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UC (noise Reduction)
The UC compander system (with "UC" derived from Universal Compatible or Universal Compander) is a noise reduction system for vinyl records, aiming at highest playback compatibility even without corresponding UC expander. Overview The UC compander system was developed in the 1980s by (ZWT) of (RFT) in the former German Democratic Republic (GDR). The system was based on the observation that the dynamic range of typical audio source material almost always needs to be reduced in the vinyl mastering process and that very similar system parameters are commonly applied in the process either by the sound engineer or through the hardware. The idea was to develop a compander system loosely emulating this process and to formally standardize on its characteristics. By emulating the typical characteristics of this compression, UC compressed records would not produce acoustical artifacts which would not have been present in similar form on the produced disk anyway, and that thereby they wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noise Reduction System
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio. All signal processing devices, both analog and digital, have traits that make them susceptible to noise. Noise can be random with an even frequency distribution (white noise), or frequency-dependent noise introduced by a device's mechanism or signal processing algorithms. In electronic systems, a major type of noise is ''hiss'' created by random electron motion due to thermal agitation. These agitated electrons rapidly add and subtract from the output signal and thus create detectable noise. In the case of photographic film and magnetic tape, noise (both visible and audible) is introduced due to the grain structure of the medium. In photogr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linear Tracking
In mathematics, the term ''linear'' is used in two distinct senses for two different properties: * linearity of a ''function'' (or '' mapping''); * linearity of a ''polynomial''. An example of a linear function is the function defined by f(x)=(ax,bx) that maps the real line to a line in the Euclidean plane R2 that passes through the origin. An example of a linear polynomial in the variables X, Y and Z is aX+bY+cZ+d. Linearity of a mapping is closely related to '' proportionality''. Examples in physics include the linear relationship of voltage and current in an electrical conductor (Ohm's law), and the relationship of mass and weight. By contrast, more complicated relationships, such as between velocity and kinetic energy, are ''nonlinear''. Generalized for functions in more than one dimension, linearity means the property of a function of being compatible with addition and scaling, also known as the superposition principle. Linearity of a polynomial means that its degree is ... [...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. Database contents are user-generated, and described in ''The New York Times'' as "Wikipedia-like". While the site was originally created with the goal of becoming the largest online database of electronic music, it now includes releases in all genres and on all formats. By 2015, it had a new goal: that of "cataloging every single piece of physical music ever created." As of 2025, its database contains over 18 million user-submitted album listings. History Discogs was started in 2000 by Kevin Lewandowski who worked as a programmer at Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo .... It wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elektro-Mess-Technik
Elektromesstechnik (EMT) is a manufacturer of phonograph turntables and professional audio equipment, including a well-regarded line of artificial reverberation devices beginning with the EMT 140 plate reverb. The company was founded by Wilhelm Franz. Founding Wilhelm Franz, born in Bremen in 1913, founded Elektromesstechnik Wilhelm Franz K.G. in Berlin in 1938. Two years later Wilhelm’s brother, Walter, joined the company. The Allied bombing air raids over Berlin intensified in 1943 and Franz moved to Schuttertal, then, after 1945, to Lahr, in the Schwarzwald region of south-western Germany. The logo of an "arrowhead" was chosen as a symbol of the passage of an electric signal in an electronic circuit. Reverb effects 140 plate reverb In 1957, EMT introduced the EMT 140 reverberation unit, an electro-mechanical reverberation device that offered an alternative to the spring reverbs and echo chambers of the era. The EMT 140 utilized a very thin 1 meter by 2 meter steel plate su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vinyl Disc Noise Reduction System
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph (or "gramophone", "turntable", or "record player"). Records have been produced in different formats with playing times ranging from a few minutes to around 30 minutes per side. For about half a century, the discs were commonly made from shellac and these records typically ran at a rotational speed of 78 rpm, giving it the nickname "78s" ("seventy-eights"). After the 1940s, "vinyl" records made from polyvinyl chloride (PVC) became standard replacing the old 78s and remain so to this day; they have since been produced in various sizes and speeds, most commonly 7-inch discs played at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RMS (noise Reduction)
A Dolby noise-reduction system (Dolby NR) is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. 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, which helped make high fidelity practical on cassette tapes, which used a relatively noisy tape size and speed. It is common on high-fidelity stereo tape players and recorders to the present day. Of the noise reduction systems, Dolby A and Dolby SR were developed for professional use. Dolby B, C, and S were designed for the consumer market. Aside from Dolby HX, all the Dolby variants work by companding: compressing the dynamic range of the sound during recording, and expanding it during playback. Process When recording a signal on magnetic tape, there is a low level of noise in the background ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CX (noise Reduction)
