Binaural beats are a sound effect your brain creates when each ear hears a slightly different tone through headphones. Play 200 Hz in one ear and 210 Hz in the other, and you perceive a gentle 10 Hz “beat”. People listen to binaural beats to relax, focus, ease anxiety and prepare for sleep.
Last updated: 30 October 2026
Reading time: about 15 minutes
How we wrote this guide: this guide was written by Saj Ali. Every research claim below links to the original study, its DOI or an official record.
Quick answer: do binaural beats work?
- A meta-analysis found a real, medium-sized effect. Across 22 studies, binaural beats had an overall effect size of g = 0.45 on memory, attention, anxiety and pain perception (Garcia-Argibay et al., 2019).
- They may calm nerves before stressful events. In a randomised trial, patients who listened to binaural beats before surgery had a 26.3% fall in anxiety, compared with 11.1% for plain audio and 3.8% for no audio (Padmanabhan et al., 2005).
- Timing matters. Effects were larger when people listened before a task and for longer periods (Garcia-Argibay et al., 2019).
- They are free and easy to try. All you need is a pair of stereo headphones and a free track or generator such as the myNoise binaural beat generator.
Contents
- What Are Binaural Beats?
- Where Binaural Beats Came From
- How Binaural Beats Work
- Types of Binaural Beat Sessions
- How to Use Binaural Beats: A Step-by-Step Guide
- What Are Binaural Beats Used For?
- What the Research Shows
- Binaural Beats vs Isochronic Tones vs Music
- A Simple Daily Binaural Beats Routine
- Choosing Tracks, Apps and Programmes
- Watch, Listen and Follow
- Frequently Asked Questions About Binaural Beats
- Key Takeaways
- Explore More on Self Help Supermarket
- Sources
What Are Binaural Beats?
“Binaural” means “with two ears”. Binaural beats happen when you listen to two pure tones of slightly different frequencies, one in each ear. Your brain combines them and you hear a third, pulsing tone, called a beat, at the difference between the two. If your left ear hears 200 Hz and your right ear hears 210 Hz, you perceive a 10 Hz beat.
The fascinating thing is that this beat does not exist in the air. It is created inside your auditory system, in the brainstem, where signals from both ears meet. The physicist Gerald Oster described this clearly in a famous 1973 Scientific American article, “Auditory Beats in the Brain”, and suggested binaural beats could be a useful tool for research (Oster, 1973).
Today, binaural beats are among the most popular audio tools for wellbeing. You will find millions of tracks on YouTube and streaming services, apps dedicated to them, and programmes such as Hemi-Sync from The Monroe Institute.
Binaural Beats at a Glance
| First described | 1839, by physicist Heinrich Wilhelm Dove (Chaieb et al., 2015) |
| Popularised | 1973, Gerald Oster, Scientific American (Oster, 1973) |
| What you need | Stereo headphones and a binaural track or generator |
| Typical session | 15 to 60 minutes |
| Common uses | Relaxation, focus, anxiety, sleep, meditation |
| Overall research effect | g = 0.45 across memory, attention, anxiety and pain (Garcia-Argibay et al., 2019) |
| Cost | Free to low-cost; premium apps and programmes are optional |
Where Binaural Beats Came From
The story of binaural beats starts in 1839, when the physicist Heinrich Wilhelm Dove first reported that two slightly different tones played separately to each ear produce a perceived beat (Chaieb et al., 2015). For more than a century, the effect was mainly a curiosity of acoustics.
That changed in 1973, when biophysicist Gerald Oster published “Auditory Beats in the Brain” in Scientific American. Oster explained how binaural beats are processed in the brain and proposed them as a tool for studying hearing and the brain (Oster, 1973). His article sparked decades of research and public interest.
Robert Monroe and Hemi-Sync
Around the same time, the American broadcasting executive Robert A. Monroe was developing audio techniques to explore states of consciousness. His organisation, The Monroe Institute, created Hemi-Sync, an audio technology that blends binaural beats with music, sounds and guided voice. Its best-known programme, the Gateway Experience, is now available as Gateway Voyage, including a virtual version guided by Monroe’s own voice (The Monroe Institute).
