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Fixed frame rate ABS/OLA sinusoidal modeling applied to polyphonic music synthesis

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3 Author(s)
George, B. ; DSP Res. & Dev. Center, Texas Instrum. Inc., Dallas, TX, USA ; Yinong Ding ; Yim, S.

This paper describes algorithms developed to implement the Analysis-by-Synthesis/Overlap-Add (ABS/OLA) sinusoidal modeling system in real-time polyphonic music synthesizer. As originally proposed, the ABS/OLA system is limited to unidirectional time-scaling, and relies on variable frame length to accomplish timescale modification. For MIDI-driven music synthesis applications, unidirectional time scaling makes effective looping to produce sustained notes difficult, and variable frame length makes real-time polyphonic synthesis problematic. This paper presents a reformulation of the ABS/OLA system to deal with these issues, which is termed Fixed-Rate ABS/OLA (ABS/OLA-FR)

Published in:

Multimedia Signal Processing, 1997., IEEE First Workshop on

Date of Conference:

23-25 Jun 1997