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Transmission Characteristics of Primate Vocalizations: Implications for Acoustic Analyses

dc.contributor.authorMaciej, Peter
dc.contributor.authorFischer, Julia
dc.contributor.authorHammerschmidt, Kurt
dc.contributor.editorReby, David
dc.date.accessioned2012-11-21T10:48:39Z
dc.date.available2012-11-21T10:48:39Z
dc.date.issued2011-08-01
dc.relation.ISSN1932-6203
dc.identifier.urihttp://resolver.sub.uni-goettingen.de/purl?gs-1/8334
dc.description.abstractAcoustic analyses have become a staple method in field studies of animal vocal communication, with nearly all investigations using computer-based approaches to extract specific features from sounds. Various algorithms can be used to extract acoustic variables that may then be related to variables such as individual identity, context or reproductive state. Habitat structure and recording conditions, however, have strong effects on the acoustic structure of sound signals. The purpose of this study was to identify which acoustic parameters reliably describe features of propagated sounds. We conducted broadcast experiments and examined the influence of habitat type, transmission height, and re-recording distance on the validity (deviation from the original sound) and reliability (variation within identical recording conditions) of acoustic features of different primate call types. Validity and reliability varied independently of each other in relation to habitat, transmission height, and re-recording distance, and depended strongly on the call type. The smallest deviations from the original sounds were obtained by a visually-controlled calculation of the fundamental frequency. Start- and end parameters of a sound were most susceptible to degradation in the environment. Because the recording conditions can have appreciable effects on acoustic parameters, it is advisable to validate the extraction method of acoustic variables from recordings over longer distances before using them in acoustic analyses.
dc.format.extent10
dc.language.isoeng
dc.rightsopenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/2.5/
dc.subjectTransmission; Characteristics; Primate; Vocalizations; Acoustic; Analyses
dc.titleTransmission Characteristics of Primate Vocalizations: Implications for Acoustic Analyses
dc.typejournalArticle
dc.identifier.doi10.1371/journal.pone.0023015
dc.type.versionpublishedVersion
dc.identifier.fs581842
dc.bibliographicCitation.volume6
dc.bibliographicCitation.issue8
dc.type.subtypejournalArticle
dc.identifier.pmid21829682
dc.notesThis research was funded by the Deutsche Forschungsgemeinschaft: Fi 707/9
dc.bibliographicCitation.articlenumbere23015
dc.description.statuspeerReviewed
dc.bibliographicCitation.journalPLoS ONE


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