Interactive Binaural Beats & Isochronic Frequency Calculator
Adjust the beat frequency (0.5–100 Hz) and carrier pitch (60–600 Hz) in real time. Use stereo headphones for binaural phase offset or switch to Isochronic for speakers.
Delivery Method
Quick Brainwave Band Presets
What are isochronic tones?
An isochronic tone is a single tone switched on and off at a regular rate. At 10 Hz, the tone pulses ten times per second. Unlike binaural beats, the rhythm exists in the sound wave itself, so both ears hear the same thing and speakers work perfectly.
Our generator uses a smooth pulse shape rather than a hard on/off switch, so the rhythm is clear without harsh clicks.
Isochronic tones vs. binaural beats
| Isochronic tones | Binaural beats | |
|---|---|---|
| Where the pulse comes from | The sound itself | The brain combines two tones |
| Headphones | Not needed | Required |
| Strength of the pulse | Clear and pronounced | Soft and subtle |
| Works well above 30 Hz | Yes | Less clearly |
| Research base | Smaller | Larger, but mixed |
The science of rhythmic sound
It is well established that the brain responds to rhythmic sound at the same rate: this is called the auditory steady-state response, and it is strongest around 40 Hz. Whether that response changes how focused or relaxed you feel is a separate and less settled question. Studies specifically on isochronic tones are few and small, so the same advice applies as for binaural beats: experiment, keep what works and do not expect a guaranteed effect.
Choosing a frequency
- 2–4 Hz (delta): very slow; use only when winding down.
- 6 Hz (theta): meditation and relaxation.
- 10 Hz (alpha): calm focus, reading.
- 18 Hz (beta): alertness for active work.
- 40 Hz (gamma): intense concentration; isochronic is the preferred delivery at this rate.
Because the pulse is pronounced, start with the volume lower than you would for binaural beats, and layer quiet brown noise or rain underneath if it feels too stark.
Rhythmic pulsing sound is not recommended if you have epilepsy or a seizure disorder.
Frequently asked questions
Do isochronic tones work without headphones?
Yes. The pulse is part of the sound itself, so speakers work just as well as headphones.
Are isochronic tones better than binaural beats?
They are stronger and more convenient, especially above 30 Hz. Binaural beats are subtler and have been studied more. Try both and choose what you find more pleasant.
Are isochronic tones safe?
At a comfortable volume, for most people, yes. Avoid them if you have epilepsy or a seizure disorder, and do not listen while driving.