Journal article
Morphing rhesus monkey vocalizations
Journal of neuroscience methods, Vol.170(1), pp.45-55
2008
DOI: 10.1016/j.jneumeth.2007.12.023
PMID: 18289695
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.
Details
- Title: Subtitle
- Morphing rhesus monkey vocalizations
- Creators
- Subhojit Chakladar - Max Planck Institute for Biological CyberneticsNikos K. Logothetis - Max Planck Institute for Biological CyberneticsChristopher I. Petkov - Max Planck Institute for Biological Cybernetics
- Resource Type
- Journal article
- Publication Details
- Journal of neuroscience methods, Vol.170(1), pp.45-55
- Publisher
- Elsevier B.V
- DOI
- 10.1016/j.jneumeth.2007.12.023
- PMID
- 18289695
- ISSN
- 0165-0270
- eISSN
- 1872-678X
- Language
- English
- Date published
- 2008
- Academic Unit
- Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984360008502771
Metrics
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