2026-10-12T08:20:58Z https://www.scidb.cn/oai

10.57760/sciencedb.33478 2026-04-17T18:07:15Z

2026-04-17 Structured pitch and temporal organization in budgerigar vocal sequences: indoor recordings and derived acoustic dataset doi:10.57760/sciencedb.33478 en This dataset provides indoor recordings and derived acoustic measurements of budgerigar (Melopsittacus undulatus) vocalizations, designed to support the analysis of sequential pitch and temporal structure in animal communication.The dataset includes (i) raw indoor audio recordings collected under controlled or semi-controlled conditions, (ii) derived measurements of pitch intervals (in semitones) and inter-onset intervals (IOIs, in seconds) between successive vocal units, (iii) segment-level pitch summaries, and (iv) null model samples for statistical comparison.Vocal units were segmented based on voiced signal detection, and fundamental frequency (F0) was estimated using an autocorrelation-based method implemented in Praat via Parselmouth. Pitch intervals were computed as logarithmic differences between adjacent units, and IOIs were defined as onset time differences within recordings.In addition, the dataset includes a reference metadata table for field recordings obtained from the Xeno-canto database, ensuring full traceability and reproducibility. Original field recordings are not redistributed but can be accessed via provided URLs and associated licenses.This dataset supports reproducible research on the relational organization of vocal sequences, particularly the structured patterns of pitch transitions and temporal clustering in a vocal learning species. bioacoustics; vocal communication; budgerigar; pitch interval; inter-onset interval; vocal learning; animal behavior; acoustic analysis; birdsong; sequence structure Tianyu Xi PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank