182 relations: A-weighting, Acoustic guitar, Acoustic location, Aircraft, AKG (company), Alan Blumlein, Alexander Graham Bell, Ambient noise level, Amphitheatre, Amplifier, Anemometer, Audio engineer, Audio Engineering Society, Audio signal, Automatic Performance Control, Bass drum, BBC, Beamforming, Bell Labs, Biasing, Blumlein pair, Broadcasting, Calibration, Capacitor, Carbon microphone, Cardioid, Computer, Concert, Contact microphone, Coulomb, Crown International, David Edward Hughes, Decibel, Diaphragm (acoustics), Diaphragm (mechanical device), Drum kit, Eavesdropping, Electret, Electric charge, Electric current, Electric guitar, Electrical impedance, Electro-Voice, Electromagnetic induction, Electromagnetic interference, Emile Berliner, Equivalent input, Espionage, Farad, Ferroelectricity, ..., Field recording, Film, Frequency, Frequency response, Gain before feedback, Garth Brooks, Geophone, Georg Neumann, Gerhard M. Sessler, Gradient, H. J. Round, Harry F. Olson, Hearing aid, High fidelity, Hydrophone, Impedance matching, Induction coil, Infrasound, Insect, Intercom, Interferometry, ITU-R 468 noise weighting, James Edward Maceo West, Janet Jackson, Johann Philipp Reis, Laser microphone, Lavalier microphone, LC circuit, Live event support, Locus (mathematics), Loudspeaker, Magnet, Magnetic field, Magnetic resonance imaging, Mains hum, Measurement microphone calibration, Megaphone, Metropolitan Opera House (Lincoln Center), Microelectromechanical systems, Microphone, Microphone connector, Microphone practice, Microphone preamplifier, Mix (magazine), National Institute of Standards and Technology, National Physical Laboratory (United Kingdom), Noise floor, Noise-canceling microphone, Nominal impedance, Ohm, Optical fiber, Optical path length, Parabolic antenna, Parabolic microphone, Parabolic reflector, Pascal (unit), Patent caveat, Perimeter, Perpendicular, Personal computer, Phantom power, Phase (waves), Phone connector (audio), Physikalisch-Technische Bundesanstalt, Piezoelectricity, Plasma speaker, Police, Potassium sodium tartrate, Power (physics), Preamplifier, Pressure, Primary standard, Proximity effect (audio), Public address system, Radio, Radio pack, Røde Microphones, RC circuit, RCA Type 77-DX microphone, Recording studio, Reginald Fessenden, Repeater, Ribbon microphone, Robert Hooke, Satellite dish, Scalar (physics), Seeking Alpha, Sennheiser, Sensitivity (electronics), Shock mount, Shure, Shure SM57, Shure SM58, Signal, Sound, Sound intensity, Sound level meter, Sound pressure, Sound recording and reproduction, Sound reinforcement system, Speech recognition, Stage monitor system, Standard Telephones and Cables, Subcutaneous tissue, Surround sound, Tandem, Telephone, Television, The New York Times, Thomas Edison, Throat microphone, Tin can telephone, Total harmonic distortion, Transducer, Transformer, Transistor, Transmitter, Tube sound, Tweeter, Two-way radio, Universal Audio, USB, Vacuum tube, Valve microphone, Vibration, Voice over IP, Volt, Voltage, Walkie-talkie, Wireless microphone, Woofer, XLR connector. Expand index (132 more) » « Shrink index
A-weighting is the most commonly used of a family of curves defined in the International standard IEC 61672:2003 and various national standards relating to the measurement of sound pressure level.
An acoustic guitar is a guitar that produces sound acoustically by transmitting the vibration of the strings to the air—as opposed to relying on electronic amplification (see electric guitar).
Acoustic location is the use of sound to determine the distance and direction of its source or reflector.
An aircraft is a machine that is able to fly by gaining support from the air.
AKG Acoustics (originally Akustische und Kino-Geräte Gesellschaft m.b.H., Acoustic and Cinema Equipment) is an Austrian acoustics company and manufacturer founded in 1947 by Dr.
