1-10 of 16 results  for:

  • Audio Engineering x
Clear all

Article

Ableton  

Brandon Smith

Music production software company based in Berlin, with a branch in New York. Ableton (Ableton AG) was founded in 1999 by Gerhard Behles, Robert Henke, and Bernd Roggendorf. Its main product is a computer program called Live, which was released in 2001. This is a digital audio workstation (DAW) environment for recording audio and MIDI with an emphasis on working in real time, essentially allowing the user to play the software as an instrument. Practically any operation can be controlled via MIDI. Since its introduction, Live has become popular among electronic music artists for its ability to allow spontaneous manipulation of audio in a performance situation. Many manufacturers of MIDI controllers have developed control surfaces for Live, bridging the gap between software and hardware.

Live is equally suited to arranging and production applications, with abilities similar to those of other popular recording platforms such as Cubase and Pro Tools. It can run in tandem with most other DAW systems using the ReWire protocol by Steinberg Media Technologies (the creators of Cubase), allowing Live and other programs to share audio and MIDI information with a host DAW. In many ways Live has redefined the role software and computers in general have had in music creation and production. It was among the first programs able automatically to ‘beat match’ (synchronize audio files with different tempos). An integrated Max/MSP platform (a visual programming language) allows users to program their own virtual instruments by linking together pre-made blocks or ‘objects’. Ableton also produces virtual instrument plug-ins and libraries of samples for their Live platform....

Article

Auxeto  

Laurence Libin

[auxetophone]

Pneumatic-mechanical device for amplifying sound outdoors and in large indoor spaces. It was patented in England in 1898 and 1901 by the aviation engineer and acoustician Horace Short (1872–1917) and developed (initially as a hobby) from 1903 by the mechanical engineer and inventor Sir Charles Algernon Parsons (1851–1931), who had purchased the patents. It was intended for use with gramophones and was also applied to instruments for live performance, like the earlier diaphragm and horn amplification system of Augustus Stroh. As applied to the gramophone, the auxeto modulates a flow of compressed air by means of a grid-valve (a reed assembly operating somewhat like the reeds of a harmonica). As the needle moves along the record groove, a metal comb affixed to the stylus bar opens or closes slots in the valve seat, imparting powerful pulses of air corresponding to the sounds originally recorded; these sound pulses are then projected through a large horn. The air compressor, which feeds a cylindrical pressure tank, is driven by an electric motor, and the air is filtered to remove particles that might clog the valve. When less volume is required or no electricity is available, a so-called soundbox can be substituted for the auxeto, allowing the gramophone to operate normally....

Article

Brandon Smith

Creation of new connections inside sound-generating electronic devices to provide sounds unintended by their original designers. A wide range of effects can be achieved, and extra tactile controls such as potentiometers, switches, photocells, and body contacts can be added to control the new effects, the most frequent modification being for pitch control. Often various ‘bends’ are found accidentally by arbitrarily connecting two different points on the circuit board. Circuit bending has attracted considerable attention among persons interested in experimental electronic music and synthesizers, and it can be achieved with limited electronics knowledge and construction skills. Because circuit bending calls for unauthorised, sometimes radical changes to the circuitry’s original pathways, it risks damaging or destroying the device being modified. Toys are often exploited for circuit bending because of their ubiquity and low cost and the small risk of electrical shock from their low voltage. Battery-operated toys such as the Texas Instruments Speak n’ Spell and the Casio SK-1 have latent sonic potential and are prime targets for tinkerers seeking such sounds inexpensively or at no cost and because they tend to ‘glitch’ easily, spewing out fragmented bits of digital speech and strange sounds. Examples of circuit-bent creations include electronic keyboards, sound modules, drum machines, effects pedals, and karaoke machines. Video bending uses these same methods to modify video-game consoles to make abstract visual patterns in addition to novel sounds....

Article

Hugh Davies

[orgue des ondes (Fr.: ‘organ of the waves’)]

Electronic organ designed by the organ builder Edouard Eloi Coupleux of Tourcoing and the radio engineer Joseph Armand Givelet in Paris in 1929–30, and produced under patents of 1934 and 1936. It was the first successful polyphonic instrument based on electronic oscillators (demonstrated already in Givelet’s monophonic piano radioélectrique in 1927) and the first electronic organ to be in regular use. In 1931 Charles Tournemire played the Coupleux-Givelet organ at the church of Villemomble. Up to the mid-1930s at least four were installed in churches in France and Switzerland and one at the Poste Parisien broadcasting station (hence the instrument’s alternative name). The prototype contained only 12 oscillators, the signals from which were routed through frequency doublers; this rather primitive system in which each oscillator signal could be transposed only to other octave positions did not permit the simultaneous sounding of octaves. The finished organs normally had two manuals, with one easily tunable oscillator for each note, necessitating a total of 250 to 700 valves. The Poste Parisien organ (...

Article

Alex U. Case

[DAW]

A digital audio workstation (DAW) comprises a combination of computer hardware and software used for the computer-based creation of recorded music through multitrack production. It typically consists of a multitrack recorder, a mixer, and a diversity of signal processors, such as faders, pan pots, equalizers, compressors, delays, and reverbs. The DAW unites within a desktop or laptop computer the full functionality that the analog recording studio offers across many separate components, including tape machines, mixing consoles, and effects devices.

