Interactive Binaural Beats & Isochronic Frequency Calculator
Adjust the beat frequency (0.5–100 Hz) and carrier pitch (60–600 Hz) in real time. Use stereo headphones for binaural phase offset or switch to Isochronic for speakers.
Delivery Method
Quick Brainwave Band Presets
What are beta brainwaves?
Beta waves are fast, low-amplitude electrical rhythms between roughly 13 and 30 Hz that dominate the waking adult brain whenever your eyes are open and you are actively engaged with the outside world. Along with alpha waves, they were the very first human brain rhythms recorded by the German psychiatrist Hans Berger in 1929. When you open your eyes from a relaxed daydream and start calculating a budget, debugging code or following a fast conversation, slower 10 Hz alpha waves give way to faster 14–22 Hz beta activity across your frontal and motor cortex.
Not all beta is the same: Low Beta (SMR), Mid Beta and High Beta
Because the beta band spans a wide 17-hertz range, neurofeedback clinicians and EEG researchers usually split it into three sub-bands that feel very different in everyday life:
| Beta Sub-Band | Frequency Range | Typical Waking State | How to Use It in mindspeace |
|---|---|---|---|
| Sensorimotor Rhythm (SMR) / Low Beta | 12 – 15 Hz | Calm, still physical posture with alert external attention ("quiet body, sharp mind") | Set beat to 14 Hz on a 200 Hz carrier; great when 10 Hz Alpha feels a bit too sleepy |
| Mid Beta | 15 – 20 Hz | Active analytical work: maths, coding, exam practice, structured writing | 18 Hz (this page's default) or the Deep Work Ramp session (10 → 14 → 18 → 40 Hz) |
| High Beta | 20 – 30 Hz | High arousal, deadline urgency, rapid task-switching—and in excess, rumination or jitteriness | Use sparingly for short 15–20 minute sprints; avoid if you already feel stressed or over-caffeinated |
When to pick Beta (18 Hz) vs. Alpha (10 Hz) vs. Gamma (40 Hz)
If you aren't sure which focus band fits the task in front of you, match the rhythm to your current energy level rather than the task label alone:
- Pick 10 Hz Alpha when you feel tense, scattered or over-stimulated. If you've had two coffees and ten browser tabs are competing for your attention, a faster beat adds fuel to the fire; a slower 10 Hz rhythm helps you settle down and read.
- Pick 14–18 Hz Beta when you feel sluggish or sleepy. During the 2 p.m. post-lunch dip, a slow alpha or theta beat can make your eyelids heavier. A crisp 18 Hz pulse—especially in isochronic mode—provides a brisk, upbeat tempo that cues alertness.
- Pick 40 Hz Gamma for short, high-effort bursts. Many users start in Alpha or Beta and let our 30-minute Deep Work Ramp session carry them up to 40 Hz once they are ten minutes into a problem.
Why this page starts in Isochronic mode at 18 Hz
In classic stereo binaural beats, the brainstem perceives the beat most clearly between about 2 Hz and 15 Hz. As the frequency difference climbs past 16–20 Hz, the two tones in your left and right ears start to sound like two slightly detuned pitches rather than a single clean pulse. Switching to Isochronic modulates the volume of a single 220 Hz carrier tone smoothly 18 times per second, so the rhythm stays crisp whether you are wearing headphones or listening through laptop speakers.
- Keep the pulse quiet (15–20% slider). Fast rhythms tire the ear if played loudly.
- Put a warm bed underneath. Layer Brown Noise at 40% or Rain at 35% so the 18 Hz pulse sits tucked inside a cozy backdrop.
- Stop at least two hours before bed. Beta frequencies are meant for daytime alertness; in the evening, switch to Alpha, Theta or plain pink noise.
Health note: Avoid rhythmic pulsing audio (particularly in the 13–30 Hz beta and 40 Hz gamma ranges) if you have epilepsy, a history of seizures or neurological sensitivity. If a fast beat ever makes you feel tense or restless, stop it immediately and switch to steady rain or brown noise.
Frequently asked questions
What are beta brainwaves good for?
Beta waves (13–30 Hz) are the natural EEG rhythm of wakeful alertness, logical problem solving and active concentration. People use low-to-mid beta audio (14–18 Hz) for daytime study sprints, coding and overcoming afternoon drowsiness.
Can beta binaural beats cause anxiety?
High-beta rhythms (22–30 Hz) or loud, fast pulsing tones can feel over-stimulating if you are already stressed or anxious. Stick to low or mid beta (14–18 Hz) at a very low volume, or switch to 10 Hz Alpha if you want a calmer feel.
What is SMR (12–15 Hz)?
SMR stands for Sensorimotor Rhythm, a band right at the border between Alpha and low Beta (roughly 12 to 15 Hz). In EEG research it is associated with calm physical stillness paired with alert mental focus.
Should I use binaural beats or isochronic tones for beta waves?
At 18 Hz and above, many listeners find isochronic tones clearer because the pulse is shaped directly into the sound wave, and they work on speakers as well as headphones. You can toggle between Binaural and Isochronic with one click in the Brainwaves panel.