If musical information processing is crucial us much at the moment, it’s that it step by step formulated instruments which might be radically modifying the method of contemplating the new music. But Nevertheless, its record is limited. It merges using the progress of numerical technologies: pcs, initially, accompanied by creation through the languages symbolic intended to the programming, then using a complete troop of inventions in numerical technological know-how. Plenty Of early in its heritage, info processing are about to be revealed sufficiently ripe to accommodate fears of all kinds, energy of accountancy to scientific research, though passing effortlessly by what interests us, creative creation.
And it truly is without doubt there that it absolutely is needed to distinguish what arises from data processing alone, and what belongs quite into the broader environment of numerical technologies. The music amply draws from these two fields its new resources. Regardless, since the area from the sound is converted right away into audio numerical, the distinction is crucial. Musical info processing is born from the meeting with the musical worries and also the environment resulting from numerical technologies along with the specificity of the laptop or computer, about the one particular hand, and of the scientific fields which clarify its study topics. in the function the musical composition appears there in superior position, virtually all the other actions of your new music are discovered there. And musical analysis partly addresses the floor cleared by information processing, acoustics, the treatment method within the signal, even cognitive psychology: as a result musical information processing is with the middle of various musical, scientific and technical fields.
But it’s the recourse on the distinct contributions on the info processing which characterizes its action. New conceptual instruments are unceasingly furnished by the synthetic intelligence, which might be concretized by languages along the lines of Lisp or Prolog. there’re place at once for the musicologist aid or abstracting services to your composition. Homework in programs serious time and in the interfaces interactive causes it to be conceivable to conceive new connections somewhere between the instrumentalist along with the digital universe.
Tremendous phases of musical info processing
with all the origin of musical info processing, just one finds two types of things to do, impartial one of another. If these actions prudent right away, it is in an alternative way that the original eyesight which prompted their birth could permit to foresee. These two types of things to do are: the musical composition, and production with the sound. In both cases, the manufacture of the desired outcome is ensured from the computer. These two forms of actions are appreciably contemporary. the quite first significant assessments of musical composition for each personal computer go back to 1956: it actually is on this date that Lejaren Hiller calculated a partition utilizing rules encodes while in the kind of algorithms around the computer system Illiac I of your university of Illinois. it is actually about Illiac Suite for String Quartet, whose three actions are completed this 12 months from the string quartet WQXR. within a well known framework, published in 1959 and which supports the title of “Experimental New Music-Composition with 12 months Digital Laptop Or Computer”, Lejaren Hiller explains in detail the methods that it utilized into the Illiac home computer in purchase to supply the partition of his string quartet.
To track down this period of time, it is actually as into 1956 as John McCarthy forged the expression of synthetic intelligence. A Single calendar year later on, max Mathews, researcher on the laboratories of this Bell Telephone, inside New Jersey, a primary numerical programmer of synthesis belonging to the sound with the desktop computer IBM 704 writes. Well-known right away underneath the title of Audio I, it is actually the initial of the incredible loved ones of acoustic compilers; a psychologist, Newman Guttman, generates initial a 1 15 seconds duration research, during the Silver Scale. it really is as into 1957 because the four movements of this Continuation Illiac for String Quartet of Lejaren Hiller are published; the identical year is born the primitive version in the renowned language of FORTRAN program (FORmula TRANslator). Let us be aware that through the creation from the operate of Hiller by the string quartet WQXR, it is actually max Mathews which arranged a recording, which gave location, thereafter, while employing the publication of this recording in the disc carried out in 1960 from the Bell Laboratories, and entitled New Music from Mathematics: even should the tactics traced by these two inventors are independent, it isn’t generally well-known as they didn’t cross…
From these two more or less modern activities, the advancement will continue on, little by little, during the traced instructions: the composition and production of this audio. We will see affordable the programs of them. But a third way is just not lengthy in showing up: it really is born from identical observation that had constructed Hiller: the computer system is over all, at that time, a formidable calculating device. Furthermore, the English term of picked laptop computer indicated, before the appearance of these machines, the workforce charged to operate calculations. But at the same time, which has a bit of worry, 1 spoke easily at time of digital brains. An artist could not method the computer system not with no selected emotion, which explains without having any question the attraction in some cases terrifying that information processing will exert to the artists of your subsequent a prolonged time. But they may be two researchers that are on the origin of such experiments: Hiller practiced chemistry, when Mathews was an definitely famed researcher. it can be without doubt what explains wonderful methodologies which they reflect in position, just about every a person on their facet, and with entirely independent aims.
