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Demystifying Music and Its Performance--Elaine Chew
Pages 61-72

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From page 61...
... The dynamics of musical ensemble offer models of human collaboration. The demands of musical interaction challenge existing computing paradigms and inspire new ones.
From page 62...
... key-finding algorithm based on the spiral array determines the key by searching for the key representation nearest the center of effect of the query stream. The interior-point approach of the CEG algorithm makes it possible to recognize the key quickly and provides a framework for designing further algorithms for automated music analysis.
From page 63...
... , many of the algorithms described above have been incorporated into the Music on the Spiral Array Real-Time (MuSA.RT) system -- an interactive tonal analysis and visualization software (Chew and François, 2003)
From page 64...
... When a note is sounded, silver spheres appear on the note name, a short-term center of effect tracks the local context, and the triad closest to it lights up as a pink/blue triangle. A long-term center of effect tracks the larger scale context, and a sphere appears on the closest key, the size of which is inversely proportional to the center of effect-key distance.
From page 65...
... , a virtual radius mapping strategy ensures smooth tempo transitions (Figure 5) , a hallmark of expert performance, even if the user's driving behavior is erratic (Liu et al., 2006)
From page 66...
... FIGURE 5 Virtual radius mapping ensures smooth tempo transitions despite erratic driving. Source: Adapted from Liu et al., 2006.
From page 67...
... In a series of distributed immersive performance (DIP) experiments, we recorded the Tosheff Piano Duo performing Poulenc's Piano Sonata for Four Hands with auditory delays ranging from 0 milliseconds (ms)
From page 68...
... Using more recent tools and techniques for music alignment and performance analysis, we can now conduct further experiments with the DIP files to create detailed maps of ensemble dynamics (Wolf and Chew, 2010)
From page 69...
... For the 2010 topic in Musical Prosody and Interpretation, highlights of student projects include Brian Highfill's time warping of a MIDI (musical instrument digital interface) file of Wouldn't It Be Nice to align with the Beach Boys' recording of the same piece; Chandrasekhar Rajagopal's comparison of guitar and piano performances of Granados' Spanish Dance No.
From page 70...
... 2005. Regards on two regards by Messiaen: post-tonal music segmentation using pitch context distances in the spiral array.
From page 71...
... 2005c. A Second Report on the User Experiments in the Distributed Immersive Performance Project.


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