The digital age
The arrival of affordable headphones, MP3 players and, later, YouTube and apps made binaural beats available to everyone. Today you can choose from thousands of free tracks for sleep, study and meditation, and generate your own custom beats online.
How Binaural Beats Work
To understand binaural beats, it helps to know a little about brainwaves and how your ears and brain work together.
The brainstem creates the beat
Each ear sends its signal to the brainstem, in an area called the superior olivary complex, which compares the timing of sounds from both ears. When the two tones differ slightly, the brain perceives a beat at the difference frequency (Oster, 1973; Chaieb et al., 2015). That is why you need headphones: if the two tones mix in the air first, you hear an ordinary acoustic beat instead.
Brainwaves and entrainment
Your brain produces electrical rhythms, or brainwaves, that change with your state. A popular idea is that listening to a binaural beat encourages brain activity to fall into step with it, a process called entrainment. A review by Chaieb and colleagues describes how researchers are studying this, alongside effects of binaural beats on mood, anxiety and thinking (Chaieb et al., 2015).
The brainwave bands
| Band | Frequency | Associated with | Popular uses |
|---|---|---|---|
| Delta | About 1–4 Hz | Deep sleep | Sleep tracks |
| Theta | About 4–8 Hz | Drowsiness, deep relaxation, meditation | Meditation, visualisation |
| Alpha | About 8–13 Hz | Calm, relaxed alertness | Stress relief, light focus |
| Beta | About 13–30 Hz | Active thinking | Work, study |
| Gamma | About 30–100 Hz, often 40 Hz | Concentration and information processing | Focus and study tracks |
The relaxation effect
Part of the benefit of binaural beats also comes from the ritual itself: sitting down, putting on headphones, shutting out distractions and listening to a steady, soothing sound. This combination naturally supports relaxation and focus, and it pairs well with practices such as meditation and sound healing.
Types of Binaural Beat Sessions
Pure tones
The simplest tracks contain only the two tones. They sound like a soft hum or pulse. Some people find them very focusing; others find them a little dull after a while.
Tones with music or nature sounds
Most popular tracks blend binaural beats with ambient music, rain, ocean waves or pink noise. The meta-analysis by Garcia-Argibay and colleagues found that masking the beat with noise was not necessary for it to work, so you can choose whatever you enjoy (Garcia-Argibay et al., 2019).
Guided programmes
Programmes such as Hemi-Sync combine binaural beats with a guiding voice that leads you through relaxation, visualisation or meditation exercises (The Monroe Institute). Many guided meditations and self-hypnosis recordings also include binaural tones.
Custom generators
Online generators, such as the myNoise binaural beat generator, let you choose your own beat frequency and background sounds, so you can experiment freely.
Isochronic tones and monaural beats
Isochronic tones are a single tone switched on and off at regular intervals. Monaural beats are created when two tones are mixed before they reach your ears. Both can be played through speakers, unlike binaural beats. Chaieb and colleagues review research on both types of “auditory beat stimulation” (Chaieb et al., 2015).
How to Use Binaural Beats: A Step-by-Step Guide
This routine works for relaxation, focus or winding down for sleep. The key ingredients are stereo headphones, a comfortable volume and enough listening time.
- Choose your goal. Decide what you want from this session: relaxation, focus, meditation or sleep. This tells you which frequency range to choose.
- Pick a beat frequency. As a rough guide, people choose delta (about 1–4 Hz) for sleep, theta (4–8 Hz) for deep relaxation and meditation, alpha (8–13 Hz) for calm alertness, beta (13–30 Hz) for active focus and gamma (around 40 Hz) for concentration. Start with alpha if you are unsure.
- Put on stereo headphones. Binaural beats only work when each ear receives its own tone, so you need stereo headphones or earbuds. Speakers will not create the effect. Check that left and right are not swapped or mixed to mono.