along with the Bell laboratories, max Mathews, on his facet, prepared in 1957 a initial numerical programmed of synthesis with the sound to the desktop computer IBM 704, equipped with 4096 phrases of memory. Best-known right now underneath the name of Audio I, its the initial of the wonderful household. The program Music III (1960) introduced the idea of instrument modular. The design imagined by max Mathews is inspired greater than 1 gear of laboratory or an digital studio of audio that by an acoustic stringed-instrument trade. The system provides a array of impartial modules (Unit Generators), in cost each and every one among an elementary purpose: oscillator with sort of programmable wave, adder of signals, multiplier, generator of envelopes and random indicators, and a high-quality quantity of others… The musician builds a “instrument” by connecting a number of modules somewhere between them. The indicators manufactured by the oscillators or the generators are led in the direction of other modules there being modified or mixed. Quite A Few instruments are generally joined with each other within a “orchestra”, each instrument getting its very own identity. Contrary to what occurs inside the material universe, it there not of limit to your quantity of modules usable at the similar time, except maybe the memory of your computer system. The end result within the placement of your instrument is definitely the progressive calculation in the audio inside the kind of the sequence of amounts which, set conclude to conclusion, symbolize a complicated audio wave. These numbers are labeled as “samples”. Presently, the amount of samples representing just one 2nd of its was established to 44 a hundred per channel to the apps typical public, and to 48 000 for the expert field.
as a outcome of relative slowness with the devices and design bodyweight to be carried out, time place to generate the sound wave is very greater compared to duration from the seems; the operation of these packages is generally recognized as “in differed time”. while using origin, the sound waves calculated in numerical kind have been saved on the numerical tape progressively proceeding conclude of an arithmetic unit of samples. This mode of creation of your sound is referred to as “immediate synthesis”. So results in for itself a “file of audio”; after accomplished, the musician calls upon a second application, charged looking through the file of audio in real time and with sending the samples toward a digital-to-analog converter, which is certainly connected to an amplifier and loudspeakers.
To activate the orchestra, the musician will have to write a “partition”, where most of the parameters claimed from the modules from the instrument are specified. This partition is offered inside the kind of the list of figures or telegraphy codes, each “be aware” or simply a every function getting the issue of a distinct listing. These lists are ordered in time.
But to specify just about every parameter can be described as problematic chore, a high-quality deal more certainly as being the musicians are often not qualified to present values measured to sound dimensions which they handle. To fight towards this obstacle, of the languages of assistance for the writing of partitions were conceived; most recognized may be the Score plan of Leland Smith (1972). Score will not be an automatic system of composition: it makes it doable to specify the parameters utilizing terms resulting through the musical practice (heights, nuances, durations), immediately to calculate alterations of tempo or nuances, as nicely as to dietary supplement sections with notes corresponding to a trajectory presented through the style-setter.
The design instrument-partition was firmly established along with the arrival of Music IV (1962). This method have been born from loads of alternate options, of which some exist certainly nonetheless nowadays. Amongst these misadventures, let us quote Audio 4BF (1966-67), there is today a version for Macintosh (Audio 4C, 1989), and primarily New Music 360 of Barry Vercoe (1968); this descendant of New Music IV has as a attribute to become introduced inside sort of the a fact programming language, which unquestionably explains why it grew to become immediately with C-Songs the acoustic compiler greater implemented. it absolutely was in the beginning adapted to minicomputer PDP-eleven from DIGITAL in 1973, then, entirely rewritten in language C in 1985, it took the name of C-Audio, and was quickly adapted to all forms of data-processing platforms, together with the micro-personal computers like Atari, Macintosh and IBM. In 1969 Audio V appears, a plan that is conceived to facilitate the musical programming of this instruments additionally, the partitions; nowadays, Audio V is still largely employed, generally inside the type on the adaptation that in designed Richard Moore, C-Music (1980).
