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Dive into the research topics where John MacCallum is active.

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Featured researches published by John MacCallum.


computer music modeling and retrieval | 2008

Real-Time Analysis of Sensory Dissonance

John MacCallum; Aaron Einbond

We describe a tool for real-time musical analysis based on a measure of roughness, the principal element of sensory dissonance. While most historical musical analysis is based on the notated score, our tool permits analysis of a recorded or live audio signal in its full complexity. We proceed from the work of Richard Parncutt and Ernst Terhardt, extending their algorithms for the psychoacoustic analysis of harmony to be used for the live analysis of spectral data. This allows for the study of a wider variety of timbrally-rich acoustic or electronic sounds which was not possible with previous algorithms. Further, the direct treatment of audio signal facilitates a wide range of analytical applications, from the comparison of multiple recordings of the same musical work to the real-time analysis of a live performance. Our algorithm is programmed in C as an external object for the program Max/MSP. Taking musical examples by Arnold Schoenberg, Gerard Grisey and Iannis Xenakis, our algorithm yields varying roughness estimates depending on instrumental orchestration or electronic texture, confirming our intuitive understanding that timbre affects sensory dissonance. This is one of the many possibilities this tool presents for analysis and composition of music that is timbrally-dynamic and microtonally-complex.


Pflügers Archiv: European Journal of Physiology | 1904

Ueber die Wirkung der Abführmittel und die Hemmung ihrer Wirkung durch Calciumsalze

John MacCallum

Die folgende Arbeit enthi~lt die Resultate einer li~ngeren Reihe yon Versuchen fiber die Wirkung der Abfiihrmittel. Einzelne der Versuche babe ich bereits friiher in amerikanischen Zeitschriften ver5ffentlicht. Die Zusammenfassung an dieser Stelle zeigt eine vollstiindige Uebereinstimmung in der Art der Wirkung bei drei Gruppen yon Abft~hrmitteln, n~imlich den als Abfi~hrmittel benutzten Salzen, den pfianzlichen Abffihrmitteln (Cascara sagrada, Rhabarber) und den abfiihrend wirkenden Alkaloiden (Pilocarpin). Als Versuchsthiere dienten Kaninchen und Hunde, vorwiegend jedoch Kaninchen. W~ihrend der Versuche waren die Kaninchen mit Morphin und die Hunde mit Morphin und Aether narkotisirt. Als Kriterium fiir die Wirkung der Abftihrmittel wurde nicht nur die Kothentleerung in Betracht gezogen, sondern es wurde auch der Darm blossgelegt und direct beobachtet. Far den letzteren Zweck wurden die Thiere laparotomirt, und die Eingeweide wurden warm und feucht gehalten und das ganze Thier gegen Wiirmeverlust so weit als mSglich geschtitzt. Am Darm wurden die peristaltischen Bewegungen und die Secretionsvorgange besonders beriicksichtigt. Die Abfi~hrmittel wurden nicht nur per os gegeben, sondern in der Mehrzahi tier Falle unter die Haut direct in eine Vene gespritzt. In anderen Versuchen wurden sie auf die aussere peritoneale Oberfli~che des Darms gebracht. Endlich wurden auch Versuche mit Stricken des Darmes angestellt, welche aus dem Thier geschnitten waren.


international workshop on functional art, music, modelling and design | 2016

o.OM: structured-functional communication between computer music systems using OSC and Odot

Jean Bresson; John MacCallum; Adrian Freed

O.—odot—is a portable media programming framework based on the OSC data encoding. It embeds a small expression language which allows writing and executing programs in OSC structures. The integration of programming and declarative functional descriptions within data transfer protocols enables structured and expressive communication in media systems: program snippets can be distributed in OSC messages, which evaluate to further OSC messages in the different communicating software. We present experiments using this framework in the OpenMusic computer-aided composition environment, and illustrate via case studies some advantages of such integrated system.


EVA '15 Proceedings of the Conference on Electronic Visualisation and the Arts | 2015

The impossibility of control: real-time negotiations with the heart

John MacCallum; Teoma J. Naccarato

We present a practice-based research project, which examines temporal relationships between physiological processes with human movement and mediated environments. Ongoing research will provide a foundation for the creation of performances in which real-time heart rate data from contemporary dancers is used to generate click tracks for live musicians. The complex constructions of time in this project necessitate novel visualization strategies throughout the research, development, creation, and production process, including: time domain display of data with rich and facile interaction using bokeh; visualization of biometric data as a form of biofeedback; and unique representations of time in music notation.


international computer music conference | 2011

Dynamic, Instance-based, object-oriented programming in Max/MSP using open sound control message delegation

Adrian Freed; John MacCallum; Andrew Schmeder


new interfaces for musical expression | 2011

Composability for Musical Gesture Signal Processing using new OSC-based Object and Functional Programming Extensions to Max/MSP

Adrian Freed; John MacCallum; Andrew Schmeder


international computer music conference | 2010

Timewarp: A Graphical Tool For The Control Of Polyphonic Smoothly Varying Tempos

John MacCallum; Andrew Schmeder


international computer music conference | 2015

Dynamic Message-Oriented Middleware with Open Sound Control and Odot

John MacCallum; Rama Gottfried; Ilya Rostovtsev; Jean Bresson; Adrian Freed


new interfaces for musical expression | 2013

Old is the New "New": a Fingerboard Case Study in Recrudescence as a NIME Development Strategy.

Adrian Freed; John MacCallum; Sam Mansfield


Journal of Dance & Somatic Practices | 2016

From representation to relationality: Bodies, biosensors and mediated environments

Teoma J. Naccarato; John MacCallum

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Adrian Freed

University of California

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David Wessel

University of California

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Aaron Einbond

University of California

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David Bowen

University of Minnesota

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