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Guitar Tech
A guitar technician (or guitar tech) is a member of a music ensemble's road crew who maintains and sets up the musical equipment for one or more guitarists. Depending on the type and size of band, the guitar tech may be responsible for stringing, tuning, and adjusting electric guitars and acoustic guitars, and maintaining and setting up guitar amplifiers and other related electronic equipment such as effect pedals. Once the guitar equipment has been set up onstage, the guitar tech does a soundcheck to ensure that the equipment is working well. If there are any problems, the guitar tech replaces or repairs the faulty components or equipment. Since guitar techs need to soundcheck the instruments and amplifiers, they must have basic guitar-playing skills, a musical "ear" for tuning, and a familiarity with the way guitars, amplifiers, and effect pedals are supposed to sound in the style of music of their band. Guitar techs learn their craft either "on the job", by working in a range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expo Pink Floyd - Gilmour Effects Rack
An expo is a trade exposition. It may also refer to: Events and venues * World's fair, a large international public exposition * Singapore Expo, convention and exposition venue ** Expo Axis, one of the world's largest membrane roofs, constructed for the 2010 Shanghai Expo ** Expo MRT station, part of the Singapore MRT Changi Airport Extension, built to handle fluctuating passenger volumes due to events at the adjacent Singapore Expo * Expo Tel Aviv, convention and exhibition venue * Floriade Expo, an international exhibition and garden festival in the Netherlands Arts, entertainment, and media Music * ''Expo'' (album), a 2005 album by Robert Schneider/Marbles * ''Expo'' (Magnus Lindberg), a 2009 10-minute musical composition by Magnus Lindberg * ''Expo'' (Stockhausen), a 1970 composition for three players by Karlheinz Stockhausen Other arts, entertainment, and media * ''Expo'' (magazine), a Swedish anti-fascist magazine * Expo Channel, a home shopping channel in Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ring Modulator
In electronics, ring modulation is a signal processing function, an implementation of frequency mixing, in which two signals are combined to yield an output signal. One signal, called the carrier, is typically a sine wave or another simple waveform; the other signal is typically more complicated and is called the input or the modulator signal. The ring modulator takes its name from the original implementation in which the analog circuit of diodes takes the shape of a ring, a diode ring. The circuit is similar to a bridge rectifier, except that all four diodes are polarized in the same direction. Ring modulation is similar to amplitude modulation, with the difference that in the latter the modulator is shifted to be positive before being multiplied with the carrier, while in the former the unshifted modulator signal is multiplied with the carrier. This has the effect that ring modulation of two sine waves having frequencies of 1,500 Hz and 400 Hz produce an output signal that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss Rod
The truss rod is a component of a guitar or other stringed instrument that stabilizes the lengthwise forward curvature (also called ''relief'') of the neck. Usually, it is a steel bar or rod that runs through the inside of the neck, beneath the fingerboard. Some are non-adjustable, but most modern truss rods have a nut at one or both ends that adjusts its tension. The first truss rod patent was applied for by Thaddeus McHugh, an employee of the Gibson company in 1921, though the idea of a "truss rod" appears in patents as early as 1908. Application A guitar neck made of wood is prone to bending due mainly to atmospheric changes, and the pull created by changing to a different gauge of guitar strings and/or different tuning. A truss rod keeps the neck straight by countering the pull of the strings and natural tendencies in the wood. When the truss rod is loosened, the neck bends slightly in response to the tension of the strings. Similarly, when tightened, the truss rod straighte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Loop (electricity)
In an electrical system, a ground loop or earth loop occurs when two points of a circuit are intended to have the same ground reference potential but instead have a different potential between them. This is typically caused when enough current is flowing in the connection between the two ground points to produce a voltage drop and cause the two points to be at different potentials. Current may be produced in a ground loop by electromagnetic induction. Ground loops are a major cause of noise, hum, and interference in audio, video, and computer systems. Wiring practices that protect against ground loops include ensuring that all vulnerable signal circuits are referenced to one point as ground. The use of differential signaling can provide rejection of ground-induced interference. The removal of ground connections to equipment in an effort to eliminate ground loops will also eliminate the protection the safety ground connection is intended to provide. Description A ground l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troubleshooting
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms. Determining the most likely cause is a process of elimination—eliminating potential causes of a problem. Finally, troubleshooting requires confirmation that the solution restores the product or process to its working state. A strategy is an organized set of activities expressing a plausible way of achieving a goal. Strategies should not be viewed as algorithms, inflexibly followed to solutions. Problem solvers behave opportunistically, adjusting activities within a strategy and changing strategies and tactics in response to information and ideas. Diagnostics In general, troubleshooting is the identification or diagnosis of "trouble" in the management flow of a sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soundcheck
