Binaural beats are a sound effect made by playing two slightly different tones, one in each ear. The brain perceives a third “beat” that equals the difference between the two tones. This beat is the part that matters for brain entrainment, not the audible tone itself.
Theta beats sit between 4 and 8 hertz. The lower end, near 4 hertz, is close to deep sleep rhythms called delta. The higher end, near 8 hertz, is near relaxed wakefulness called alpha. People do not respond the same way. Some feel calmer with 4 or 5 hertz, others with 7 or 8 hertz. Trying a few options is reasonable.
Many tracks include a base tone you can hear, such as 200 to 500 hertz. That base tone mainly affects comfort and sound color. The brain entrains to the difference between the two ears, which is the theta beat. The beat is subtle and can be hard to pick out by ear, which is normal.
Early research suggests possible benefits for relaxation, stress, mood, and sleep, and some studies report effects on attention or pain. Results are not consistent, and methods vary, so evidence remains uncertain. If you use binaural beats, listen with headphones, keep volume low, and treat this as a simple aid, not a medical treatment. Do not use them while driving or in any task that needs full attention. People with a history of seizures or strong sound sensitivity should seek medical advice first.
Practical use: choose a theta beat between 4 and 8 hertz, test a few options, and give each one a fair trial over days or weeks. Focus on comfortable loudness and regular practice. You can find many tracks at specific beats such as 4 hertz, 6 hertz, or 7.5 hertz on common streaming platforms.
Testimonial (lost the source):
That’s a 6Hz beat, which is fine. Theta goes from about 4hz-8Hz. 4Hz is closer to delta sleep, and 8Hz is close to alpha awake. Some people respond better to 4Hz, some reposed better to 7.5Hz – and then everything in between. So you can just type in “4Hz theta” into youtube, or “7Hz theta” and so on, and you’ll find different tones.
Listen to theta waves and other binaural beats daily.
There’s alot of binaural beats that will have the base frequency AND the binaural beat underneath. The base frequency is what you can hear, and it will be lower or higher – like 224Hz, or 48Hz, or 132Hz, etc. That really doesnt matter too much, though some of those frequencies resonate with people more than others. What actually works is the binaural beat frequency underneath and theta is always 4hz-8hz. It’s ready hard to hear the binaural beat. After a while you can start to pick it out, or even feel it. But it’s really in the background.
Scientific Reports – Effects of daily listening to 6 Hz binaural beats – 2024
Preliminary trial in healthy adults found that 10 minutes of 6 hertz listening each day was linked with changes in brain markers of attention, suggesting possible cognitive effects, though larger studies are needed.
Sleep – Effect of dynamic binaural beats on sleep quality – 2024
Introduced a changing, “dynamic” beat design and reported improved sleep quality in a controlled study, indicating that sleep outcomes may depend on how beats are delivered.
European Journal of Pain – Reduced pain and analgesic use after acoustic binaural beat stimulation – 2020
Reported that theta-range beats were associated with lower pain ratings and medication use in a clinical context, supporting possible analgesic effects, with caution due to study limits.
Applied Sciences – The efficiency of binaural beats on anxiety and depression, a systematic review – 2024
Review of randomized and controlled studies found mixed but sometimes positive effects on anxiety and depression, with heterogeneous methods and a call for better trials.
Psychophysiology, Neuroscience Methods – Binaural beats to entrain the brain, a systematic review – 2023
Summarizes evidence that the difference frequency drives the effect and notes that beat perception is often clearest with carrier tones near the mid hundreds of hertz. Overall conclusions are cautious about consistent entrainment.
Frontiers in Human Neuroscience – Binaural beats through the auditory pathway – 2020
Explains the physiology of how the auditory system constructs the binaural beat and why mid range carriers can aid perception of the beat.
Frontiers in Human Neuroscience – Review of EEG signal bands – 2022
Provides standard EEG band definitions used in research, including theta at about 4 to 7 hertz and delta below that range.
ScienceDirect Topic Page – Brain waves overview
Gives a general reference for brain wave bands and the placement of theta between delta and alpha in typical descriptions.
WebMD – Binaural beats, what they are and possible benefits – 2025
Plain language overview of how binaural beats are made, what they might do, and typical safety advice for everyday use.
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