TY - JOUR T1 - Note on the Audibility of Single Sound Waves, and the Number of Vibrations Necessary to Produce a Tone JF - Proceedings of the Royal Society of London (1854-1905) VL - 50 SP - 318 EP - 323 PY - 1891/01/01/ UR - http://dx.doi.org/10.1098/rspl.1891.0042 M3 - doi:10.1098/rspl.1891.0042 AU - Herroun, E. AU - Yeo, G. ER -