The didgeridoo produces infra sound frequencies that can be applied as a form of "no touch sound massage". The low frequency and infrasound producing characteristic of the didgeridoo have been reported to provide relief to a wide range of joint, muscular and skeletal related pain as well as promote accelerated healing in various forms of bone trauma. It can also be safely used post operatively on people who have received both metal and non-metal implants.
The didgeridoo has the unique potential to produce a range of frequencies that fall into the range of infrasound. The wave form graph (left) plots the frequencies against the relative magnitude of the sound of a didgeridoo. The average range of the strongest frequencies of a typical didgeridoo are in the 50-200 Hertz range (the two big spikes on the left) with several harmonics going up to about 1000Hertz. The didgeridoo also has the potential to produce in the range of infra-sound shown by the small spike near 0 Hertz (graphic courtesy of didjshop.com).