CX is a noise reduction system for recorded analog audio. It was developed by CBS Laboratories (a division of CBS) in the late 1970s as a low-cost competitor to other noise reduction (NR) systems such as dbx disc and High-Com II, and was officially introduced in 1981. The name ''CX'' was derived from "Compatible eXpansion", a feature of the technique. __TOC__ Use on vinyl LP records CX was originally designed by CBS as a noise-reduction technology for vinyl LP records, similar to the earlier dbx disc (based on dbx II) and High-Com II systems, but, like the later UC system, it aimed at the lower-cost consumer mass market rather than high-end audiophile niche markets only. CX-encoded records required a special CX expander connected to a stereo system, in order to fully reproduce the CX encoded sound on the LP. However, in contrast to dbx disc and High-Com II, CX-encoded records, like UC-encoded records, could also be played without a decoder with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revival Of Vinyl Records
The vinyl revival, also known as the vinyl resurgence, is the renewed interest and increased sales of vinyl records, or gramophone records, that has been taking place in the music industry. Beginning in 2007, vinyl records experienced renewed popularity in the West and in East Asia amid steadily increasing sales, renewed interest in the record shop, and the implementation of music charts dedicated solely to vinyl. The analogue format made of polyvinyl chloride had been the main vehicle for the commercial distribution of pop music from the 1950s until the 1980s when it was largely replaced by the cassette tape and then the compact disc (CD). After the turn of the millennium, CDs were partially replaced by digital downloads and then streaming services. However in the midst of this vinyl record sales were increasing and was growing at a quick rate by the early 2010s, eventually reaching levels not seen since the late 1980s in some territories. Despite this, records still make up onl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Reunification
German reunification () was the process of re-establishing Germany as a single sovereign state, which began on 9 November 1989 and culminated on 3 October 1990 with the dissolution of the East Germany, German Democratic Republic and the integration of its re-established constituent federated states into the West Germany, Federal Republic of Germany to form Germany, present-day Germany. This date was chosen as the customary German Unity Day, and has thereafter been celebrated each year as a national day, national holiday. On the same date, East Berlin, East and West Berlin, West Berlin were also reunified into a single city, which eventually Decision on the Capital of Germany, became the capital of Germany. The East German government, controlled by the Socialist Unity Party of Germany (SED), started to falter on 2 May 1989, when the removal of Hungary's border fence with Austria opened a hole in the Iron Curtain. The border was still closely guarded, but the Pan-European Picn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philips
Koninklijke Philips N.V. (), simply branded Philips, is a Dutch multinational health technology company that was founded in Eindhoven in 1891. Since 1997, its world headquarters have been situated in Amsterdam, though the Benelux headquarters is still in Eindhoven. The company gained its royal honorary title in 1998. Philips was founded by Gerard Philips and his father Frederik, with their first products being light bulbs. Through the 20th century, it grew into one of the world's largest electronics conglomerates, with global market dominance in products ranging from kitchen appliances and electric shavers to light bulbs, televisions, cassettes, and compact discs (both of which were invented by Philips). At one point, it played a dominant role in the entertainment industry (through PolyGram). However, intense competition from primarily East Asian competitors throughout the 1990s and 2000s led to a period of downsizing, including the divestment of its lighting and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Circuit
An integrated circuit (IC), also known as a microchip or simply chip, is a set of electronic circuits, consisting of various electronic components (such as transistors, resistors, and capacitors) and their interconnections. These components are etched onto a small, flat piece ("chip") of semiconductor material, usually silicon. Integrated circuits are used in a wide range of electronic devices, including computers, smartphones, and televisions, to perform various functions such as processing and storing information. They have greatly impacted the field of electronics by enabling device miniaturization and enhanced functionality. Integrated circuits are orders of magnitude smaller, faster, and less expensive than those constructed of discrete components, allowing a large transistor count. The IC's mass production capability, reliability, and building-block approach to integrated circuit design have ensured the rapid adoption of standardized ICs in place of designs using discre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potentiometer
A potentiometer is a three- terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. It is also used in speed control of fans. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load. Nomenclature Some terms in the electronics industry used to describe certain types of potentiometers are: * Pot: ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
