Didgeridoo (Fundamental)
Directly measured, standardized, or well-supported in mainstream scientific or technical literature.
This entry describes an instrument or resonance reference. Therapeutic outcomes depend on context, level, instrument build, and listener response.
Review the evidence modelThe didgeridoo produces a deep drone typically around 50-80 Hz. One of the world's oldest instruments (40,000+ years). Rich in overtones through vocal tract shaping (circular breathing). The low drone can induce meditative states.
Sources
Historical, cultural, and practitioner sources used to document how frequencies are talked about in practice communities.
Traditional and practitioner sound-healing sources.
Historical Use
Aboriginal ceremony, healing, trance induction (40,000+ years of use)
Octave Ladder
Every audible octave of this frequency — the same tone, higher and lower.
Nearby in the Atlas
Entries within ±35 cents of this tone when reduced to the same octave — candidates for pairing or comparison.