Digital recursive filters : a tutorial for filter designers with examples implemented in Csound and supercollider

• Main Author: Katsianos, Themis G.
• Other Authors: Pennycook, Bruce (advisor)
• Format: Others
• Language: en
• Published: McGill University 1997
• Subjects: Acoustic filters.
• Online Access: http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28283

Filters constitute an essential tool for manipulating the spectral content of a signal. While there is a plethora of filtering tools, both in the hardware and software domain, the majority of them are geared towards engineers and scientists, rather than sound designers and electroacoustic composers. The "common-practice" approach is to consider filters as post-production tools. This can be restrictive if filters are to be used as artistic tools, dynamically involved in the shaping of the sound. This thesis was written with this approach in mind its aim is (a) to provide a survey of the various digital recursive filters, enabling a filter designer to choose the one that suits his needs, (b) to teach filter designers, such as electroacoustic composers and sound designers how to calculate digital filter coefficients, and (c) implement filter algorithms using the familiar syntax of computer music languages such as Csound and SuperCollider .