Traditional / experimental practice
Threshold IX · Silent Center
What remains where the sound withdraws? A sparse drone and the familiar binaural tone; three times in the middle of the session the sound draws back completely, leaving only the faint air of the room. These gaps are deliberate: the sound hasn't ended and will return softly after a few minutes. Listen to the silence in between, or to the natural sounds around you. The beat descends from 6 Hz to 4.5 Hz and rises to 8.5 Hz at the end. An experimental ritual; you can stop at any time.
A traditional or spiritual practice, not a scientific claim.
An experimental ritual. Avoid it if you have a history of dissociation, psychosis or severe anxiety. You can stop at any time.
Do not listen while driving or operating machinery.
Liner notes
- Bed
- Brown noise, Pink noise
- Body
- Cluster drone · 125 Hz
- Beat
- Binaural · 6 Hz beat
- What do you hear?
- even
How is this sound made?
- Binaural−24 dB
Left 197 HzΔ 6 Hz · ThetaRight 203 Hz
- Cluster drone−28 dB
Cluster drone · root 125 Hz, 2 oscillators
- Brown noise−46 dB
- Pink noise−56 dB
- Beat → 4.5 Hz over 10 min
- Beat → 8.5 Hz over 5 min
- Reverb: hall, 25% mix
In the room you can listen to each layer on its own, change its settings and save it as your own recipe.
Sound is generated on this device in real time; no files are downloaded from a server. There is a 15 s fade-in at the start and a 2 min fade-out at the end.
Compare with another sound
Hear both at the same loudness; drag the slider to the middle and they blend.
Mixed in the middle, these two sounds would create an unlabelled binaural beat: the slider crosses the middle with a short crossfade.
8 trials, half of them the same sound; get at least 7 right and the difference is audible. The result stays on this device.
What do we know, what don't we know?
T · Traditional/spiritual practiceLast reviewed 9 October 2026
No scientific claim is made; it is offered as a cultural or personal practice.
A traditional or spiritual practice, not a scientific claim.
Sound protocols and out-of-body experiences
An experimental listening ritual; not a scientific claim, and it makes no claim of astral travel or of consciousness leaving the body.
Evidence level T: Traditional/spiritual practiceWhat do we know?
- Out-of-body experience is a described neurological phenomenon; research links it to a failure to integrate bodily sensory information at the brain's temporo-parietal junction.Blanke & Arzy 2005
What don't we know?
- Evidence gapThere is no controlled evidence that sound leads to astral travel or that consciousness separates from the body.
Studies
- Blanke & Arzy 2005 · Review
A session's level is the weakest of its linked claims; it is never raised by a strong but unrelated claim.
Its neighbours on the map
The five sounds closest to this one by measured sound features.
- 1Threshold XI · Two ShoresWarm · textured · no melodyBoth binaural · both steady · same goal: explore
- 2Theta 6 Hz · Deep UnwindWarm · steady · no melodyBoth binaural · both steady
- 3Threshold II · Deep StillnessWarm · steady · no melodyBoth binaural · both steady · same goal: explore
- 4Drift Off · Theta to DeltaWarm · steady · no melodyBoth binaural · both steady
- 5Threshold IV · ReturnWarm · steady · no melodyBoth binaural · both steady · same goal: explore
Keep your device volume comfortable, preferably below 60%. You can also use your device's headphone-safety settings.