Alan Dower Blumlein (29 June 1903 – 7 June 1942) was an English electronics engineer, notable for his many inventions in telecommunications, sound recording, stereophonic sound, television and radar.
Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with inventing and patenting the first practical telephone.
In atmospheric sounding and noise pollution, ambient noise level (sometimes called background noise level, reference sound level, or room noise level) is the background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source.
An amphitheatre or amphitheater is an open-air venue used for entertainment, performances, and sports.
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current).
An anemometer is a device used for measuring the speed of wind, and is also a common weather station instrument.
An audio engineer (also sometimes recording engineer or a vocal engineer) helps to produce a recording or a performance, editing and adjusting sound tracks using equalization and audio effects, mixing, reproduction, and reinforcement of sound.
Established in 1948, the Audio Engineering Society (AES) draws its membership from engineers, scientists, other individuals with an interest or involvement in the professional audio industry.
An audio signal is a representation of sound, typically as an electrical voltage for analog signals and a binary number for digital signals.
Automatic Performance Control (APC) was the first engine knock and boost control system that was introduced on turbo charged Saab H engines in 1982 and was fitted to all subsequent 900 Turbos through 1993 (and 1994 convertibles), as well as 9000 Turbos through 1989.
A bass drum, or kick drum, is a large drum that produces a note of low definite or indefinite pitch.
The British Broadcasting Corporation (BBC) is a British public service broadcaster.
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception.
Nokia Bell Labs (formerly named AT&T Bell Laboratories, Bell Telephone Laboratories and Bell Labs) is an American research and scientific development company, owned by Finnish company Nokia.
Biasing in electronics means establishing predetermined voltages or currents at various points of an electronic circuit for the purpose of establishing proper operating conditions in electronic components.
Blumlein pair is the name for a stereo recording technique invented by Alan Blumlein for the creation of recordings that, upon replaying through headphones or loudspeakers, recreate the spatial characteristics of the recorded signal.
Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a one-to-many model.
Calibration in measurement technology and metrology is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy.
A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.
The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal.
A cardioid (from the Greek καρδία "heart") is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius.
A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
A concert is a live music performance in front of an audience.
A contact microphone, also known as a pickup or a piezo, is a form of microphone that senses audio vibrations through contact with solid objects.
The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.
Crown International, or Crown Audio, is an American manufacturer of audio electronics, and is a subsidiary of Harman International Industries, which has been part of Samsung Electronics since 2017.
David Edward Hughes (16 May 1831 – 22 January 1900), was a British-American inventor, practical experimenter, and professor of music known for his work on the printing telegraph and the microphone.
The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.
In the field of acoustics, a diaphragm is a transducer intended to inter-convert mechanical vibrations to sounds, or vice versa.
In mechanics, a diaphragm is a sheet of a semi-flexible material anchored at its periphery and most often round in shape.
A drum kit — also called a drum set, trap set, or simply drums — is a collection of drums and other percussion instruments, typically cymbals, which are set up on stands to be played by a single player, with drumsticks held in both hands, and the feet operating pedals that control the hi-hat cymbal and the beater for the bass drum.
Eavesdropping is secretly or stealthily listening to the private conversation or communications of others without their consent.
Electret (formed of electr- from "electricity" and -et from "magnet") is a dielectric material that has a quasi-permanent electric charge or dipole polarisation.
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
An electric current is a flow of electric charge.
An electric guitar is a guitar that uses one or more pickups to convert the vibration of its strings into electrical signals.
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
Electro-Voice (commonly referred to as EV) is an American manufacturer of audio equipment, including microphones, amplifiers, and loudspeakers, focused on pro audio applications such as sound reinforcement and consumer electronics such as car audio.
Electromagnetic or magnetic induction is the production of an electromotive force (i.e., voltage) across an electrical conductor in a changing magnetic field.
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.
Emile Berliner (May 20, 1851 – August 3, 1929), originally Emil Berliner, was a German-born American inventor.
Equivalent input (also input-referred or input-related), is a method of referring to the signal or noise level at the output of a system as if it were an input to the same system.
