Dichotic

Interaural synthesis

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Preview · scope

Headphones

L 215.0 Hz

α Alpha

R 225.0 Hz

Oster alpha

0:00 / 20:00 · 10.00 Hz difference

A 10 Hz dichotic pair around A3, in the range Oster used to demonstrate the beat.

Do not listen while driving, in charge of a vehicle, or looking after a child. Dichotic is not responsible for effects.

Mixer

Method

A different pure tone in each ear. The beat is inferred by the brainstem, not present in the air. Headphones required.

220 Hz
10.00 Hz

Wave

Space

Hard left and right. This is the precise path for a binaural beat.

39%
Center

Noise bed

Pure

Glide the rate

20 min

Visual

Pure tones fatigue the ear faster than music. Keep the level comfortable. Open sessions stop at 45 minutes, Resonance at 2 hours, Laboratory at 4.

Why this tone

α Alpha

8–13 Hz

Relaxed wakefulness, especially with eyes closed.

Left
215.0 Hz
Right
225.0 Hz

Two pure tones go to opposite ears. The beat is not in the air. The superior olivary complex infers it from the phase difference. Listening effects on mood are mixed. The brainstem mechanism is not.

Mixed outcomes

The beat mechanism is real. Benefits for mood and focus are small and uneven.

Oster, Scientific American, 1973

  • Do not listen while driving.
  • Do not listen while you are in charge of a vehicle — a car, bike, boat, or anything else that moves.
  • Do not listen while you are looking after a child, or anyone else who needs you to stay alert.
  • Do not listen while operating machinery.
  • People notice different effects. Dichotic does not promise a result, and is not responsible for effects you feel or for what you do while listening.
  • This is not medical care and not a treatment. Stop if you feel dizzy, anxious, in pain, or unwell.
  • The picture can pulse. Look away if flicker bothers you.

Report effects — a report is filled in from this session. It is sent only if you ask, through Cloudflare email.

Stopped.