Binaural Beats Generator Generate binaural beats for meditation, focus, and relaxation.

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Binaural Beats Generator

Generate binaural beats for meditation, focus, and relaxation.

Set Frequencies

Choose a base frequency and the desired binaural beat frequency.

Select Preset

Or pick a preset: Delta (sleep), Theta (meditation), Alpha (focus), Beta (alertness).

Listen

Use stereo headphones and press Play. The binaural effect requires headphones.

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What Is Binaural Beats Generator?

The Binaural Beats Generator creates binaural beats by playing slightly different frequencies in each ear. When you hear 200 Hz in one ear and 210 Hz in the other, your brain perceives a 10 Hz "beat" — a pulsing tone at the frequency difference. Different beat frequencies are associated with different brain states: Delta (1-4 Hz) for deep sleep, Theta (4-8 Hz) for meditation, Alpha (8-14 Hz) for relaxation, and Beta (14-30 Hz) for alertness. The tool uses stereo OscillatorNodes for precise frequency control. Headphones are required for the binaural effect.

Why Use Binaural Beats Generator?

Precise frequency control for accurate binaural beat generation
Presets for Delta, Theta, Alpha, and Beta brainwave states
Adjustable base frequency and carrier tone
Works entirely in your browser — no streaming needed

Common Use Cases

Meditation

Theta range (4-8 Hz) binaural beats support deep meditation sessions.

Focus Enhancement

Sharpen concentration during work or study with Alpha and Beta range (8-30 Hz) beats.

Sleep Aid

Delta range (1-4 Hz) beats promote relaxation and help with sleep onset.

Stress Relief

Play Alpha range (8-14 Hz) beats to ease tension and lower stress during breaks.

Technical Guide

Binaural beats are created using two OscillatorNodes, one panned fully left and one fully right using StereoPannerNode (or ChannelMergerNode). The left oscillator plays the base frequency (e.g., 400 Hz) and the right plays base + beatFrequency (e.g., 406 Hz for a 6 Hz theta beat). Both oscillators use sine wave type for a clean, pure tone. The GainNode controls volume with smooth ramping for start/stop. An optional background noise layer (pink or white) can be mixed in at low volume to make the listening experience more comfortable. The timer feature uses scheduled gain ramp for gradual fadeout. For visual feedback, the beat frequency is displayed and a simple animation pulses at the beat rate using requestAnimationFrame.

Tips & Best Practices

1
Stereo headphones are REQUIRED — the effect does not work with speakers
2
Listen at a comfortable, low volume — the beats work at any audible level
3
Allow 10-15 minutes for the entrainment effect to take hold
4
Start with Alpha (10 Hz) for a gentle relaxation effect before trying other ranges

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Frequently Asked Questions

Q Do I need headphones?

Yes, stereo headphones are required. Binaural beats work by presenting different frequencies to each ear, which is impossible with speakers.

Q What frequency should I use?

Delta (1-4 Hz) for sleep, Theta (4-8 Hz) for meditation, Alpha (8-14 Hz) for relaxation, Beta (14-30 Hz) for alertness.

Q Do binaural beats really work?

Research is ongoing. Some studies show effects on relaxation and attention. Individual experiences vary. They are generally considered safe for healthy adults.

Q Is it safe to listen to binaural beats?

Generally safe for healthy adults. People with epilepsy should consult a doctor first, as rhythmic auditory stimulation may trigger seizures in rare cases.

Q Does it need internet?

No. The tones are generated in your browser. Once loaded, it works fully offline.

About This Tool

Binaural Beats Generator is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.