Results of the acoustic analysis.

The age and the sex of each recorded individual, the number of orally and nasally emitted rumbles (and the percentage of those recorded in each context, respectively), and the mean duration, mean fundamental frequency, mean formant frequency values 1 and 2, and mean sound pressure level (SPL) ± SD of rumbles per individual are presented. The estimated vocal tract length (VTL) for each individual based on the spacing in Hz between formants 1 and 2 for nasal and oral rumbles is also given.

本数据集呈现了每只记录个体的年龄与性别，口腔及鼻腔发出的隆隆声的数量（分别对应两种发声场景下的记录占比），以及每只个体所发出隆隆声的平均时长、平均基频（fundamental frequency）、第1与第2共振峰（formant）频率均值，还有平均声压级（SPL）±标准差（SD）。此外，还提供了基于鼻腔与口腔隆隆声的第1、2共振峰间距（单位：Hz）估算得到的每只个体的声道长度（VTL）。