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Acoustic Transmission Lines
An acoustic transmission line is the use of a long duct, which acts as an Waveguide (acoustics), acoustic waveguide and is used to produce or transmit sound in an undistorted manner. Technically it is the Acoustics, acoustic analogy, analog of the electrical transmission line, typically conceived as a rigid-walled duct or tube, that is long and thin relative to the wavelength of sound present in it. Examples of transmission line (TL) related technologies include the (mostly obsolete) speaking tube, which transmitted sound to a different location with minimal loss and distortion, wind instruments such as the pipe organ, woodwind and brass instrument, brass which can be modeled in part as transmission lines (although their design also involves generating sound, controlling its timbre, and coupling it efficiently to the open air), and Transmission line loudspeaker, transmission line based loudspeakers which use the same principle to produce accurate extended low Bass (sound), bass fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutaway Design Diagram Of A Transmission Line Speaker (IMF Reference Standard Professional Monitor By John Wright)
Cutaway may refer to: Technology * Cutaway (guitar), a feature of some guitar body shapes * Cutaway (industrial), the display of a manufactured product, where a portion of the exterior housing has been removed to reveal the internal components * Cutaway drawing, a type of drawing based on the design technique to cut away part of the outside to show some of the inner work * Cutaway van chassis, an incomplete vehicle for further assembly by a manufacturer of conversion vans, RVs, ambulances, etc. * Cut-away, disconnecting a parachute that has malfunctioned Film * ''Cutaway'' (2000 film), with Tom Berenger, Maxine Bahns, Stephen Baldwin and others * ''Cutaway'' (2014 film), directed by Kazik Radwanski * Cutaway (filmmaking), a film-making technique Other uses * Cutaway, a flying trapeze trick * Morning coat A tailcoat is a knee-length coat (clothing), coat characterised by a rear section of the skirt, known as the ''tails'', with the front of the skirt cut away. The tailcoat sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TL Measurement
TL or Tl may refer to: Arts and entertainment * Teens' love, Japanese erotic fiction marketed towards women * Télé Liban, a Lebanese television network * ''Turn Left'' (newspaper), Cornell University student publication Language * Tl (digraph), a digraph representing a voiceless alveolar lateral affricate in some languages * Tagalog language (ISO 639 alpha-2 code: tl) Organisations * Airnorth (IATA airline code TL), an airline * Public transport in the Lausanne Region, a transport company * ''Teknisk Landsforbund'', the Danish Union of Professional Technicians * Team Liquid, a professional gaming and eSports team and community website Science and technology * Liquidus temperature, the maximum temperature at which crystals can co-exist with the melt * Teralitre (Tl or TL), a metric unit of volume or capacity * Thallium, symbol Tl, a chemical element * Thermoluminescence dating, in geochronology * Total length in fish measurement * Transmission loss (TL), in acoustics, elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wavefront
In physics, the wavefront of a time-varying ''wave field'' is the set (locus) of all points having the same ''phase''. The term is generally meaningful only for fields that, at each point, vary sinusoidally in time with a single temporal frequency (otherwise the phase is not well defined). Wavefronts usually move with time. For waves propagating in a unidimensional medium, the wavefronts are usually single points; they are curves in a two dimensional medium, and surfaces in a three-dimensional one. For a sinusoidal plane wave, the wavefronts are planes perpendicular to the direction of propagation, that move in that direction together with the wave. For a sinusoidal spherical wave, the wavefronts are spherical surfaces that expand with it. If the speed of propagation is different at different points of a wavefront, the shape and/or orientation of the wavefronts may change by refraction. In particular, lenses can change the shape of optical wavefronts from planar to spher ... [...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] |
Infrasonic
Infrasound, sometimes referred to as low status sound, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz). Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high. The ear is the primary organ for sensing low sound, but at higher intensities it is possible to feel infrasound vibrations in various parts of the body. The study of such sound waves is sometimes referred to as infrasonics, covering sounds beneath 20 Hz down to 0.1 Hz (and rarely to 0.001 Hz). People use this frequency range for monitoring earthquakes and volcanoes, charting rock and petroleum formations below the earth, and also in ballistocardiography and seismocardiography to study the mechanics of the heart. Infrasound is characterized by an ability to get around obstacles with little dissipation. In music, acoustic waveguide methods, such as a large pipe or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irving M
Irving may refer to: People *Irving (name), including a list of people with the name Fictional characters * Irving, the main character's love interest in Cathy (comic strip) * Lloyd Irving, the main protagonist in the ''Tales of Symphonia'' video game Places Canada * Irving Nature Park, a park in Saint John, N.B. United States *Irving, California, former name of Irvington, California * Irving, Illinois * Irving, Iowa *Irving (Duluth), Minnesota *Irving, New York *Irving, Texas *Irving, Wisconsin, a town **Irving (community), Wisconsin, an unincorporated community *Irving Park, Chicago, Illinois * Irving Township, Montgomery County, Illinois * Irving Township, Michigan * Irving Township, Minnesota * Lake Irving, a lake in Minnesota Companies * Irving Group of Companies, Canadian conglomerate based in Saint John, New Brunswick, controlled by the Irving family, including: ** J. D. Irving, a conglomerate with holdings in forestry, pulp and paper, tissue, newsprint, building su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TDL Electronics
