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Abstract Details
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Activity Number:
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222
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Type:
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Topic Contributed
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Date/Time:
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Monday, July 30, 2012 : 2:00 PM to 3:50 PM
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Sponsor:
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IMS
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| Abstract - #305852 |
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Title:
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Statistics in the Arts
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Author(s):
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Christopher Raphael*+
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Companies:
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Indiana University
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Address:
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901 E. Tenth Street, Bloomington, IN, 47408, United States
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Keywords:
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music ;
accompaniment ;
graphical model ;
audio processing
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Abstract:
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This talk presents a musical accompaniment system, known interchangeably as "Music Plus One" and the "Informatics Philharmonic," which plays a flexible accompaniment that follows a live soloist in a concerto setting. The program "listens" to the live player using an HMM, making real-time decisions based on the filtered distribution of the player's score position. A separate "thread" of the program predicts the times of future musical events using a Gaussian graphical model that both incorporates basic musical notions of timing and can adapt in a manner analogous to "rehearsing." In live performance a prerecorded orchestra-only recording is resynthesized using phase-vocoding to accommodate the predictions of the timing model. The talk will contain a live demonstration of the system as well as discussion of future directions.
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