What is Brainwave Entrainment?
Brainwave entrainment is the process of guiding your brain towards specific frequencies through external stimuli — in ArgoBeat's case, audio.
Your brain naturally oscillates at different frequencies depending on your state:
0.5–4 Hz
Delta Deep sleep, healing, rest
4–8 Hz
Theta Meditation, REM sleep, creativity, introspection
8–14 Hz
Alpha Relaxed focus, calm alertness, light meditation
14–30 Hz
Beta Active thinking, problem-solving, concentration, engagement
30–100 Hz
Gamma Peak cognitive function, intense focus, insight
By listening to carefully tuned frequencies, your brain naturally synchronizes (entrains) to match them. Research shows this improves focus, reduces anxiety, aids sleep, and enhances creativity.
Binaural Beats vs. Isochronic Tones
| Feature | Binaural Beats | Isochronic Tones |
| How it works | Two slightly different frequencies in each ear create a phantom beat frequency | Single tone pulses on and off at target frequency |
| Headphones | Required (must separate L/R channels) | Optional (works on speakers) |
| Sensation | Subtle, gentle, subliminal | More noticeable, more compelling |
| Research | Well-studied, widely documented | Emerging, newer research base |
| Best for | Meditation, sleep, subtle entrainment | Focus, engagement, active sessions |
ArgoBeat supports both methods and allows you to switch between them during a session.
How ArgoBeat Generates Audio
Binaural Oscillators (L+R)
→
Channel Merger
→
Master Gain
Isochronic Oscillator
→
AM Modulation
→
Compressor
Noise Generator
→
Filters + Reverb
→
Speakers
Everything runs in your browser's Web Audio API. Each audio source is a network of OscillatorNodes, GainNodes, BiquadFilterNodes, and AudioWorkletNodes connected in real time. No audio files are ever downloaded.
Research & Citations
Key Studies
- Wahbeh, H., Calabrese, C., & Zwickey, H. (2007) "Binaural beat technology in humans: a pilot study to assess psychologic and physiologic effects." Journal of Alternative and Complementary Medicine, 13(1), 25-32.
- Jirakittayakorn, N., & Wongsawat, Y. (2017) "Brain responses to a 6-Hz binaural beat: effects on general theta rhythm and frontal midline theta activity." Frontiers in Neuroscience, 11, 365.
- Becher, A. K., et al. (2015) "Intracranial electroencephalography power and phase synchronization changes during monaural and binaural beat stimulation." European Journal of Neuroscience, 41(2), 254-263.
- 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.
- 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.
ArgoBeat's frequencies were selected based on peer-reviewed research documenting their effects on EEG activity, subjective well-being, and cognitive performance.
Frequency Selection Rationale
| Mode | Band | Beat Freq | Carrier | Rationale |
| Focus | Alpha | 10 Hz | 200 Hz | Peak alpha for calm, sustained attention (Klimesch, 1999) |
| Work | Beta | 14 Hz | 220 Hz | Low beta for alert, productive cognition |
| Deep Work | Beta | 18 Hz | 200 Hz | Mid-beta for intense, sustained concentration |
| Sleep | Delta | 2.5 Hz | 100 Hz | Deep delta for NREM sleep onset (Jirakittayakorn, 2017) |
| Relax | Alpha | 8 Hz | 180 Hz | Low alpha for relaxation without drowsiness |
| Meditate | Theta | 6 Hz | 160 Hz | Frontal midline theta for meditation (Jirakittayakorn, 2017) |
| Creative | Theta | 7 Hz | 170 Hz | High theta for divergent thinking (Razumnikova, 2007) |
| Play | Alpha | 12 Hz | 210 Hz | Alpha-beta crossover for engaged, playful states |
Carrier frequencies are in the 100–220 Hz range for optimal beat perception (Licklider et al., 1950). Frequencies below 100 Hz are too low for comfortable listening; above 500 Hz, binaural beat perception degrades.
Why ArgoBeat is Free
Unlike services that use server-side synthesis or stream pre-rendered audio (which cost money to compute and serve), ArgoBeat generates everything directly in your browser using the Web Audio API.
$0
Audio file bandwidth
Zero files to serve — all synthesis happens on your device
$0
Server compute
No backend processing — pure client-side Web Audio API
$0
Databases or accounts
No sign-up, no tracking, no infrastructure cost
∞
Scalability
Unlimited users with zero incremental cost
ArgoBeat is hosted on Cloudflare Pages (free tier, unlimited requests). We can afford to offer it free forever because it costs us nothing to run.
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No signup. No email. No tracking. Just pure brainwave entrainment, on-the-fly.
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