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Audio Effects for Real-Time Performance Using Beat Tracking

We present a new class of digital audio effects which can automatically relate parameter values to the tempo of a musical input in real-time. Using a beat tracking system as the front end, we demonstrate a tempo-dependent delay effect and a set of beat-synchronous low frequency oscillator (LFO) effects including auto-wah, tremolo and vibrato. The effects show better performance than might be expected as they are blind to certain beat tracker errors. All effects are implemented as VST plug-ins which operate in real-time, enabling their use both in live musical performance and the off-line modification of studio recordings.

Authors: Stark, A. M.; Plumbley, M. D.; Davies, M. E. P.
Affiliation: Queen Mary, University of London
AES Convention:122 (May 2007) Paper Number:7156 Import into BibTeX
Subject:Analysis and Synthesis of Sound

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