A visual representation of sounds, such as bird song, plotted as a graph of frequency or pitch (vertical axis) versus time (horizontal axis). The darkness of the images gives a rough indication of the relative loudness of the different sounds. Found on https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter
A visual representation of sounds, such as bird song, plotted as a graph of frequency or pitch (vertical axis) versus time (horizontal axis). The darkness of the images gives a rough indication of the relative loudness of the different sounds.