The upper trace shows amplitude across the full twelve-second source. The lower image is a spectrogram computed from those same samples: time moves right, frequency increases upward, and brighter colors mean stronger components. The line marks playback position. Changing speed changes pitch and duration; the plots keep their source time and frequency axes.

All three sounds are generated locally from original mathematical synthesis in this page. No animal recordings, film audio, external samples, microphone, tracking or uploads are used. No species, date or recording location is claimed. Pause, Stop, sound changes, hidden tabs and page exit release audio resources.