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Convention Paper

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

Authors: Deslauriers, Glen; Leider, Colby

AES Convention 127 · Paper 7923 · October 2009

Abstract

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.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7923
Publication date
October 6, 2009
Session subject
Signal Processing
Affiliation
University of Miami, Coral Gables, FL, USA (See document for exact affiliation information.)
Type
Convention Paper