- Set a comfortable volume. Keep the volume low to moderate, just loud enough to hear the tone clearly. Many tracks blend the beat with music, rain or noise, which is fine; research suggests a masking sound is not needed but does not hurt.
- Get comfortable and settle. Sit or lie down somewhere you will not be disturbed. Close your eyes if you are relaxing, or open your work if you are focusing. Take a few slow breaths.
- Listen for at least 15–30 minutes. Longer listening tends to work better. For focus or a stressful event, try listening before you start, since studies found exposure before a task was more effective.
- Notice and record how you feel. Afterwards, rate your calm, focus or sleepiness from 0 to 10. Keeping a simple log for a week helps you find the frequencies and timings that suit you.
- Use it safely. Do not listen while driving or doing anything that needs your full attention, and keep the volume comfortable to protect your hearing.
Binaural beats combine beautifully with other practices. Try them during meditation, relaxation or a self-hypnosis session.
What Are Binaural Beats Used For?
- Anxiety and nerves. Research found binaural beats reduced anxiety, including before surgery (Padmanabhan et al., 2005; Garcia-Argibay et al., 2019). See our guides to anxiety and panic attacks.
- Stress and relaxation. Alpha and theta tracks are popular for unwinding after work. Pair them with our stress management guide.
- Focus and attention. The meta-analysis found effects on attention and memory (Garcia-Argibay et al., 2019). Many people use beta or 40 Hz tracks for study. See ADHD and motivation.
- Quieting a busy mind. A steady sound gives the mind something to rest on. See overthinking.
- Sleep. Delta and theta tracks are some of the most popular sleep sounds online. See our sleep guide for a full bedtime routine.
- Pain perception. The meta-analysis included pain perception among the outcomes binaural beats improved (Garcia-Argibay et al., 2019). See pain relief.
- Meditation and visualisation. Theta tracks are often used to deepen meditation, visualisation and the Silva Method.
What the Research Shows
The 2019 meta-analysis
The most complete summary is a meta-analysis by Garcia-Argibay, Santed and Reales, published in Psychological Research. They pooled 22 studies with 35 effect sizes and found an overall medium effect (g = 0.45) of binaural beats on memory, attention, anxiety and pain perception (Garcia-Argibay et al., 2019). They also found three practical insights:
- Listening before a task was more effective than listening during it.
- Longer exposure produced bigger effects.
- Masking the tones with noise was not necessary.
Anxiety before surgery
In a randomised controlled trial, adults about to have general anaesthesia for day surgery were assigned to binaural beat audio, the same audio without binaural beats, or no audio. Anxiety fell by 26.3% in the binaural beat group, 11.1% in the audio-only group and 3.8% in the no-audio group (Padmanabhan et al., 2005).
Mood and cognition
The review by Chaieb and colleagues in Frontiers in Psychiatry summarises research on auditory beats and their effects on mood states, anxiety and cognition, and highlights them as a promising, easy-to-use tool worth further research (Chaieb et al., 2015).
The studies at a glance
| Study | Type | Main finding |
|---|---|---|
| Garcia-Argibay et al., 2019 | Meta-analysis, 22 studies | Medium effect (g = 0.45) on memory, attention, anxiety and pain |
| Padmanabhan et al., 2005 | RCT, day-surgery patients | 26.3% fall in pre-operative anxiety vs 11.1% and 3.8% |
| Chaieb et al., 2015 | Review | Promising effects on mood, anxiety and cognition |
| Oster, 1973 | Classic article | Explained how the brain creates binaural beats |
Studies vary in the frequencies and timings they use, so results differ from one study to another. Experimenting with your own routine and noticing what works for you is a sensible approach.
