Frequencies
Tones to listen to.
Generated in your browser, at the exact frequency, for as long as you want. We make no claims about what they do — but where research exists, it is linked below, including the research that disagrees.
Two tones a few Hz apart, one per ear — you hear the difference between them. Needs headphones: on speakers the two sum in the air and there is nothing left to hear.
A sustained tone tires ears faster than music at the same level. The slider tops out well below your device maximum on purpose.
Delivered as a binaural beat, because 7.83 Hz is below hearing and below what any speaker or earbud reproduces. Two tones 7.83 Hz apart, one per ear — you hear the difference between them.
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Research · 7.83 Hz · Schumann resonance
Contested7.83 Hz is a real physical measurement — the fundamental resonance of the cavity between the Earth and the ionosphere. That it is real says nothing about what hearing a 7.83 Hz beat does to a person, which is the binaural-beat question below.
- Efficacy of binaural auditory beats in cognition, anxiety, and pain perception: a meta-analysis
Garcia-Argibay, Santed & Reales · Psychological Research, 2019
Meta-analysis·22 studies, 35 effect sizes
Overall medium effect (g = 0.45) on memory, attention, anxiety and pain perception. Effect direction and size depended on the frequency used, exposure length, and whether exposure came before or during the task.
Caveat. A pooled effect across heterogeneous small studies. It measures reported outcomes, not mechanism.
- Binaural beats to entrain the brain? A systematic review of the effects of binaural beat stimulation on brain oscillatory activity
Ingendoh, Posny & Heine · PLOS ONE, 2023
Systematic review·14 studies
Inconclusive. Five studies supported the brainwave-entrainment hypothesis, eight found no entrainment effect, and one was mixed.
Caveat. The authors note that methodological heterogeneity limits comparability across this literature. This is the study that questions the proposed mechanism, and it ships alongside the positive results rather than instead of them.
Research · Binaural
ContestedOutcome measures move; the proposed mechanism does not hold up. A meta-analysis finds a medium effect on anxiety, pain and cognition, while a systematic review finds the brainwave-entrainment explanation unsupported more often than not.
- Efficacy of binaural auditory beats in cognition, anxiety, and pain perception: a meta-analysis
Garcia-Argibay, Santed & Reales · Psychological Research, 2019
Meta-analysis·22 studies, 35 effect sizes
Overall medium effect (g = 0.45) on memory, attention, anxiety and pain perception. Effect direction and size depended on the frequency used, exposure length, and whether exposure came before or during the task.
Caveat. A pooled effect across heterogeneous small studies. It measures reported outcomes, not mechanism.
- Binaural beats to entrain the brain? A systematic review of the effects of binaural beat stimulation on brain oscillatory activity
Ingendoh, Posny & Heine · PLOS ONE, 2023
Systematic review·14 studies
Inconclusive. Five studies supported the brainwave-entrainment hypothesis, eight found no entrainment effect, and one was mixed.
Caveat. The authors note that methodological heterogeneity limits comparability across this literature. This is the study that questions the proposed mechanism, and it ships alongside the positive results rather than instead of them.
Studies are listed against the method as well as the frequency, because the published work is about techniques like binaural beats — not about the individual numbers. A preset can honestly have no research of its own while the method it uses has plenty.