Espionage or spying, is the act of obtaining secret or confidential information without the permission of the holder of the information.
The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge.
Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field.
Field recording is the term used for an audio recording produced outside a recording studio, and the term applies to recordings of both natural and human-produced sounds.
A film, also called a movie, motion picture, moving pícture, theatrical film, or photoplay, is a series of still images that, when shown on a screen, create the illusion of moving images.
Frequency is the number of occurrences of a repeating event per unit of time.
Frequency response is the quantitative measure of the output spectrum of a system or device in response to a stimulus, and is used to characterize the dynamics of the system.
In live sound mixing, gain before feedback (GBF) is a practical measure of how much a microphone can be amplified in a sound reinforcement system before causing audio feedback.
Troyal Garth Brooks (born February 7, 1962) is an American singer and songwriter.
A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station.
Georg Neumann GmbH (Neumann), founded in 1928 and based in Berlin, Germany, is a prominent manufacturer of professional recording microphones.
Gerhard M. Sessler (born 15 February 1931 in Rosenfeld, Baden-Württemberg, Germany) is a German inventor and scientist.
In mathematics, the gradient is a multi-variable generalization of the derivative.
Captain Henry Joseph Round (2 June 1881 – 17 August 1966) was an English engineer and one of the early pioneers of radio.
Harry Ferdinand Olson (December 28, 1901 – April 1, 1982) was a prominent engineer at RCA Victor and a pioneer in the field of 20th century acoustical engineering.
A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss.
High fidelity (often shortened to hi-fi or hifi) is a term used by listeners, audiophiles and home audio enthusiasts to refer to high-quality reproduction of sound.
A hydrophone (Ancient Greek ὕδωρ.
In electronics, impedance matching is the practice of designing the input impedance of an electrical load or the output impedance of its corresponding signal source to maximize the power transfer or minimize signal reflection from the load.
An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Ruhmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply.
Infrasound, sometimes referred to as low-frequency sound, is sound that is lower in frequency than 20 Hz or cycles per second, the "normal" limit of human hearing.
Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.
An intercom (intercommunication device), talkback or doorphone is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network (Azori 2016).
Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed causing the phenomenon of interference in order to extract information.
ITU-R 468 (originally defined in CCIR recommendation 468-4; sometimes referred to as CCIR-1k) is a standard relating to noise measurement, widely used when measuring noise in audio systems.
James Edward Maceo West (born February 10, 1931 in Farmville, Prince Edward County, Virginia) is an African American inventor and acoustician.
Janet Damita Jo Jackson (born May 16, 1966) is an American singer, songwriter, dancer, and actress.
Johann Philipp Reis (January 7, 1834 – January 14, 1874) was a self-taught German scientist and inventor.
A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object.
A lavalier microphone or lavalier (also known as a lav, lapel mic, clip mic, body mic, collar mic, neck mic or personal mic) is a small microphone used for television, theatre, and public speaking applications in order to allow for hands-free operation.
An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together.
Live performance events including theater, music, dance, opera, use production equipment and services such as staging, scenery, mechanicals, sound, lighting, video, special effects, transport, packaging, communications, costume and makeup to convince live audience members that there is no better place that they could be at the moment.
In geometry, a locus (plural: loci) (Latin word for "place", "location") is a set of all points (commonly, a line, a line segment, a curve or a surface), whose location satisfies or is determined by one or more specified conditions.
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound.
A magnet is a material or object that produces a magnetic field.
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body in both health and disease.
Mains hum, electric hum, or power line hum is a sound associated with alternating current at the frequency of the mains electricity.
In order to take a scientific measurement with a microphone, its precise sensitivity must be known (in volts per pascal).
A megaphone, speaking-trumpet, bullhorn, blowhorn, or loudhailer is usually a portable or hand-held, cone-shaped acoustic horn used to amplify a person’s voice or other sounds and direct it in a given direction.
The Metropolitan Opera House (also known as The Met) is an opera house located on Broadway at Lincoln Square on the Upper West Side of Manhattan in New York City.