While the DAW possesses all of the essential functional capabilities of a stand-alone recording studio entirely within the computer environment, it generally permits interfacing with additional tools. Third-party software called plug-ins may be incorporated into the DAW through industry standard protocols. This enables the DAW to leverage the features and qualities of different tools from a variety of software developers. On the one hand, audio interfaces possessing digital-to-analog converters enable the audio to leave the DAW platform and have the benefit of any available external, outboard analog signal processors. On the other hand, analog-to-digital converters return analog-processed audio back into the DAW. In this way, the DAW takes advantage of both new and legacy analog recording studio devices, providing the user the best of both worlds, analog and digital....

Article

Hugh Davies

revised by Anne Beetem Acker

[Elektronmusikstudion] (Swed.: ‘electronic music studio’)

The Swedish national centre for electronic music and sound art, in Stockholm. It was preceded by a smaller studio run by the Worker’s Society of Education from 1960. EMS was established by Swedish Radio in 1964 under music director and composer Karl Birger Blomdahl (1916–68), who hired the composer and performer Knut Wiggen (b 1927) to take charge of creating the studios. In 1965 an old radio theatre studio called the klangverstan (‘sound workshop’) opened for composers. Construction of a new facility was begun, but after Blomdahl’s death EMS became independent, funded only in small part by Swedish Radio, and otherwise by Fylkingen (a society for experimental music and arts) and the Swedish Royal Academy of Music.

Wiggen envisioned EMS as both a place to produce electro-acoustic music and a research institution that would give the composer ‘the possibility of describing sounds in psychological terms’. The studio was equipped accordingly. The sound sculpture ...

Article

Anne Beetem Acker

[envelope shaper]

Electronic circuit that controls a voltage-controlled amplifier (VCA), voltage-controlled filter (VCF), or voltage-controlled oscillator (VCO), allowing the output behaviour (or envelope, as the output curve is known in electronics) of a sound signal to be shaped over time. When controlling a VCA the envelope generator shapes volume; controlling a VCF affects timbre, while mixing signals to a VCA and VCO produces a frequency contour. The most common envelope shaper, the ADSR (Attack, Decay, Sustain, Release), generates a four-segment signal that allows for setting the rise and fall rates for the attack, decay, and release, and setting a level for the sustain. Some ADSRs allow each segment to be scaled proportionately to an input signal such as key velocity. Advanced envelope generators, such as a UEG (universal event generator), can have hundreds of segments for which time and slope can be set, and provide a means to repeat, skip, or abbreviate a segment....

Article

GAME  

Hugh Davies, Annette Vande Gorne and Anne Beetem Acker

[Générateur automatique de musique électronique] (Fr.: ‘automatic electronic music generator’)

Composition machine developed by the Belgian composer Léo Küpper (b Nidrum, 16 April 1935) in Brussels between 1968 and 1978. Küpper had begun experimenting with electronic music in 1959 while a student at Liège University, using two Brüel & Kjaer oscillators and a tape recorder. In 1962 he began work in Brussels at APELAC, the first Belgian electronic music studio, and joined the musical sound-effects department of the RTBF. The GAME system formed the basis of Küpper’s electronic music studio in Brussels, the Studio de Recherches et de Structurations Electroniques Auditives, which he founded in 1967. The first version of the GAME, completed in 1971, was used in concerts and installations. It consisted of 60 separate modules, using a combination of analogue and digital techniques, which could be freely selected and combined. The modules were programmed in an upright console approximately 4 × 2 metres by making a large number of patchcord interconnections, so that the surface of the console was festooned with cables. Most of the controls operated during a performance were placed in front of the console....

Article

Murray Campbell

An enclosed volume communicating with the atmosphere through a relatively small aperture or neck. Such a cavity has the property of resonating over a narrow range of frequencies; the frequency of maximum response was derived by the 19th-century acoustician Hermann von Helmholtz, and is known as the Helmholtz resonance frequency.

An everyday example of a Helmholtz resonator is provided by an empty bottle. An increase in the air pressure outside the bottle tends to push the air in the neck further into the bottle. This compresses the air in the main volume of the bottle, resulting in a force tending to push the air back out of the neck. The plug of air in the neck bounces on the main volume, like a weight bouncing on a spring. The natural bouncing frequency is the Helmholtz resonance frequency; a note of the corresponding pitch can be sounded by blowing across the open end of the bottle....

Article

Anne Beetem Acker

Unique MIDI synthesizer controlled by a gamma-ray spectrometer designed and built by Jerry Chamkis (b Los Angeles, CA, 1942). He studied physics at the University of California, Santa Barbara, but disillusioned by the emphasis on military applications, he left and became chief engineer at a radio station in Houston, Texas. In 1975, he formed AERCO (Acme Electric Robot Company), where he initially produced peripheral devices and memory expansions for small computers and then moved on to computer-controlled hot wire cutting systems, broadcast equipment, and microphone preamplifiers. Since about 2000 he has concentrated on various art projects such as the Kosmophone.

The gamma-ray spectrometer used for the Kosmophone operates at 3–7 million electron volts, the energy coming primarily from very high-energy cosmic radiation. Although mostly stopped by the atmosphere, gamma rays produce secondary energy emissions that the Kosmophone detects, sending the information to a synthesizer MIDI control port. The radiation pulses are processed and digitized to 12 bits, 7 of which are sent as the MIDI pitch value and 4 as the MIDI velocity value. The first Kosmophone was built from standard nuclear instrumentation modules and custom circuit boards. The second version is a self-contained portable unit with an integral detector, a self-contained nuclear analyser, an Alesis QSR synthesizer, and a 100-watt-per-channel amplifier. It was first shown publicly at the Electricity and Me show at Gallery Lombardi in Austin, Texas, in ...