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A Granular Synthesis Strategy Based on Musical Harmony Theory Through a Fuzzy Logic Approach

Abstract:

This paper proposes a granular synthesis technique constrained to musical harmony theory that uses fuzzy logic to playback small portions of sound called grains. The algorithm distributes the grains in a two-dimensional space according to a musical structure shaped by a chord progression. Grains are playback in a timed sequence adjusted to a rhythmical pattern sorted by a fuzzy logic method that considers the energy and frequency of each grain across a defined harmonic environment. Tests regarding the distribution of grains and the generated sounds are performed to compare the effects of different keynotes in the musical structure, as well as considering the sound sources from where the grains were originally taken.