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Radiodrum

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The Radiodrum or radio-baton is a musical instrument played in three-dimensional space using two mallets (snare drum sticks with wires). It was developed at Bell Labs in the 1980s (and patented), originally to be a three-dimensional computer mouse . Currently it is used as a musical instrument similar to a MIDI controller in the sense that it has no inherent sound or effect, but rather produces control signals that can be used to control sound-production (or other effect.) As such, it can be thought of as a general telepresence input device. The radiodrum works in a similar way to the theremin , which uses magnetic capacitance to locate the position of the drumsticks. The two mallets act as antennas transmitting on slightly different frequencies and the drum surface acts as a set of antennas. The combination of the antenna signals is used to derive X, Y and Z.

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29-527: The radiodrum was designed by Bob Boie . Max Mathews recognized its musical potential, mainly focusing on a conducting paradigm, and developed several other versions of it. Andrew Schloss pioneered its use as a percussion device and further developed its software and hardware. The radiodrum has been used to control visual effects, and even robotic acoustic instruments like the Yamaha Disklavier and Trimpin instruments. The latest version (as of 2013) of

58-868: A fellow in the American Academy of Arts and Sciences , the Acoustical Society of America , the IEEE , and the Audio Engineering Society . He received a Silver Medal in Musical Acoustics from the Acoustical Society of America , and the Chevalier de l' ordre des Arts et Lettres , République Française. The Max portion of the software package Max/MSP is named after him (the MSP portion is named for Miller Puckette , who teaches at UC San Diego ). Mathews died on

87-512: A musical keyboard, knobs, and rotating joysticks to capture realtime performance. Although MUSIC was not the first attempt to generate sound with a computer (an Australian CSIRAC computer played tunes as early as 1951), Mathews fathered generations of digital music tools. He described his work in parental terms, in the following excerpt from "Horizons in Computer Music", March 8–9, 1997, Indiana University : Computer performance of music

116-443: A way of playing orchestral accompaniments. Singers often prefer to play their own accompaniments. Recently I have added improvisational options which make it easy to write compositional algorithms . These can involve precomposed sequences, random functions, and live performance gestures. The algorithms are written in the C language . We have taught a course in this area to Stanford undergraduates for two years. To our happy surprise,

145-695: The Bohlen-Pierce scale . This article relating to electronic musical instruments is a stub . You can help Misplaced Pages by expanding it . Max Mathews Max Vernon Mathews (November 13, 1926 in Columbus , Nebraska , US – April 21, 2011 in San Francisco , CA , US) was an American pioneer of computer music . Max Vernon Mathews was born in Columbus, Nebraska, to two science schoolteachers. His father in particular taught physics, chemistry and biology in

174-721: The CSIRO 's decision that computing research was outside its purview, the machine was transferred from its home at the Radiophysics Laboratory at the CSIRO in Sydney, to the University of Melbourne , where it formed Australia's only academic computing facility until late 1956. Many pioneers of computer use in Australia had their first exposure to computing there. In 1964, CSIRAC was shut down for

203-581: The Peru High School of Nebraska, where he was also the principal. His father allowed him to learn and play in the physics, biology and chemistry laboratories, where he enjoyed making lots of things from motors to mercury barometers. At the age of 9, when students are usually introduced to algebra, he started to study by himself the subject with few other students. That was because the vast majority of population there were farmers and their sons weren't interested about learning algebra, since it isn't useful for

232-772: The Think Ahead gallery. A comprehensive source of information about the CSIRA collection, its contributors and related topics is available from Museums Victoria on their Collections website. The CSIRAC was constructed by a team led by Trevor Pearcey and Maston Beard, working in large part independently of similar efforts across Europe and the United States , and ran its first test program (multiplication of numbers) sometime in November 1949. In restricted operation from late 1950, publicly demonstrated and operational in 1951. The machine

