420mm x 297mm. Ink on paper. Axidraw plotter

‘Anthropophony’ is a term “used to describe all sound produced by humans”.  This plot is a visualisation of a sound recording. It is a field recording of a throat singing and Tibetan singing bowls. 
I sampled a high number of discreet frequency bands to create a really detailed visualisation of the sound. Each ring is a different frequency with the highest frequencies around the outside of the disc with the low frequencies at the centre.