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Acoustic Transmission Line
An acoustic transmission line is the use of a long duct, which acts as an acoustic waveguide and is used to produce or transmit sound in an undistorted manner. Technically it is the acoustic 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 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 based loudspeakers which use the same principle to produce accurate extended low bass frequencies and avoid distortion. The comparison between an acoustic duct and an electrical transmission ... [...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), ''Cutaway'' (2000 film), with Tom Berenger, Maxine Bahns, Stephen Baldwin and others * Cutaway (2014 film), ''Cutaway'' (2014 film), directed by Kazik Radwanski * Cutaway (filmmaking), a film-making technique Other uses * Cutaway, a flying trapeze trick * Morning coat, also called a cutaway, a type of formal coat {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TL Phase
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] |
Infrasonic
Infrasound, sometimes referred to as low frequency sound or incorrectly subsonic (subsonic being a descriptor for "less than the speed of sound"), describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz, as defined by the ANSI/ASA S1.1-2013 standard). Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high. Although the ear is the primary organ for sensing low sound, 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 human cardiovascul ... [...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 * Irving, A recycling collecting chugger 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 for ... [...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 Other uses * To-do list * Tactical Data Link, in military communication * 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 vapor and many more, in a gaseous m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Wright (audiophile Designer)
John, Johnny, or Johnnie Wright may refer to: Academics * John Wright (doctor) (1811–1846), American doctor and botanist * John Henry Wright (1852–1908), American classical scholar *John Kirtland Wright (1891–1969), American geographer * John Farnsworth Wright (1929–2001), British economist * John P. Wright (philosopher) (born 1942), American philosopher and Emeritus Professor of Philosophy at Central Michigan University * John Paul Wright, American criminologist known for his work in biosocial criminology * John N. Wright, philosopher and Adjunct Research Fellow in Philosophy at LaTrobe University * John Wright (sociologist) (born 1946), American sociologist and Professor Emeritus of African American and African studies and English at the University of Minnesota 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker
A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. The driver is a linear motor connected to a diaphragm, which transmits the motor's movement to produce sound by moving air. An audio signal, typically originating from a microphone, recording, or radio broadcast, is electronically amplified to a power level sufficient to drive the motor, reproducing the sound corresponding to the original unamplified signal. This process functions as the inverse of a microphone. In fact, the ''dynamic speaker'' driver—the most common type—shares the same basic configuration as a dynamic microphone, which operates in reverse as a generator. The dynamic speaker was invented in 1925 by Edward W. Kellogg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless World
''Electronics World'' (''Wireless World'', founded in 1913, and in October 1983 renamed ''Electronics & Wireless World'') is a technical magazine published by Datateam Business Media Ltd that covers electronics and RF engineering and is 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. Histor ... [...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 comm ... [...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 ... [...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 manufac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meter (unit)
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of of a second, where the second is defined by a hyperfine transition frequency of caesium. The metre was originally defined in 1791 by the French National Assembly as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's polar circumference is approximately . In 1799, the metre was redefined in terms of a prototype metre bar. The bar used was changed in 1889, and in 1960 the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86. The current definition was adopted in 1983 and modified slightly in 2002 to clarify that the metre is a measure of proper length. From 1983 until 2019, the metre was formally defined as the length of the path trav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
