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  Morphing rhesus monkey vocalizations

Chakladar, S., Logothetis, N., & Petkov, C. (2008). Morphing rhesus monkey vocalizations. Journal of Neuroscience Methods, 170(1), 45-55. doi:10.1016/j.jneumeth.2007.12.023.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C967-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-3088-D
Genre: Journal Article

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Chakladar, S1, 2, Author              
Logothetis, NK1, 2, Author              
Petkov, CI1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: The capability to systematically morph between different types of animal vocalizations will give us insights into how the features of vocal sounds are perceived by listening individuals. Following behavioral study, neurophysiological recordings in nonhuman animals, could reveal how neurons support the perception of communication signals. Signal processing algorithms are now available for creating sophisticated morphs between complex sounds, like human speech. However, most morphing approaches have been applied to harmonic sounds whose frequency components can be readily identified. We show that auditory morphing can be more generally applied by describing a procedure for using the STRAIGHT signal processing package to gradually morph between: (1) vocalizations from different macaque monkeys, (2) acoustically dissimilar types of monkey vocalizations, such as a ‘coo’ and a ‘grunt’, and (3) monkey and human vocalizations. We then evaluated the quality of the morphs and obtained classification curves from human listeners who seemed to categorize the monkey vocalizations much like the ones produced by humans. The outlined procedures prepare macaque-monkey vocalizations for neuroethological study and the approach establishes basic principles that will assist in creating suitable morphs of other natural sounds and animal vocalizations.

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 Dates: 2008-05
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1016/j.jneumeth.2007.12.023
BibTex Citekey: 4895
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Title: Journal of Neuroscience Methods
  Other : J. Neurosci. Meth.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 170 (1) Sequence Number: - Start / End Page: 45 - 55 Identifier: ISSN: 0165-0270
CoNE: https://pure.mpg.de/cone/journals/resource/954925480594