Variable Fractional Delay Filters in Bandlimited Oscillator Algorithms for Music Synthesis
| Title | Variable Fractional Delay Filters in Bandlimited Oscillator Algorithms for Music Synthesis |
| Publication Type | Conference Proceedings |
| Year of Conference | 2010 |
| Authors | Pekonen, J., V. Välimäki, J. Nam, J. S. Abel, and J. O. Smith III |
| Conference Name | the 2010 International Conference on Green Circuits and Systems (ICGCS2010) |
| Date Published | 06/2010 |
| Conference Location | Shanghai, China |
| Keywords | Antialiasing, fractional-delay filter, oscillators, virtual analog |
| Abstract | Trivially sampled geometric waveforms such as the
rectangular pulse wave used in subtractive sound synthesis suffer
from aliasing caused by the discontinuities in the waveform or its
derivative. Several algorithms for the reduction of aliasing dis-
tortion have been suggested, providing either complete removal
or great suppression of aliasing. Some antialiasing oscillators
utilize variable fractional delay filters as an essential part of
the algorithm. In this paper, these oscillators are reviewed with
an emphasis on motivating the use of the fractional delay filters. |
| Full Text |