Microelectromechanical systems (MEMS, also written as micro-electro-mechanical, MicroElectroMechanical or microelectronic and microelectromechanical systems and the related micromechatronics) is the technology of microscopic devices, particularly those with moving parts.
A microphone, colloquially nicknamed mic or mike, is a transducer that converts sound into an electrical signal.
Many different electrical connectors have been used to connect microphones to audio equipment—including PA systems, radios, tape recorders, and numerous other devices.
There exist a number of well-developed microphone techniques used for miking musical, film, or voice sources.
The term microphone preamplifier can either refer to the electronic circuitry within a microphone, or to a separate device or circuit that the microphone is connected to.
Mix magazine is a periodical, billing itself as "the world's leading magazine for the professional recording and sound production technology industry".
The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.
The National Physical Laboratory (NPL) is the national measurement standards laboratory for the United Kingdom, based at Bushy Park in Teddington, London, England.
In signal theory, the noise floor is the measure of the signal created from the sum of all the noise sources and unwanted signals within a measurement system, where noise is defined as any signal other than the one being monitored.
A noise-canceling microphone is a microphone that is designed to filter ambient noise from the desired sound, which is especially useful in noisy environments.
Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device.
The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.
An optical fiber or optical fibre is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair.
In optics, optical path length (OPL) or optical distance is the product of the geometric length of the path light follows through the system, and the index of refraction of the medium through which it propagates(OP.
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves.
A parabolic microphone is a microphone that uses a parabolic reflector to collect and focus sound waves onto a transducer, in much the same way that a parabolic antenna (e.g., satellite dish) does with radio waves.
A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves.
The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.
A patent caveat, often shortened to caveat, was a legal document filed with the United States Patent Office.
A perimeter is a path that surrounds a two-dimensional shape.
In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees).
A personal computer (PC) is a multi-purpose computer whose size, capabilities, and price make it feasible for individual use.
Phantom power, in the context of professional audio equipment, is DC electric power transmitted through microphone cables to operate microphones that contain active electronic circuitry.
Phase is the position of a point in time (an instant) on a waveform cycle.
A phone connector, also known as phone jack, audio jack, headphone jack or jack plug, is a family of electrical connectors typically used for analog audio signals.
The Physikalisch-Technische Bundesanstalt (PTB) is the national metrology institute of the Federal Republic of Germany, with scientific and technical service tasks.
Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics, and biological matter such as bone, DNA and various proteins) in response to applied mechanical stress.
Plasma speakers or ionophones are a form of loudspeaker which varies air pressure via a high-energy electrical plasma instead of a solid diaphragm.
A police force is a constituted body of persons empowered by a state to enforce the law, to protect people and property, and to prevent crime and civil disorder.
Potassium sodium tartrate tetrahydrate, also known as Rochelle salt, is a double salt of tartaric acid first prepared (in about 1675) by an apothecary, Pierre Seignette, of La Rochelle, France.
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
A preamplifier (preamp or "pre") is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
A primary standard in metrology is a standard that is sufficiently accurate such that it is not calibrated by or subordinate to other standards.
The proximity effect in audio is an increase in bass or low frequency response when a sound source is close to a directional or cardioid microphone.
A public address system (PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment.
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
A radio pack is mainly used for musicians such as guitarists and singers for live performances.
. Rode Microphones LLC is an Australian-based designer and manufacturer of microphones, related accessories and audio software.
A resistor–capacitor circuit (RC circuit), or RC filter or RC network, is an electric circuit composed of resistors and capacitors driven by a voltage or current source.
The RCA Type 77-DX microphone is a poly-directional ribbon microphone, or pressure-gradient microphone, introduced by the RCA Corporation in 1954.
A recording studio is a specialized facility for sound recording, mixing, and audio production of instrumental or vocal musical performances, spoken words, and other sounds.
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father.
In telecommunications, a repeater is an electronic device that receives a signal and retransmits it.
A ribbon microphone, also known as a ribbon velocity microphone, is a type of microphone that uses a thin aluminum, duraluminum or nanofilm of electrically conductive ribbon placed between the poles of a magnet to produce a voltage by electromagnetic induction.
