Modeling individual vocal differences in group-living lemurs using vocal tract morphology  

作　　者：Marco GAMBA Livio FAVARO Alessandro ARALDI Valentina MATTEUCCI Cristina GIACOMA Olivier FRIARD 

机构地区：[1]Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, Torino 10134, Italy [2]Zoom Torine S.p.A, Strada Piscina 36, Cumiana (Torino) 10040, Italy

出　　处：《Current Zoology》2017年第4期467-475,共9页动物学报（英文版）

摘　　要：Vocal individuality is widespread in social animals. Individual variation in vocalizations is a prereq- uisite for discriminating among conspecifics and may have facilitated the evolution of large complex societies. Ring-tailed lemurs Lemur catta live in relatively large social groups, have con- spicuous vocal repertoires, and their species-specific utterances can be interpreted in light of source-filter theory of vocal production. Indeed, their utterances allow individual discrimination and even recognition thanks to the resonance frequencies of the vocal tract. The purpose of this study is to determine which distinctive vocal features can be derived from the morphology of the upper vocal tract. To accomplish this, we built computational models derived from anatomical measurements collected on lemur cadavers and compared the results with the spectrographic out- put of vocalizations recorded from ex situ live individuals. Our results demonstrate that the mor- phological variation of the ring-tailed lemur vocal tract explains individual distinctiveness of their species-specific utterances. We also provide further evidence that vocal tract modeling is a power- ful tool for studying the vocal output of non-human primates.

关 键 词：formants indexical cues Lemur catta nasal resonance ring-tailed lemur. 

分 类 号：TN643[电子电信—电路与系统] S917[农业科学—水产科学]