TDL may refer to: Businesses and organizations * Technical Design Labs, a former microcomputer- and software company * Texas Digital Library, a consortium of institutions * TDL Group, former company name of Tim Hortons Places * Tokyo Disneyland, Japan * Tandil Airport (IATA code), Argentina * Tundla Junction railway station (Station code), India Technology * Tactical Data Link, in military communication * Top-level domain (TLD), of the Internet Other uses * Tomodachi Life, a 2013 life simulation video game * Toxic Dose Low, in toxicology * Sur language (ISO 639-3 code: tdl), a Plateau language of Nigeria See also * Temporal difference learning (TD), a prediction method * Tunneled Direct Link Setup (TDLS) * Two Dimensional Logarithmic Search (TDLS) * Tunable diode laser absorption spectroscopy Tunable diode laser absorption spectroscopy (TDLAS, sometimes referred to as TDLS, TLS or TLAS) is a technique for measuring the concentration of certain species such as methane, water vapo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Wright (audiophile Designer)
John, Johnny, or Johnnie Wright may refer to: Arts and entertainment Literature *John Wright (poet) (1805–1843), Scottish poet *John Clifton Wright (born 1948), American sailor and author * John C. Wright (author) (born 1961), American science fiction and fantasy writer Performing arts *Johnnie Wright (1914–2011), American country musician, singer, songwriter *Johnny Wright (guitarist) (1930–1988), American blues musician *John Wright (pianist) (1934–2017), American jazz pianist *John Robert Wright (born 1942), American actor, commonly known as Bobby Wright *Johnny Wright (music manager) (born 1960), American music act manager *John Wright (musician) (born 1962), Canadian drummer *John Wright (film editor) (active since 1978), American film editor Visual arts *John Michael Wright (1617–1694), Scottish painter * John Masey Wright (1777–1866), English watercolour-painter * John William Wright (1802–1848), English painter * John Christie Wright (1889–1917), Scottish- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or "loudspeaker", comprises one or more such speaker ''drivers'', an enclosure, and electrical connections possibly including a crossover network. The speaker driver can be viewed as a linear motor attached to a diaphragm which couples that motor's movement to motion of air, that is, sound. An audio signal, typically from a microphone, recording, or radio broadcast, is amplified electronically to a power level capable of driving that motor in order to reproduce the sound corresponding to the original unamplified electronic signal. This is thus the opposite function to the microphone; indeed the ''dynamic speaker'' driver, by far the most common type, is a linear motor in the same basic configuration as the dynamic microphone which uses such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless World
''Electronics World'' (''Wireless World'', founded in 1913, and in September 1984 renamed ''Electronics & Wireless World'') is a technical magazine in electronics and RF engineering aimed at professional design engineers. It is produced monthly in print and digital formats. The editorial content of ''Electronics World'' covers the full range of electronics and RF industry activities including technology, systems, components, design, development tools, software, networking, communications tools and instrumentation. It encompasses a range of issues in the electronics and RF industry, from design through to product implementation. The features are contributed by engineers and academics in the electronics industry. The circulation is split between electronic design engineers, senior managers, and R&D professionals within areas such as communications, manufacturing, education and training, IT, medical, power, oil and gas. History The Marconi Company published the first issue of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission-line
In electrical engineering, a transmission line is a specialized cable or other structure designed to conduct electromagnetic waves in a contained manner. The term applies when the conductors are long enough that the wave nature of the transmission must be taken into account. This applies especially to radio-frequency engineering because the short wavelengths mean that wave phenomena arise over very short distances (this can be as short as millimetres depending on frequency). However, the theory of transmission lines was historically developed to explain phenomena on very long telegraph lines, especially submarine telegraph cables. Transmission lines are used for purposes such as connecting radio transmitters and receivers with their antennas (they are then called feed lines or feeders), distributing cable television signals, trunklines routing calls between telephone switching centres, computer network connections and high speed computer data buses. RF engineers commonl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thiele Small Parameters
Thiele/Small parameters (commonly abbreviated T/S parameters, or TSP) are a set of electromechanical parameters that define the specified low frequency performance of a loudspeaker driver. These parameters are published in specification sheets by driver manufacturers so that designers have a guide in selecting off-the-shelf drivers for loudspeaker designs. Using these parameters, a loudspeaker designer may simulate the position, velocity and acceleration of the diaphragm, the input impedance and the sound output of a system comprising a loudspeaker and enclosure. Many of the parameters are strictly defined only at the resonant frequency, but the approach is generally applicable in the frequency range where the diaphragm motion is largely pistonic, i.e. when the entire cone moves in and out as a unit without cone breakup. Rather than purchase off-the-shelf components, loudspeaker design engineers often define desired performance and work backwards to a set of parameters and manufactur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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