Binaural Beats vs Isochronic Tones vs Music
| Binaural beats | Isochronic tones | Relaxing music | |
|---|---|---|---|
| How it works | Two different tones, one per ear; brain creates the beat | One tone pulsing on and off | Melody, rhythm and tempo |
| Headphones needed | Yes | No | No |
| Research base | Meta-analysis of 22 studies | Smaller | Large, for relaxation and mood |
| Best for | Focus, calm, pre-task preparation | Listening without headphones | Everyday enjoyment and relaxation |
Many tracks combine binaural beats with music, so you can enjoy the best of both. For more sound-based approaches, see our sound healing guide.
A Simple Daily Binaural Beats Routine
Binaural beats are most useful when they become a habit tied to specific moments in your day. Here is an easy routine you can adapt.
Morning: set up for focus
Before you start your most important task, listen to 15–20 minutes of an alpha or beta track while you plan your day, read or review notes. Because research found exposure before a task was more effective, this “warm-up” may help you settle into concentrated work (Garcia-Argibay et al., 2019).
Midday: a calm reset
After lunch or a busy meeting, take a 10–15 minute break with an alpha track. Close your eyes, breathe slowly and let your shoulders drop. Many people find this short reset helps them avoid the afternoon slump and return to work refreshed.
Before a stressful event
Before an exam, interview, presentation or medical appointment, listen to a calming track for 20–30 minutes. The surgery study above shows how this kind of preparation can ease nerves (Padmanabhan et al., 2005).
Evening: wind down
An hour before bed, dim the lights, put your phone on do not disturb and listen to a theta or delta track while you stretch, read or breathe slowly. If you prefer not to sleep in headphones, set a timer so the track stops after 30–45 minutes.
Common mistakes to avoid
- Using speakers. Without headphones, you will not hear a binaural beat.
- Listening too loudly. A soft volume is all you need.
- Giving up too soon. Give each frequency at least a week of regular sessions before judging it.
- Using low-quality files. Poor compression can blur the two tones.
Choosing Tracks, Apps and Programmes
There is a huge choice of binaural beat content. Here is how to pick well.
- Check it is truly binaural. Good tracks state the carrier tones and beat frequency, and say “use headphones”.
- Choose good audio quality. Heavily compressed audio can blur the tones. Download or stream at a good quality setting.
- Match the frequency to your goal. Use the brainwave table above as a guide.
- Prefer longer sessions. Research suggests longer exposure works better, so a 20–60 minute track is ideal.
- Try free first. YouTube tracks and free generators let you experiment before you pay for an app or programme.
Costs
Free tracks and generators are widely available. Dedicated apps and guided programmes, such as those from The Monroe Institute, are paid or subscription-based. Check the current price before you buy.
Watch, Listen and Follow
Start with a short explainer, then try a free guided Hemi-Sync meditation and a few binaural tracks with headphones on.
Videos
- Do Binaural Beats Increase Focus & Attention? – Huberman Lab Clips. Neuroscientist Dr Andrew Huberman on binaural beats and focus.
- How Binaural Beats Boost Brainwaves – Scientific Breakdown – Stefan Burns. A clear explainer of the science.
- Free Hemi Sync Guided Meditation – Monroe Institute. A free guided session from the Monroe Institute.
- Gateway Voyage Open Exercise – Monroe Institute. An open exercise from the Gateway programme.
- Interstellar Journey | Relaxing Music with Hemi-Sync® Frequencies – Hemi-Sync®. Ambient music with Hemi-Sync frequencies.
- Alpha Binaural Beat – 10Hz (1h Pure) – Samuel Schüpbach. A one-hour pure 10 Hz alpha track for calm focus.
- Overstimulated? Enter Alpha ★ 10Hz Binaural Beats – SleepTube. Alpha beats with forest and water sounds.
- Intense Study – 40Hz Gamma Binaural Beats – Study Sonic Focus. A 40 Hz track for study and focus.
- The Deepest Healing Sleep | 3.2Hz Delta Brain Waves – SleepTube. A delta track for winding down at night.
Free tools and programmes
- myNoise binaural beat generator – make your own custom binaural beats in your browser.
- The Monroe Institute – home of Hemi-Sync and the Gateway programmes, with free guided meditations.
