灰腿叶猴(Pygathrix cinerea)声乐曲目的无监督声学分析

Q1 Mathematics

Journal of Computational Acoustics Pub Date : 2017-09-12 DOI:10.1142/S0218396X17500187

I. Riondato, Emanuele Cissello, E. Papale, O. Friard, M. Gamba, C. Giacoma

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引用次数: 5

摘要

对非人类声音的无监督分析很重要，不仅因为它们可以解码物种特定的显示，而且还可以理解通信信号的进化，这需要客观的定量调查。我们记录了圈养的灰背叶猴(Pygathrix cinerea)发出的1000多个声音。假设的声乐类别首先由其整体声学结构确定，考虑到持续时间和频谱特性。我们使用自动两两动态时间扭曲比较来处理每个呼叫，限制了先验假设的使用。然后我们进行了一个聚类分析，指出了25个聚类的存在，然后我们根据光谱信息标记为7种声音类型。

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Unsupervised Acoustic Analysis of the Vocal Repertoire of the Gray-Shanked Douc Langur (Pygathrix cinerea)

Unsupervised analyses of nonhuman vocal repertoires are important not only because they allow decoding species-specific displays, but also to understand the evolution of communication signals, which need objective quantitative investigations. We recorded more than 1000 vocalizations emitted by captive gray-shanked douc langur (Pygathrix cinerea). Putative vocal categories were first identified by their overall acoustic structure, considering duration and spectral properties. We processed each call using an automatic pairwise Dynamic Time Warping comparison, limiting the use of a priori assumptions. We then performed a cluster analysis that indicated the presence of 25 clusters, which we then labeled to seven vocal types according to spectrographic information.

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来源期刊

Journal of Computational Acoustics 物理-声学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Currently known as Journal of Theoretical and Computational Acoustics (JTCA).The aim of this journal is to provide an international forum for the dissemination of the state-of-the-art information in the field of Computational Acoustics. Topics covered by this journal include research and tutorial contributions in OCEAN ACOUSTICS (a subject of active research in relation with sonar detection and the design of noiseless ships), SEISMO-ACOUSTICS (of concern to earthquake science and engineering, and also to those doing underground prospection like searching for petroleum), AEROACOUSTICS (which includes the analysis of noise created by aircraft), COMPUTATIONAL METHODS, and SUPERCOMPUTING. In addition to the traditional issues and problems in computational methods, the journal also considers theoretical research acoustics papers which lead to large-scale scientific computations. The journal strives to be flexible in the type of high quality papers it publishes and their format. Equally desirable are Full papers, which should be complete and relatively self-contained original contributions with an introduction that can be understood by the broad computational acoustics community. Both rigorous and heuristic styles are acceptable. Of particular interest are papers about new areas of research in which other than strictly computational arguments may be important in establishing a basis for further developments. Tutorial review papers, covering some of the important issues in Computational Mathematical Methods, Scientific Computing, and their applications. Short notes, which present specific new results and techniques in a brief communication. The journal will occasionally publish significant contributions which are larger than the usual format for regular papers. Special issues which report results of high quality workshops in related areas and monographs of significant contributions in the Series of Computational Acoustics will also be published.