Multivariate Spectral Analysis of Transabdominally Recorded Intrauterine Acoustic Signals (TRIAS) Across Gestation. - Tamaki, Ryo; Igarashi, Fuyuka; Yamamoto, Ryutaro; Asano, Hiroshi; Oku, Akira; Akabane, Keiichiroh; Noshiro, Kiwamu; Hosokawa, Ami; Saito, Yoshihiro; Watari, Hidemichi; Umazume, Takeshi (Sensors (14248220), 2026)