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The Ruination of Atlantis is an original ballet in thirteen movements composed for prerecorded media using sampled orchestral and other instruments. The purpose of this essay is to discuss the reasoning behind composing a work for a "virtual" instead of an actual orchestra followed by an analysis of the overall structure of the piece, analyses of the use of leitmotif throughout the work, and an analysis of the pitch, rhythmic, and harmonic material of the piece as a whole and each individual movement. The conclusion of this paper is a description of the concept of staging and performance of The Ruination of Atlantis.

The Rhodes Computer Music Network (RHOCMN) is a network which allows main studio resources to be shared. RHOCMN is growing into a multi-workstation environment and additional devices are being incorporated into the system. A star configuration is used for transmitting MIDI from a MIDI patch bay to the workstations and MIDI devices. This imposes several disadvantages on the use of the studio, such as wiring problems. In a quest to avoid problems related to MIDI in RHOCMN, the MIDINet system was developed. The idea was to acquire a viable solution to MIDI's main problems which does not involve a redefinition of the MIDI specification.

Real-time digital music system design often involves the translation of formal music notation or human gestures by some input device to Musical Instrument Digital Interface (MIDI) commands which are then transmitted to an electronic music synthesizer. This thesis describes the design and implementation of a microprocessor controlled input device that maps analog signals to MIDI commands and transmits them to a digital synthesizer in real time. The controller emulates a traditional acoustic folk instrument known as a hammer dulcimer. The hammer dulcimer is the forerunner of the keyboard family of instruments and incorporates features found in percussive and keyboard instruments. As with any acoustic instrument, its tone is a composite of several partial tones. The controller, in emulation mode, generates the fundamental tone and optionally outputs the partials tones with the just noticeable difference (JND) tolerances described in psychoacoustic research. This feature allows the designer to experiment with the timbre of the fundamental tome. The controller interface succeeds in capturing the gestural movements and translating these events to MIDI commands. It also provides features such as on-demand retuning which allows the musician to play in any tonal center without changing hand positions. Selected MIDI features such as the pitch bend, program change and sustain are implemented by the controller. The prototype instrument yields a tow octave range from an eight by eight inch sensor grid. Additional grids can be added to increase the range of the instrument. / Master of Science

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MID2TEX generiert aus MIDI-Files TeX-Quellcode mit MusicTeX Komponenten -- ueber MusicTeX als Zwischenformat koennen somit -- MIDI-Files in Form von Noten grafisch dargestellt -- werden

This study aimed to develop a real time multiple fundamental frequency detection algorithm for real time pitch to MIDI conversion applications. The algorithm described here uses neural network classifiers to make classifications in order to define a chord pattern (combination of multiple fundamental frequencies). The first classification uses a binary decision tree that determines the root note (first note) in a combination of notes; this is achieved through a neural network binary classifier. For each leaf of the binary tree, each classifier determines the frequency group of the root note (low or high frequency) until only two frequencies are left to choose from. The second classifier determines the amount of polyphony, or number of notes played. This classifier is designed in the same fashion as the first, using a binary tree made up of neural network classifiers. The third classifier classifies the chord pattern that has been played. The chord classifier is chosen based on the root note and amount of polyphony, the first two classifiers constrain the third classifier to chords containing only a specific root not and a set polyphony. This allows for the classifier to be more focused and of a higher accuracy. To further increase accuracy, an error correction scheme was devised based on repetitive coding, a technique that holds out multiple frames and compares them in order to detect and correct errors. Repetitive coding significantly increases the classifiers accuracy; it was found that holding out three frames was suitable for real-time operation in terms of throughput, though holding out more frames further increases accuracy it was not suitable real time operation. The algorithm was tested on a common embedded platform, which through benchmarking showed the algorithm was well suited for real time operation.

La música es una de las actividades de ocio más solicitadas por las personas debido a la gran capacidad de entretenimiento que posee. Es más, hoy en día la Industria del entretenimiento es una de las que más dinero genera a nivel mundial. Es por ello, que muchas empresas intentan ofrecer sistemas innovadores que llamen la atención de las personas. Una de estas actividades es la composición musical. Cualitativamente, el éxito de una composición se puede medir de acuerdo a la sensibilidad que produce, la atracción e interés que puede tener de las personas. En base a esta idea, los modelos matemáticos aleatorios proporcionan herramientas que simulan este comportamiento. Hoy en día, las computadoras se han convertido en el principal dispositivo para realizar actividades musicales debido a la evolución que han tenido en sus aplicaciones de multimedia y su alta capacidad de procesamiento. El presente trabajo explica una forma de realizar una composición musical de manera automática (es decir sin la intervención de las personas) a través de una computadora apoyándose en el uso de las Cadenas de Markov, que son métodos aleatorios utilizados para analizar el comportamiento de varias actividades que ocurren en la vida cotidiana, en este caso en lo relacionado a generación de música. / Tesis

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Title page, table of contents and introduction only. The complete thesis in print form is available from the University of Adelaide Library. / Human congenital disorders impose a large impact not only on the affected individuals and their immediate families but also on communities, often inflicting great healthcare burdens. This thesis concentrates on one congenital disorder, Opitz Syndrome, which is a genetic disorder caused by mutations in MIDI. Opitz Syndrome (OS) patients present an array of clinical features including some of the more commonly found congenital structural anomalies, such as cleft lip and palate and hypospadias. The information gained from an enhanced understanding of the important cellular and molecular processes and pathways involved in Opitz Syndrome will subsequently aid in the elucidation of the basis of the individual clinical features. Only through an increased understanding of the underlying mechanisms of these congenital malformations can advances be made in prevention, diagnosis and ultimately treatment of them. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1141961 / Thesis (Ph.D.) -- University of Adelaide, School of Molecular and Biomedical Science, 2004