TY - RPRT TI - ESPERDYNE: A Dual-Band Heterodyne Monitor and Ultrasound Recorder for Bioacoustic Field Surveys AU - Umadi, R. PY - 2025 DO - 10.1101/2025.08.30.673206 UR - https://www.biorxiv.org/content/10.1101/2025.08.30.673206v1 ID - 10.1101/2025.08.30.673206 ER -