261-633: The advent of fast, inexpensive, digital chips made real-time possible, and equally important, made it affordable. Starting with the GROOVE program in 1970, my interests have focused on live performance and what a computer can do to aid a performer. I made a controller, the Radio-Baton , plus a program, the Conductor program, to provide new ways for interpreting and performing traditional scores. In addition to contemporary composers, these proved attractive to soloists as

290-411: The basic set of arithmetic and logical operations, as well as conditional and relative jumps (making it possible to write a library of subroutines). Instructions consisted of three components: a 5-bit "destination" P1-P5, a 5-bit "source" P6-P10, and a 10-bit "address" P11-P20. For instructions that used the main store, the six bits P15-P20 selected one of the 64 logical delay lines. Bits P11-P14 determined

319-504: The cost of restoring the device, the huge number of repairs that would be required to make it safe to operate (CSIRAC used 30 kilowatts of power in operation) would detract from its historical authenticity. After being exhibited at Melbourne Museum for many years, it was relocated to Scienceworks in 2018 and is now on permanent display in the Think Ahead gallery. CSIRAC is listed on the Victorian Heritage Register and

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348-451: The era, had no operating system . A high-level interpreted programming language called INTERPROGRAM was developed in 1960 by Geoff Hill. It was similar to early forms of BASIC , which was designed in 1963 for the 20-bit transistorized GE-200 series . In 1950 CSIRAC was used to play music, the first known use of a digital computer for the purpose. The music was never recorded, but it has been accurately reconstructed. In 1955, with

377-532: The everyday work. In the same way he studied calculus, but he never graduated from high school. After a period as a radar repairman in the navy, where he fell in love with electronics, Mathews decided to study electrical engineering at the California Institute of Technology and the Massachusetts Institute of Technology , receiving a Sc.D. in 1954. Working at Bell Labs , Mathews wrote MUSIC ,

406-526: The fifth stored program computer in the world. It is the oldest surviving first-generation electronic computer (the Zuse Z4 at the Deutsches Museum is older, but was electro-mechanical , not electronic ), and was the first in the world to play digital music . After being exhibited at Melbourne Museum for many years, it was relocated to Scienceworks in 2018 and is now on permanent display in

435-420: The first widely used program for sound generation, in 1957. For the rest of the century, he continued as a leader in digital audio research, synthesis , and human-computer interaction as it pertains to music performance . In 1968, Mathews and L. Rosler developed Graphic 1 , an interactive graphical sound system on which one could draw figures using a light-pen that would be converted into sound, simplifying

464-568: The last time. Its historical significance was already recognised at that stage, and it was placed in storage with plans for its later exhibition in a museum. The machine was stored in a warehouse through the 1960s and 1970s, before being set up for exhibit at Caulfield Institute of Technology (later the Caulfield Campus of Chisholm Institute of Technology , and later again the Caulfield Campus of Monash University ) from 1980 to 1992. It

493-441: The machine was performed in the form of punched 3-inch (76 mm) wide, 12-track paper tape , after experiments with punch cards proved unsatisfactory. The machine was controlled through a console which allowed programs to be stepped through one instruction at a time, and featured CRT displays which showed the contents of registers. Output was through a standard teleprinter or to punch tape. The instruction set supported

522-460: The morning of 21 April 2011 in San Francisco, California of complications from pneumonia . He was 84. He was survived by his wife, Marjorie, his three sons and six grandchildren. CSIRAC CSIRAC ( / ˈ s aɪ r æ k / ; C ommonwealth S cientific and I ndustrial R esearch A utomatic C omputer ), originally known as CSIR Mk 1 , was Australia 's first digital computer , and

551-600: The process of composing computer generated music . Also in 1970, Mathews and F. R. Moore developed the GROOVE (Generated Real-time Output Operations on Voltage-controlled Equipment) system, a first fully developed music synthesis system for interactive composition and realtime performance, using 3C/ Honeywell DDP-24 (or DDP-224) minicomputers. It used a CRT display to simplify the management of music synthesis in realtime, 12bit D/A for realtime sound playback, an interface for analog devices, and even several controllers including

