Feedback Amplitude Modulation Synthesis

A recently rediscovered sound synthesis method, which is based on feedback amplitude modulation (FBAM), is investigated. The FBAM system is interpreted as a periodically linear time-varying digital filter, and its stability, aliasing, and scaling properties are considered. Several novel variations o...

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Bibliographic Details
Published in:EURASIP journal on advances in signal processing 2011-01, Vol.2011 (1), Article 434378
Main Authors: Kleimola, Jari, Lazzarini, Victor, Välimäki, Vesa, Timoney, Joseph
Format: Article
Language:English
Subjects:
Digital music
Engineering
Musical Applications of Real-Time Signal Processing
Quantum Information Technology
Research Article
Signal processing
Signal,Image and Speech Processing
Spintronics
Studies
Theory
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Summary:A recently rediscovered sound synthesis method, which is based on feedback amplitude modulation (FBAM), is investigated. The FBAM system is interpreted as a periodically linear time-varying digital filter, and its stability, aliasing, and scaling properties are considered. Several novel variations of the basic system are derived and analyzed. Separation of the input and the modulation signals in FBAM structures is proposed which helps to create modular sound synthesis and digital audio effects applications. The FBAM is shown to be a powerful and versatile sound synthesis principle, which has similarities to the established distortion synthesis methods, but which is also essentially different from them.
ISSN:1687-6180
1687-6172
1687-6180
DOI:10.1155/2011/434378