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Perceptually Relevant Models for Articulation in Synthesised Drum Patterns

In this study, we evaluate current techniques for drum pattern humanisation and suggest new methods using a probabilistic model. Our statistical analysis shows that both deviations from a fixed grid and corresponding amplitude values of drum patterns can have non-Gaussian distributions with underlying temporal structures. We plot distributions and probability matrices of sequences played by humans in order to demonstrate this. A new method for humanisation with structural preservation is proposed, using a Markov Chain and an Empirical Cumulative Distribution Function (ECDF) in order to weight pseudorandom variables. Finally we demonstrate the perceptual relevance of these methods using paired listening tests.

Authors: Stables, Ryan; Bullock, Jamie; Williams, Ian
Affiliation: Birmingham City University, Birmingham, UK
AES Convention:131 (October 2011) Paper Number:8478 Import into BibTeX
Subject:Audio Processing

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