Opens in a new tab

AES E-Library

← Back to search

Convention Paper

The Relationship between the Bandlimited Step Method (BLEP), Gibbs Phenomenon, and Lanczos Sigma Correction

Authors: Singh, Akhil; Pirkle, Will

AES Convention 141 · Paper 9670 · September 2016

Abstract

In virtual analog synthesis of traditional waveforms, several approaches have been developed for smoothing the discontinuities in trivial waveforms to reduce or eliminate aliasing while attempting to preserve both the time and frequency domain responses of the original analog waveforms. The Bandlimited Step Method (BLEP) has been found to produce excellent results with low computational overhead. The correction scheme first starts with a sinc function—the impulse response of a low-pass filter—and uses it to generate offset values that are applied to the points around the discontinuity. This paper discusses the relationships that exist between the BLEP method, Gibbs Phenomenon, and the Lanczos Sigma correction method.

Details

Published in
AES Convention 141
AES Convention
141
Paper number
9670
Publication date
September 6, 2016
Session subject
Signal Processing
Affiliation
University of Miami, Coral Gables, FL, USA (See document for exact affiliation information.)
Type
Convention Paper