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Abstract
Wavefolders are a particular class of nonlinear waveshaping circuits, and a staple of the “West Coast” tradition of analog sound synthesis. In this paper, we present analyses of two popular wavefolding circuits—the Lockhart and Serge wavefolders—and show that they achieve a very similar audio effect. We digitally model the input–output relationship of both circuits using the Lambert-W function, and examine their time- and frequency-domain behavior. To ameliorate the issue of aliasing distortion introduced by the nonlinear nature of wavefolding, we propose the use of the first-order antiderivative method. This method allows us to implement the proposed digital models in real-time without having to resort to high oversampling factors. The practical synthesis usage of both circuits is discussed by considering the case of multiple wavefolder stages arranged in series.
Original language | English |
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Number of pages | 23 |
Journal | Applied Sciences |
Volume | 7 |
Issue number | 12 |
DOIs | |
Publication status | Published - 20 Dec 2017 |
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Dive into the research topics of 'Virtual Analog Model of the Lockhart and Serge Wave Folders'. Together they form a unique fingerprint.Projects
- 1 Finished
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NESS - Listening to the future: Next-generation Sound Synthesis through Simulation
1/01/12 → 31/12/16
Project: Research
Research output
- 1 Conference contribution
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Virtual Analog Model of the Lockhart Wave Folder
Esqueda, F., Poyntinen, H., Parker, J. & Bilbao, S., 7 Jul 2017, Proceedings of the 14th Sound and Music Computing Conference. Aalto University, 5 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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