The computer system was also an unquestionable successes within a strongly speculative discipline, the musicologists evaluation. aided by the eyes on the public interested with the start for the Sixties, information processing, however quite mysterious and inaccessible, confirmed the possibility for odd musical effort; in composition, in musicology and at prolonged last, limited with the laboratories Bell, production of audio. a brilliant musical upheaval of this 10 years was to arrive from the world of electronics, aided by the appearance into 1964 in the synthesizers modular, often known as “analogical” mainly because they do not include numerical electronics. Conceived independently by Paolo Ketoff (Rome), Robert Moog and Donald Buchla (the Usa), the synthesizers deliver the response to your technological aspirations of many musicians, mainly following the fashionable accomplishment on the disc Switched one particular Bach of Walter Carlos who honestly designed know these instruments near a great audience. Through this time, the method of Mathews knows adaptations on other web pages, such as the universities of Ny, Princeton or Stanford.
One Additional application belonging to the laptop or computer seems when utilizing the piloting of analogical instruments. The machine generates indicators with slow variation which modify the adjustments of gadgets of studio: frequency of oscillators, profit of amplifiers, reduce-off frequencies of filters. The first instance of this method which 1 names “hybrid synthesis” was set up in 1970 in Elektron Musik Studio of Stockholm, foundation impartial since 1969, financed from the Royal Academy of Audio, and put below the course of Knut Wiggen. A home computer PDP 15/forty managed 20-4 generators of frequency there, a generator of white vibration, two 3rd filters of octave, modulators: from ring, of amplitude and reverberations. The originality of this procedure of Stockholm lay in an quite ergonomic operator console, with which the choice-setter could specify the parameters of synthesis by sweeping a panel of figures using a metal brochette. An Alternative studio is being quoted: that of Peter Zinovieff in London (1969), put underneath the manage of the minicomputer DIGITAL PDP 8 for which Peter Grogono wrote the language of Musys piloting.
An Extra remarkable realization is the method Groove (Produced Realtime Operations 1 Machines Voltage-controlled, Ca 1969) conceived on the Bell laboratories by max Mathews and Richard Moore. Groove is definitely an instrument intended for the handle of parameters of interpretation of the gadget of synthesis. within this course, it locations the musician added shut with the placement of the leader that to a choice-setter or an instrumentalist, however an individual can look into which the digital form-setter of audio will have to generally place himself in position of chief, by immediately interpreting the audio and that is produced up.
it’s the center of your Seventies which marks the transition towards an inexorable widening from now on from your living of musical data processing, using the overall look for the microprocessor. A info-processing stringed-instrument trade will turned out to be little by little practical together with the pattern of complete computer systems on an integrated circuit: microprocessors. It may even be essential the interface while using user improves, and that the punch cards by a greater interactive mode of inputs are replaced: it will likely be the keyboard together with the cathode ray tube which will have it.
The principle within the hybrid synthesis ongoing being applied through the Seventies, previous to remaining supplanted definitively by the numerical synthesizers with the dawn within the Eighties. The American service Intel markets because 1971 the very first microprocessor, the circuit 4004, which allow the pattern of real miniature pcs, the microcomputers: Intellec 8 (conceived beginning from microprocessor 8008 of 1972), Apple I, Altair (1975), gathered soon underneath the name of micro-computers.
The experiment musical in the Art Group and Data processing of Vincennes (GAIV) illustrate this time of transition effectively. This group, founded towards the college of Paris 8 by Patrick Greussay as effectively as a staff of artists and architects, identified with the publication of the bulletin diffusing the researching projects in many new art and info processing, entrusted on the type-setter Giuseppe Englert the musical coordination of her things to do. It is Intellec eight, microcomputer with words of 8 bits, ordered by a paper tape and a keyboard, which was utilised together with the compositionally actions and as homework on musical formalization; English synthesizers EMS-VCS3 were controlled from the microcomputer, via digital-to-analog converters charged to supply ability of purchase in trade on the binary information calculated by interactive software programs.
the next result within the arrival within the microcomputer was the pattern of the “mixed synthesis”, synthesizers numerical, real pcs adapted towards the calculation with the audio wave in real times, placed below the manage of a laptop. From second half with the Seventies seem many achievements of this sort; we’ll retain give effective results of James Beauchamp, Jean-François Allouis, William Buxton, inter alia, like all those of Peter Samson (synthesizer of Methods Principle, conceived with the explore center — CCRMA — college of Stanford), Synclavier de New England DIGITAL Corporation, conceived by Syd Alonso and Cameron Jones beneath the impulse of your style-setter Jon Appleton, structure, under the impulse of Luciano Berio, of a bench of oscillators in Naples by Giuseppe di Giugno, who continued his do the job in Ircam (series 4A, 4B, 4C and 4X) beneath the direction of Pierre Boulez; far more not long ago, Fly 30 of your Center of recherché musical of Rome. allow us to be aware that using the 4X of Ircam (1980), the expression of synthesizer disappears, changed by that of numerical processor of signal, which without doubt moves the accent in the normal answers for the machine.
