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Binaural Beats

Play slightly different frequencies into your left and right ear and you perceive a slow beat at the difference between them. Headphones are essential, and the scientific evidence for any effect is still unclear.

🔊 Sound is generated in the browser. Mic audio is never uploaded.

10Hz

Left 200Hz · right 210Hz

🎧 Headphones are essential. Through speakers the two tones mix in the air and no beat appears.
Beat frequency10Hz
Base frequency200Hz
Volume25%

The effect is still unclear

There is a claim that brainwaves follow the beat frequency, but the research is mixed and most of it points to a small effect at best. If it does help you focus or sleep, that may simply be the effect of listening to something quiet for a long time. Do not use it as a treatment.

What this tool does

  • Adjustable base frequency and difference
  • Delta, theta, alpha and beta presets
  • Separate left and right channels
  • Tells you headphones are required

Other sound tools

White Noise GeneratorNoise to help you focus or sleepSound Level MeterSee how loud it is around youVoice RecorderRecord, listen back and save a fileTone GeneratorMake a sound at any pitch you want

Start at a low volume — high frequencies and loud tones can damage your hearing.