SPHSC 261 SPHSC 261 The Nature Of Sound (3) Fundamental principles of sound and vibration with emphasis on examples relevant to the speech and hearing systems. Required for majors; open to nonmajors. Course overlaps with: SPHSC 354 and SPHSC 355. Offered: A. Autumn 2025 Line Number Section ID Credits Days/Times Room/Bldg 21785A3.0Tuesday, Thursday @ 1:00pm - 2:20pmG01 (EGL) 21786AATBDN/A UW Course Catalog UW Time Schedule