The didgeridoo produces infra sound frequencies (reaching below 20 Htz) that can be applied as a "no touch sound massage". The low frequency 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 as shown (above and below right) has the potential to produce a range of frequencies that fall into the infra sound range. The wave form image (below) plots the frequencies against the relative magnitude of the sound of a didgeridoo. As you can see 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. What is interesting is that the didgeridoo also seems to produce near infra-sound as is indicated by the small spike near 0 Hertz, especially if you consider that our brain waves are in the 2-20 hertz rang didjshop.com

The Didgeridoo as shown (above and below right) has the potential to produce a range of frequencies that fall into the infra sound range.

The wave form image (below) plots the frequencies against the relative magnitude of the sound of a didgeridoo. As you can see 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. What is interesting is that the didgeridoo also seems to produce near infra-sound as is indicated by the small spike near 0 Hertz, especially if you consider that our brain waves are in the 2-20 hertz rang didjshop.com