The community of the electronic instrument would not take a lengthy time to adapt to these new developments. The first phase consisted in introducing microprocessors inside analogical synthesizers (Prophet synthesizers of the company Sequential Circuits), charged to manage the modules ordered in tension; it can be nevertheless for the “hybrid synthesis”. the next phase follows shortly: it is composed in developing real solely numerical musical instruments. It is the discovered arrival of Synclavier II, then of Fairlight.
The industrial field is in these days in the beginning made up by the market belonging to the synthesizers plus the processors within the sound, and by the software which causes it to be probable to exploit them. Today, all the synthesizers are numerical, and automatically meet the Midi common. The field with the synthesizers is double: within the one particular hand apparatuses, typically offered using a keyboard, which propose a pick of preprogrammed sounds which a person can fluctuate specified parameters by an elementary progression of programming; what’s more, the machines which are intended to reproduce sounds beforehand recorded and memorized, or stored on mass memory: samplers, or “samplers”.
It must be noted that all these technologies turn into obtainable on the personal musician, inside the framework of precisely what is identified as regularly the “own studio” (place studio).
But these devices, in addition to a fortiori the particular studio don’t perform not having adapted software system: the sequencers control the execution of a piece straight beginning from a laptop, the editors of sound are intended for the treatment method, the assembly additionally, the mixing of sound sequences. Courses allow it to be attainable to publish a partition, which from now on is regularly employed through the musical edition. Lastly, the machines may also be placed beneath the handle of supplementary programmes to your composition.
the best original character on the up to date information-processing stringed-instrument trade would be the “workstation”. To conceive a workstation is composed in gathering products of all sorts of nature, meant to the examination or the synthesis for the audio, the manage of this audio or the composition. These systems are integrated inside information-processing a “natural environment” organized about a computer system and of its peripherals, intended for the treatment method from the sound on line. it will be the situation within the plug-in charts which, coupled into a software package, ensure it is plausible to browse “files of audio” stored on the disc, in trade of an order, coming as an illustration from a Midi source. This product, if new that it did not uncover yet still a title genuine, is generally indicated like “hard” or “immediate-to-disk” disk.
The musical representation
because the laptop, as opposed to the digital new music of studio, statements a specification on the information, and thereby a creating, the issue for the musical representation is really a persistent issue for the field. we’ll see two answers. the 1st illustrates a stage a priori compositionnelle: that of Xenakis. the 2nd, additional basic, could be the Midi normal.
Iannis Xenakis innovates when by using the structure for the UPIC (Unit Polyagogique Informatique of CEMAMu). Conceived within the center of this Seventies, this model rises naturally from your solution with the synthesis of the audio by this choice-setter: inside the team which it had joined with every other, baptized at first Emamu (Group of Mathematics and Musical Automatic, 1966), and aided by the financing in the Basis Gulbenkian, Xenakis had constructed develop a digital-to-analog converter of great top notch. The UPIC represents a complete natural environment of composition with, in consequence, the audio synthesis belonging to the web page of constructed up music. Grown To Be in 1971 CEMAMu (Center of Mathematics and Musical Automated) since from the creation of a area intended to shelter its exploration, the crew joined collectively all over Xenakis conceives a strategy rendering it conceivable on the variety-setter to draw on the broad table of architect of your “arcs time-top”, by choosing for every arc a temporal trajectory, a form of wave, a nuance. The music therefore is at first represented in graphic form. The products of the rather first UPIC are published for any minicomputer Solar 16/65, connected to two bodies of magnetic tapes to shop the products and the samples, a digital-to-analog converter, a cathode ray tube which can make it plausible to article the types of waves, but in addition to draw these waves using a graphic pencil. To listen to the web page which it has just drawn, the type-setter must wait till the personal computer finished to calculate every one of the samples; the generation of the sound is ensured by a digital-to-analog converter of higher superior. Much More not too prolonged ago, the UPIC was redrawn for microcomputer, and functions not having delay.
