it moves in and out. At ordinary sound pressure levels (SPL), most humans can hear down to about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake (1974 Film)
''Earthquake'' is a 1974 American ensemble disaster drama film directed and produced by Mark Robson and starring Charlton Heston and Ava Gardner. The plot concerns the struggle for survival after a catastrophic earthquake destroys most of the city of Los Angeles, California. Directed by Robson with a screenplay by George Fox and Mario Puzo, the film starred a large cast of well-known actors, including Heston, Gardner, George Kennedy, Lorne Greene, Geneviève Bujold, Richard Roundtree, Marjoe Gortner, Barry Sullivan, Lloyd Nolan, Victoria Principal, and (under an alias) Walter Matthau. It is notable for the use of an innovative sound effect called Sensurround, which created the sense of actually experiencing an earthquake in theatres. Plot On his way to work, former football star Stewart Graff, having just fought with his wife Remy, visits Denise Marshall, an actress who is the widow of one of his friends. He drops off an autographed football for her son Corry. A mild earthquake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Universal Studios
Universal Pictures (legally Universal City Studios LLC, also known as Universal Studios, or simply Universal; common metonym: Uni, and formerly named Universal Film Manufacturing Company and Universal-International Pictures Inc.) is an American film production and distribution company owned by Comcast through the NBCUniversal Film and Entertainment division of NBCUniversal. Founded in 1912 by Carl Laemmle, Mark Dintenfass, Charles O. Baumann, Adam Kessel, Pat Powers, William Swanson, David Horsley, Robert H. Cochrane, and Jules Brulatour, Universal is the oldest surviving film studio in the United States; the world's fifth oldest after Gaumont, Pathé, Titanus, and Nordisk Film; and the oldest member of Hollywood's "Big Five" studios in terms of the overall film market. Its studios are located in Universal City, California, and its corporate offices are located in New York City. In 1962, the studio was acquired by MCA, which was re-launched as NBCUniversal in 2004. U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensurround
Sensurround is the brand name for a process developed by Cerwin-Vega in conjunction with Universal Studios to enhance the audio experience during film screenings, specifically for the 1974 film ''Earthquake''. The process was intended for subsequent use and was adopted for four more films, '' Midway'' (1976), ''Rollercoaster'' (1977), the theatrical version of ''Saga of a Star World'' (1978), the '' Battlestar Galactica'' pilot, as well as the compilation film '' Mission Galactica: The Cylon Attack'' (1979). Sensurround worked by adding extended-range bass for sound effects. The low-frequency sounds were more felt than heard, providing a vivid complement to onscreen depictions of earth tremors, bomber formations, and amusement park rides. The overall trend toward "multiplex" cinema structures presented challenges that made Sensurround impractical as a permanent feature of cinema. Sensurround helped bring wider recognition to established loudspeaker manufacturer Cerwin-Vega, and aided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Czerwinski At AES Convention
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fender Musical Instruments Corporation
The Fender Musical Instruments Corporation (FMIC, or simply Fender) is an American manufacturer of instruments and amplifiers. Fender produces acoustic guitars, bass amplifiers and public address equipment, however it is best known for its solid-body electric guitars and bass guitars, particularly the Stratocaster, Telecaster, Jaguar, Jazzmaster, Precision Bass, and the Jazz Bass. The company was founded in Fullerton, California by Clarence Leonidas "Leo" Fender in 1946. Its headquarters are in Los Angeles, California. The FMIC is a privately held corporation, with Andy Mooney serving as the Chief Executive Officer (CEO). The company filed for an initial public offering in March 2012, but this was withdrawn five months later. In addition to its Los Angeles headquarters, Fender has manufacturing facilities in Corona, California (US) and Ensenada, Baja California (Mexico). As of July 10, 2012, the majority shareholders of Fender were the private equity firm of Weston P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Amplifier
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a Signal (information theory), signal (a time-varying voltage or Electric current, current). It may increase the power (physics), power significantly, or its main effect may be to boost the voltage or current (power amplifier, power, voltage or current amplifier). It is a two-port network, two-port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals, producing a greater amplitude signal at its output. The ratio of output to input voltage, current, or power is termed gain (electronics), gain (voltage, current, or power gain). An amplifier, by definition has gain greater than unity (if the gain is less than unity, the device is an attenuator (electronics), attenuator). An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
