Systems Seminar
Adaptive Wavetable Oscillators
Bill Sethares
UW ECE Department
Abstract
An adaptive oscillator is a system that can lock on to a
time-varying input signal, synchronizing its output to both
the frequency and phase of the input.
A wavetable oscillator generates a periodic output by indexing into
a lookup table that stores a single period of the waveform.
An adaptive wavetable oscillator combines these two ideas
in a technique which separates the periodic output waveform
from the parameters that control the adaptation
of the frequency and phase of the waveform.
Key issues in the design of adaptive wavetable oscillators are:
the kind of oscillator to use, the class of admissible inputs, the
shape of the wavetable, the control parameters,
and the adaptive algorithm that adjusts the parameters.
This is joint work with Raman Arora.
Time and Place: Wed., Oct. 25, at 3:30 pm in 4610 Engr. Hall.
SYSTEMS SEMINAR WEB PAGE:
http://homepages.cae.wisc.edu/~gubner/seminar/schedule.html