Robert Hooke FRS (– 3 March 1703) was an English natural philosopher, architect and polymath.
A satellite dish is a dish-shaped type of parabolic antenna designed to receive or transmit information by radio waves to or from a communication satellite.
A scalar or scalar quantity in physics is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement.
Seeking Alpha is a crowd-sourced content service for financial markets.
Sennheiser electronic GmbH & Co.
The sensitivity of an electronic device, such as a communications system receiver, or detection device, such as a PIN diode, is the minimum magnitude of input signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria.
In a variety of applications, a shock mount or isolation mount is a mechanical fastener that connects two parts elastically.
Shure Incorporated is an American audio products corporation.
The Shure SM57 is a low-impedance, cardioid, dynamic microphone made by Shure Incorporated and commonly used in live sound reinforcement and studio recording.
The Shure SM58 is a professional cardioid dynamic microphone, commonly used in live vocal applications.
A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
Sound intensity level also known as acoustic intensity is defined as the power carried by sound waves per unit area in a direction perpendicular to that area.
A sound level meter is used for acoustic (sound that travels through air) measurements.
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave.
Sound recording and reproduction is an electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects.
A sound reinforcement system is the combination of microphones, signal processors, amplifiers, and loudspeakers in enclosures all controlled by a mixing console that makes live or pre-recorded sounds louder and may also distribute those sounds to a larger or more distant audience.
Speech recognition is the inter-disciplinary sub-field of computational linguistics that develops methodologies and technologies that enables the recognition and translation of spoken language into text by computers.
Foldback or a stage monitor system is the use of performer-facing loudspeaker cabinets known as monitor speakers or stage monitors on stage during live music performances in which a PA system or sound reinforcement system is used to amplify the performers' singing, music, speech and other sounds for the audience.
Standard Telephones and Cables Ltd (later STC plc) was a British telephone, telegraph, radio, telecommunications, and related equipment R&D manufacturer.
The subcutaneous tissue, also called the hypodermis, hypoderm, subcutis, or superficial fascia, is the lowermost layer of the integumentary system in vertebrates.
Surround sound is a technique for enriching the sound reproduction quality of an audio source with additional audio channels from speakers that surround the listener (surround channels).
Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction.
A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.
Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound.
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor.
A throat microphone, also laryngophone, is a type of contact microphone that absorbs vibrations directly from the wearer's throat by way of single or dual sensors worn against the neck.
A tin can telephone is a type of acoustic (non-electrical) speech-transmitting device made up of two tin cans, paper cups or similarly shaped items attached to either end of a taut string or wire.
The total harmonic distortion (THD) is a measurement of the harmonic distortion present in a signal and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency.
A transducer is a device that converts energy from one form to another.
A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.
In electronics and telecommunications, a transmitter or radio transmitter is an electronic device which produces radio waves with an antenna.
Tube sound (or valve sound) is the characteristic sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier.
A tweeter or treble speaker is a special type of loudspeaker (usually dome or horn-type) that is designed to produce high audio frequencies, typically from around 2,000 Hz to 20,000 Hz (generally considered to be the upper limit of human hearing).
A two-way radio is a radio that can do both transmit and receive a signal (a transceiver), unlike a broadcast receiver which only receives content.
Universal Audio was a designer and manufacturer of recording, mixing and audio signal processing hardware for the professional recording studio, live sound and broadcasting fields.
USB (abbreviation of Universal Serial Bus), is an industry standard that was developed to define cables, connectors and protocols for connection, communication, and power supply between personal computers and their peripheral devices.
In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.
A valve microphone is a condenser microphone which uses a valve amplifier rather than a transistor circuit.
Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point.
Voice over Internet Protocol (also voice over IP, VoIP or IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.
A walkie-talkie (more formally known as a handheld transceiver, or HT) is a hand-held, portable, two-way radio transceiver.
A wireless microphone is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated.
A woofer or bass speaker is a technical term for loudspeaker driver designed to produce low frequency sounds, typically from 40 Hz up to 500 Hz.
The XLR connector is a style of electrical connector, primarily found on professional audio, video, and stage lighting equipment.
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