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A Bandlimited Oscillator by Frequency-Domain Synthesis for Virtual Analog Applications

Problems posed by the bandlimited synthesis of audio signals have long been addressed by the music and audio engineering communities. However, few of the proposed solutions have the flexibility necessary to accurately model and produce the variety of waveform functions present in an analog oscillator. Preferably, an additive technique would be employed as the ideal method of alias-free synthesis. Inverse Fourier Transform synthesis is one method that is often discussed but less-frequently utilized. Here, we propose modifications to the method and implementation of Inverse Fourier Transform synthesis as a viable basis for the creation of a software oscillator for a Virtual Analog instrument. Design results show the quality to outperform a variety of currently implemented methods.

Authors: Deslauriers, Glen; Leider, Colby
Affiliation: University of Miami, Coral Gables, FL, USA
AES Convention:127 (October 2009) Paper Number:7923 Import into BibTeX
Subject:Signal Processing

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