To signify the sound inside form of a modifiable image, it is the target on the Phonograms system, built with the college Paris eight per Vincent Lesbros. using the method of the sonograms, the application posts the spectral examination like a drawing, which can be modified; the new representation can then be synthesized, either by Midi, or inside the form of the file of sound, and even transformed into Midi file.
The reproach frequently in the present day is heard which the era of younger musicians who tactic systems throughout the natural environment constructed around the Midi regular will not be a satisfactory aware of not passed of musical data processing and its difficulties. But is typically to neglect that, within a path, the birth in the Midi normal was completed without the demand of genuine filiation together with the preceding levels belonging to the subject which an individual will identify musical info processing. The phenomenon which represents Midi is absolutely not in the least a misadventure of this area.
The Midi normal was created in 1983 to allow the piloting of a few synthesizers commencing from one particular only keyboard; the messages are transmitted in numerical format, according to a perfectly defined protocol. together with the origin, Midi is as a result very well dependant on instrumental gesturer management: it is a procedure to signify not the sound, nevertheless the gesture belonging to the musician who plays of a Midi instrument. In 1983 leaves the 1st synthesizer to have an interface Midi, Prophet 600 of Sequential Circuits. What had not been defined, on the other hand, it is the success which this typical was heading swiftly to achieve, which presently is put to use to inter-link every certainly a single of the machines of the studio of digital new music, and in some cases the sets of lights of the scene.
Musical investigate
The do the job undertaken simply because 1956 by Lejaren Hiller to the composition of Illiac Suite for String Quartet marks at the exact same time the correct birth of musical info processing additionally, the anchoring of this field with the research, utilized in this case for the automatic composition. The computer appeared then for a device rendering it doable to deal with the complicated continuations of functions which characterize the composition of ambitious musical will work. in this way was likely to get reinforced mainly because 1958 through the French choice-setter Pierre Barbaud, who melts in Paris the Algorithmic Group in connection while using organization Bull-General Electric and begins his study of automatic composition; as with the following yr, the primary algorithmic do the trick of Barbaud was constructed up:
Unforeseeable improvements (Algorithm one), together with the collaboration of Pierre Blanchard. The application Musicomp de Lejaren Hiller and Robert Baker, of identical time, conceived to the Illiac laptop computer after the composition of the Illiac Continuation, making university of Illinois amongst the centers of musical data processing at that time. And when in 1962, Iannis Xenakis creates ST/10, 080262, do the trick composed many thanks to your stochastic system ST established for the reason that 1958 on the home computer IBM 7090, the composition implementing the home pc enters its golden age. In the Netherlands, Gottfried Michael Koenig writes in 1964 the program of composition Job I (1964), followed soon of Undertaking II (1970). The composition pc-assisted rests on mathematics additionally, the stochastic a person, drawing mostly through the sources within the processes of Markov (Hiller, Barbaud, Xenakis, Chadabe, Manoury).
together with the arrival on the micro-personal computers a entire new tendency develops: aid with the composition, then computer-aided style and design of composition (CAD). The method demiurge, in a position to create a complete composition the model of an surroundings of information-processing resources charged succeeds to contend with exact musical concerns. allow us to quote between the principal ones: HMSL (Hierarchical New Music Language Specification, 1985) with Mills Higher Education in California, Forms, built by Xavier Rodet, Draft and Patchwork, developed in Ircam under the impulse of Jean-baptiste Barrier, Experiment in Musical Intelligence of David Cope, on the university of Santa Cruz in California. These applications are open: they dialogue aided by the type-setter in an interactive way, and therefore are linked to your universe within the Midi units. Other Than for M and Jam Factory of Joel Chadabe and David Zicarelli, there’re structured through the utilization of languages nonnumerical, resulting in the subject of this artificial intelligence, for example Forth, and mainly Lisp, which explains why they rest not on mathematics, as it absolutely was the situation for the 1st generation of composition laptop-assisted, but within the formal languages and the generative grammars.