Further reading
- Oster, G. (1973). “Auditory Beats in the Brain”. Scientific American – the classic introduction (Oster, 1973).
- Chaieb, L., et al. (2015). “Auditory Beat Stimulation and its Effects on Cognition and Mood States” – a readable open-access review (Chaieb et al., 2015).
Frequently Asked Questions About Binaural Beats
Do binaural beats really work?
A 2019 meta-analysis of 22 studies found a medium-sized effect (g = 0.45) of binaural beats on memory, attention, anxiety and pain perception. Results vary between studies, so it is worth testing different frequencies for yourself.
Do I need headphones for binaural beats?
Yes. Each ear must hear its own tone for your brain to create the beat. Stereo headphones or earbuds work; speakers do not.
Which binaural beat frequency is best for sleep?
People most often choose delta (about 1–4 Hz) or theta (4–8 Hz) tracks for sleep. Combine them with a calm bedtime routine and a comfortable volume.
Which frequency is best for focus?
Alpha (8–13 Hz) is popular for calm focus, and beta (13–30 Hz) or 40 Hz gamma tracks are popular for study. Research suggests listening before a task can be especially helpful.
How long should I listen to binaural beats?
Longer exposure tended to produce bigger effects in research. Aim for at least 15 to 30 minutes per session.
Can binaural beats help with anxiety?
Studies suggest they can. In one randomised trial, patients who listened before surgery had a 26.3% fall in anxiety, more than twice the fall seen with plain audio.
Are binaural beats safe?
For most people, listening at a comfortable volume is a simple, low-risk practice. Avoid listening while driving or doing anything that needs full attention.
Key Takeaways
- Binaural beats are a perceived beat created in the brain when each ear hears a slightly different tone.
- They were discovered in 1839 and popularised by Gerald Oster in 1973.
- A meta-analysis of 22 studies found a medium effect on memory, attention, anxiety and pain perception.
- Listening before a task and for longer periods works best.
- You need stereo headphones, but noise masking is optional.
- They are free to try and pair well with meditation, relaxation and self-hypnosis.
Explore More on Self Help Supermarket
Use these guides alongside this one:
- Sleep – a complete guide to better sleep
- Anxiety – calming tools that work
- Stress management – daily stress relief
- ADHD – focus strategies
- Overthinking – quiet a busy mind
- Panic attacks – settle your nervous system
- Motivation – get into a focused state
- Sound healing – other ways to heal with sound
- Meditation – deepen your practice
- The Silva Method – alpha-level mind training
- Flow state – find deep focus
- Browse all self-help techniques – compare every method on Self Help Supermarket.
Sources
- Garcia-Argibay, M., Santed, M. A., & Reales, J. M. (2019). Efficacy of binaural auditory beats in cognition, anxiety, and pain perception: A meta-analysis. Psychological Research, 83(2), 357–372. https://doi.org/10.1007/s00426-018-1066-8
- Chaieb, L., Wilpert, E. C., Reber, T. P., & Fell, J. (2015). Auditory beat stimulation and its effects on cognition and mood states. Frontiers in Psychiatry, 6, 70. https://doi.org/10.3389/fpsyt.2015.00070
- Padmanabhan, R., Hildreth, A. J., & Laws, D. (2005). A prospective, randomised, controlled study examining binaural beat audio and pre-operative anxiety in patients undergoing general anaesthesia for day case surgery. Anaesthesia, 60(9), 874–877. https://doi.org/10.1111/j.1365-2044.2005.04287.x
- Oster, G. (1973). Auditory beats in the brain. Scientific American, 229(4), 94–102. https://doi.org/10.1038/scientificamerican1073-94
- The Monroe Institute. https://www.monroeinstitute.org/
- myNoise. Binaural brainwave generator. https://mynoise.net/NoiseMachines/binauralBrainwaveGenerator.php
Self Help Supermarket guides are for general information and are not a substitute for professional medical or psychological advice.
