Web-based sound analysis tool for the Macaulay Sound Library, Cornell Lab (https://www.macaulaylibrary.org). Macaulay Library provides more than 400,000 playable audio files (http://macaulaylibrary.org/index.do), and even permits spectrographic online visualization using RavenViewer as a free browser plugin (http://www.birds.cornell.edu/brp/software/sound-analysis-tools). The example shows a recording of a Virtuoso katydid by T. Walker, who provided most of the Orthoptera sound recordings for this sound library. For further details, see text.