Authentic time: personal pc and instrumental universe
The Eighties see establishing the utilization of the laptop in condition in concert; thanks with the arrival on the numerical synthesizers in authentic time, or, extra generally, numerical processors of sound, and languages of manage actual time, the circumstances are ripe to revisit this old surface area on the new music of your XXe century: digital new music on line (stay digital songs). In the vast vast majority of the cases, it can be in the beginning a query of imagining a signifies of connecting the home computer and its computing electrical power to gadgets of synthesis or therapy of audio, with, if, attainable, the interaction of musicians. Répons (1981), of Pierre Swell, by the integration of your methods of remedy the composing alone, confirmed in what the laptop computer grew to become an instrument, integrated properly in to the orchestra. Adhering To this perform perform appears around the follow-up, by the laptop or computer, from the play within the instrumentalist, operation recognised beneath the name of “abide by-up of partition”. allow us to quote the contributions of Roger Dannenberg with the automated accompaniment as well as languages presenting the circumstances of your communication laptop computer-instrument, individuals of max Mathews, initially with all the Groove program, then alot more recently with its deliver the results on “Radio operator Drum” along with the simulation of the rod of the chief orchestrates itself, Miller Puckette while using Max. plan.
this could be the reason one particular was also fascinated to offer to instruments of orchestra this ability, by giving them with sensors, permitting the personal pc to keep to the execution (flute, vibraphone, and so on…). All musical industry is involved with this particular tendency, even though the method for being put to use is absolutely not resolved nonetheless: it shall be electromechanical (material sensors put at strategic locations of this instrument, conducting membranes, and so on…), or will it be appropriate to get recourse into the examination for stolen of this seems themselves to get a hold of out of it the height, the spectral construction plus the mode of play?
The neighborhood organizes by itself
The ripening of musical information processing was accompanied by an assumption of accountability through the group through the musicians and scientists by by themselves. Little By Little, the conscience of membership of the field is done day. The international congresses appear, followed later on neighborhood conferences. The communications which are marked one can find published in collections around for each of the neighborhood. These meetings also give site into the presentation in concerts, which tends added strongly to weld around them the conscience of the new area, when using the scientific and artistic components. It is the beginning of your “Global Personal Pc New Music Conferences” (ICMC). In 1978 is born an organization intended to facilitate the communication and to aid the habits belonging to the congresses, the “Desktop Computer Audio Association”, which gets in 1991 “International Desktop Computer Audio Association” (ICMA). The organizers seek to hold the congress 1 yr in North The Us, together with the adhering to 12 months on a further continent. These congresses see the ICMA taking a position increasing with the aid brought to the localized organizers, like in the diffusion of the publications resulting from these meetings, going till putting in the orders of performs which may be completed in ICMC (ICMA Commission Awards, 1991).
One Other motor vehicle which welds the conscience of membership of the usual subject certainly is the Computer Audio Journal. Appeared in California in 1977, it happens to be used once more by MIT Press starting up from volume four (1980). The newspaper is crucial much like the reference as regards scientific publications belonging to the discipline. Association ICMA publishes a bulletin, Array, which became a body extremely appreciated of detail and dialogue on the current matters of musical information processing. The review Interface Dutchwoman, which turns into for the reason that 1994 Newspaper of New New Music Investigate, on a regular basis publishes posts on musical information processing. Canada, Musicworks, guided by Gayle Younger, guarantees tips on the broad variety of worries of the new musics. In France, publications of Ircam, InHarmonique, then the publications of Ircam open their columns aided by the aesthetic, theoretical and crucial considerations which accompany sudden visual appeal by new technologies in arts.
In 1991 the Leonardo newspaper, published through the worldwide association for arts, science and engineering, founded in 1968 by Frank Malina, lance, beneath the course of Roger Malina, Leonardo Music Journal, who deliver a entire eyesight of this musical practice related to new technologies, thanks also towards the publication, with each and every amount, of the compact disk. A Lot More theoretical, the evaluate [http://www.linereview.com] Languages of Structure, underneath the route of Raymond Lauzzana, is interested by formalization in the creative procedures, and grants a broad area to musical data processing. With these standard supports of advice the direct communication amongst musicians and scientists through the usually means belonging to the information-processing networks is extra, allowing the instantaneous electronic mail. Lastly, the need to increase the velocity of communication gave birth on the electronic newspapers, diffused from the networks including Online World; introduced in the construction of manufacture, impression and routing, they make it easy for identical variety of access to critical information as being the data banks which, in addition they, multiply in musical data processing.