A longitudinal corpus of sustained phonation and voluntary cough acoustics from three ISS crew members — derived acoustic measurements

Derived acoustic measurements from 254 verified voice and cough recordings acquired from three International Space Station crew members under a standardised twice-daily protocol, spanning a pre-flight quarantine phase and mission days 4 to 14. Each session comprised three voluntary coughs followed by sustained /a/, /i/ and /u/. Every recording exists in two forms — the original acquisition and a speech-enhanced version — and both are measured. Files contain sustained-vowel measures (F0, jitter, shimmer, HNR, CPPS), voluntary-cough measures under two segmentation conventions, a session inventory and per-record provenance. Audio is not included; participants appear only as M1, M2 and M3. See README.txt for column definitions and usage notes.