Sound Synthesis by Physical Modeling using the Functional Transformation Method: Efficient Implementation with Polyphase Filterbanks

Conference contribution


Publication Details

Author(s): Petrausch S, Rabenstein R
Publication year: 2003
Pages range: 231-236


Abstract


The Functional Transformation Method (FTM) is a recently introduced method for sound synthesis by physical modeling. Based on integral transformations, it provides a parallel system description for any linear physical model, usually described by a set of partial differential equations. Such parallel descriptions can be directly implemented by a set of recursive systems in full rate. In this paper we present a new and very efficient method for this implementation which benefits from the spectral decomposition of the system. All recursive systems are working at a subsampled rate and are summed up by the application of a polyphase filterbank. Performance measurements on a real time implementation show, that a flexible and efficient realization is achieved. Compared to the direct implementation it is over nine times faster at the cost of nine milliseconds of delay and even faster with more delay.



FAU Authors / FAU Editors

Rabenstein, Rudolf Prof. Dr.
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


How to cite

APA:
Petrausch, S., & Rabenstein, R. (2003). Sound Synthesis by Physical Modeling using the Functional Transformation Method: Efficient Implementation with Polyphase Filterbanks. (pp. 231-236). London, GB.

MLA:
Petrausch, Stefan, and Rudolf Rabenstein. "Sound Synthesis by Physical Modeling using the Functional Transformation Method: Efficient Implementation with Polyphase Filterbanks." Proceedings of the Int. Conf. on Digital Audio Effects, DAFx 03, London 2003. 231-236.

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Last updated on 2018-10-08 at 09:23

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