A comparison is made between two systems of realtime sample selection using timbral proximity that has relevance for live performance. Samples in large sample libraries are analysed for audio features (amplitude RMS, spectral centroid, spectral flatness, and spectral energy using a Bark auditory modeler), and this data is statistically analysed and stored. Two methods of organisation are described: the first uses fuzzy logic to rate sample similarity, the second uses a self-organising map. The benefits and detriments of each method are described.
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Eigenfeldt, A., Pasquier, P. “Realtime Timbral Organisation: Selecting Samples Based Upon Similarity”, Organized Sound, 15:2, 2010, 159–166.