580-512: The radiodrum was developed by Bob Boie and Andrew Schloss. In addition to X, Y and Z, there is an output for the derivative of Z, which is used to detect changes of direction of the mallets, enabling fine control over snare-drum rolls and other nuanced percussive techniques. In addition to works by Andrew Schloss, the instrument has been used extensively by composer David A. Jaffe , with Schloss as soloist, in works including: Other works include Richard Boulanger 's "Solemn Song for Evening", using

609-409: The speed was doubled to one cycle per instruction). The bus (termed the "digit trunk" in their design) is unusual compared to most computers in that it was serial —it transferred one bit at a time. Most of CSIRAC's approximately 2000 valves were of the types 6SN7 , 6V6 , EA50 diodes and KT66 . George Semkiw later redesigned the drum-read electronics to use germanium transistors . Input to

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638-439: The students liked learning and using C. Primarily I believe it gives them a feeling of complete power to command the computer to do anything it is capable of doing. In 1961, Mathews arranged the accompaniment of the song " Daisy Bell " for an uncanny performance by computer-synthesized human voice, using technology developed by John Kelly , Carol Lochbaum, Joan Miller and Lou Gerstman of Bell Laboratories. Author Arthur C. Clarke

667-426: The time at which 20 bits of data were written to or extracted from the delay line, and thus represented address of a word within the selected delay line. There were 32 destination gates and 32 source gates; the 10 address bits identified a data word within the store if either the source or destination required access to the store. The total number of source and destination combinations, or different instruction functions,

696-425: Was 1024, although only about 256 of these were used often. The machine had three 20-bit registers (A, B and C), two of which were involved in multiplication, one 10-bit register which could link to either half of a word, and a group of 16 20-bit registers, addressed via bits P11-P14. In addition the 20-bit program counter (S register), and the instruction register (K) were accessible. The machine, like all machines of

725-614: Was born in 1957 when an IBM 704 in NYC played a 17 second composition on the Music I program which I wrote. The timbres and notes were not inspiring, but the technical breakthrough is still reverberating. Music I led me to Music II through V. A host of others wrote Music 10, Music 360, Music 15, Csound and Cmix. Many exciting pieces are now performed digitally. The IBM 704 and its siblings were strictly studio machines – they were far too slow to synthesize music in real-time. Chowning's FM algorithms and

754-859: Was coincidentally visiting friend and colleague John Pierce at the Bell Labs Murray Hill facility at the time of this remarkable speech synthesis demonstration and was so impressed that he later told Stanley Kubrick to use it in 2001: A Space Odyssey , in the climactic scene where the HAL 9000 computer sings while his cognitive functions are disabled. Mathews directed the Acoustical and Behavioral Research Center at Bell Laboratories from 1962 to 1985, which carried out research in speech communication, visual communication, human memory and learning, programmed instruction, analysis of subjective opinions, physical acoustics, and industrial robotics. From 1974 to 1980 he

783-452: Was fairly representative of first-generation valve -driven computer designs. It used mercury acoustic delay lines as its primary data storage, with a typical capacity of 768 20- bit words, supplemented by a parallel disk-type device with a total 4096-word capacity and an access time of 10 milliseconds. Its memory clock ran at 1000  Hz , and the control unit , synchronized to the clock, took two cycles to execute an instruction (later

812-658: Was the Scientific Advisor to the Institute de Recherche et Coordination Acoustique/Musique ( IRCAM ), Paris, France, and from 1987 was Professor of Music (Research) at Stanford University . He served as the Master of Ceremonies for the concert program of NIME-01, the inaugural conference on New interfaces for musical expression . Mathews was a member of the National Academy of Sciences , the National Academy of Engineering and

841-488: Was then returned to storage. Interest in the machine was revived in the 1990s, as it was realised that many of its developers were ageing and history was being lost forever. A conference about the machine was held in 1996. The machine found a permanent home with Museums Victoria in 2000. It has not been operable since its shutdown, but many of the programs that ran on it have been preserved, and an emulator has been written for it. The curators have decided that, aside from

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