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Fractal Modulation Effects
Linköping University, Department of Science and Technology, Digital Media. Linköping University, The Institute of Technology. (Sound and Video Technology)
2013 (English)In: Proc. of Digital Audio Effects Conference (DAFx `06), Montreal, Canada: DAFx , 2013, 101-106 p.Conference paper, Published paper (Refereed)
Abstract [en]

Fractal modulation is obtained by forming a power weighted superposition of scaled and modulated versions of the signal. The resulting signal is self-similar with fractal characteristics. In this paper we explore fractal modulation as a powerful method to generate rich signals, useful both for the synthesis of complex sounds, like the sounds from natural events or ecological sounds, or as control functions of audio effects. The wavelet transform can be used as an efficient tool in order to generate a subset of fractal modulated signals that are power homogeneous. Any signal used as a seed for fractal modulation is transformed into a multiscale sound by means of a tree-structured multirate filter bank. Moreover, by superimposing a structured modulation scheme one can generate pseudo-periodic sounds whose partials have fractal behavior.

Place, publisher, year, edition, pages
Montreal, Canada: DAFx , 2013. 101-106 p.
Keyword [en]
fractal modulation, wavelets, digital audio effects, sound technology
National Category
Engineering and Technology Signal Processing
Identifiers
URN: urn:nbn:se:liu:diva-34752Local ID: 23077OAI: oai:DiVA.org:liu-34752DiVA: diva2:255600
Conference
Digital Audio Effects Conference 2006
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-12-08

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http://staffwww.itn.liu.se/~giaev/Eva06.pdf

Authority records BETA

Evangelista, Gianpaolo

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