A soundcheck is the preparation that takes place before a concert, speech, or similar performance to adjust the sound on the venue's sound reinforcement or public address system. The performer and the audio engineers run through a small portion of the upcoming show to ensure the venue's front of house and stage monitor systems are producing clear sound, are set at the proper volume, and have the correct mix and equalization (the latter step using the mixing console). When applied to microphones exclusively, it is more commonly (and appropriately) called a mic check. Sound checks are especially important for rock music shows and other performances that rely heavily on sound reinforcement systems. Processes Soundchecks are usually conducted prior to audience entry to the venue. The soundcheck may start with the rhythm section, and then go on to the melody section and vocalists. After technical adjustments have been completed by the sound crew, the performers leave t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DI Box
A DI unit (direct input or direct inject) is an electronic device typically used in recording studios and in sound reinforcement systems to connect a high output impedance unbalanced output signal to a low-impedance, microphone level, balanced input, usually via an XLR connector and XLR cable. DIs are frequently used to connect an electric guitar or electric bass to a mixing console's microphone input jack. Its signal comes "direct" from the source instrument without passing through the air as sound waves, and thus is isolated from other sounds and avoids effects of microphone or room acoustics. The DI performs level matching, balancing, and either active buffering or passive impedance matching or impedance bridging. DI units are typically metal boxes with input and output jacks and, for more expensive units, “ground lift” and attenuator switches. DI boxes are extensively used with professional and semi-professional PA systems, professional sound reinforcement systems and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patch Cord
A patch cable, patch cord or patch lead is an electrical or fiber-optic cable used to connect ("patch in") one electronic or optical device to another for signal routing. Devices of different types (e.g., a switch connected to a computer, or a switch to a router) are connected with patch cords. Patch cords are usually produced in many different colors so as to be easily distinguishable from each other. Types of patch cords include microphone cables, fiber optic spectroscopy cables, headphone extension cables, XLR connector, Tiny Telephone (TT) connector, RCA connector and ¼" TRS phone connector cables (as well as modular Ethernet cables), and thicker, hose-like cords ( snake cable) used to carry video or amplified signals. However, patch cords typically refer only to short cords used with patch panels. The term "patch" came from early use in telephony and radio studios, where extra equipment kept on standby could be temporarily substituted for failed devices. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tube Amplifier
A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s. Valve amplifiers can be used for applications such as guitar amplifiers, satellite transponders such as DirecTV and GPS, high quality stereo amplifiers, military applications (such as radar) and very high power radio and UHF television transmitters. History Origins Until the invention of the transistor in 1947, most practical high-frequency electronic amplifiers were made using thermionic valves. The simplest valve (named diode because it had two electrodes) was invented by John Ambrose Fleming while working for the Marconi Company in London in 1904. The diode conducted electricity in one direction only and was used as a radio detector and a rectifier. In 1906 Lee De Forest added a thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intonation (music)
In music, intonation is the pitch accuracy of a musician or musical instrument. Intonation may be flat, sharp, or both, successively or simultaneously. In vocal music, intonation also signifies the singing of an opening phrase. Interval, melody, and harmony The lower or upper pitch of an interval may be sharp or flat, or both pitches of an interval. If the lower pitch is sharp or the upper pitch is flat, the interval may be said to be flat given that as a whole it is too narrow; while if the lower pitch is flat or the upper pitch is sharp, the interval may be said to be sharp given that as a whole it is too wide. Intervals are conventionally measured from the bottom, as such in an interval that is too wide the upper pitch is thus sharp. Intonation exists within the context of musical temperament, of which there are several types. However, the interval itself may be in tune, in relation to itself (i.e. both notes of the interval are in tune in relation to each other), but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plectrum
A plectrum is a small flat tool used for plucking or strumming of a stringed instrument. For hand-held instruments such as guitars and mandolins, the plectrum is often called a pick and is held as a separate tool in the player's hand. In harpsichords, the plectra are attached to the jack mechanism. Plectra wielded by hand Guitars and similar instruments A plectrum for electric guitars, acoustic guitars, bass guitars and mandolins is typically a thin piece of plastic or other material most commonly shaped like a pointed teardrop or triangle, though the size, gauge, shape and width may vary considerably. Banjo and guitar players may wear a metal or plastic thumb pick mounted on a ring, and bluegrass banjo players often wear metal or plastic fingerpicks on their fingertips. Many guitarists use fingerpicks as well. Guitar picks are made of a variety of materials, including celluloid, metal, and rarely other exotic materials such as turtle shell, but today delrin (a synthetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beer
Beer is an alcoholic beverage produced by the brewing and fermentation of starches from cereal grain—most commonly malted barley, although wheat, maize (corn), rice, and oats are also used. The grain is mashed to convert starch in the grain to sugars, which dissolve in water to form wort. Fermentation of the wort by yeast produces ethanol and carbonation in the beer. Beer is one of the oldest and most widely consumed alcoholic drinks in the world, and one of the most popular of all drinks. Most modern beer is brewed with hops, which add bitterness and other flavours and act as a natural preservative and stabilising agent. Other flavouring agents, such as gruit, herbs, or fruits, may be included or used instead of hops. In commercial brewing, natural carbonation is often replaced with forced carbonation. Beer is distributed in bottles and cans, and is commonly available on draught in pubs and bars. The brewing industry is a global business, consisting of several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
