FREQUENCY LIBRARY · 170+ PRESETS

Brainwave Frequencies The Complete Guide

Arkhitec's frequency library spans six audio delivery methods and five brainwave bands. 170+ presets, engineered with precise entrainment ramps and layered into a customizable soundscape you build yourself.

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Two axes

How audio becomes a brain state

Every Arkhitec frequency preset is defined by two choices: how the frequency is delivered (the audio category) and what brainwave band it targets (the mental state). Pick a combination that matches your goal — or layer several for a richer protocol.

Audio Categories · 5 Types

How the frequency is delivered

Each method has its own signature. Some need headphones, some don't. Some produce strong entrainment signals, others favor subtlety.

47 presets

Binaural Beats

Two slightly different tones, one per ear. The brain perceives the difference as a beat and gradually entrains to it. Requires headphones.

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70+ presets

Isochronic Tones

Single tones pulsed on and off at a precise rhythm. Work with or without headphones — the pulse itself is the entrainment signal.

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26 presets

Monaural Beats

Two tones combined into a single audible beat before reaching your ears. Work through speakers; no headphones required.

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27 presets

Solfeggio & Ancient

The nine classical solfeggio frequencies (174, 285, 396, 417, 528, 639, 741, 852, 963 Hz) plus ancient chamber resonances.

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Pure tones

Pure Frequencies

Single sine-wave carriers played at a precise frequency. The cleanest audio signal possible for entrainment and research.

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Brainwave Bands · 4 States

What mental state it targets

Each band is a frequency range that dominates during a specific mental state. The fifth band, gamma (30+ Hz), is included inside Arkhitec's focus and peak-performance presets.

0.5–4 Hz

Delta

Deep sleep, healing, restoration
4–8 Hz

Theta

Meditation, deep relaxation, subconscious work
8–13 Hz

Alpha

Calm focus, creative flow, mindfulness
13–30 Hz

Beta

Active concentration, deep work, problem-solving
Inside the Platform

How Arkhitec uses its frequency library

Other apps give you a list of Hz values. Arkhitec gives you a platform. Every frequency preset is built with a tested entrainment ramp — the carrier frequencies shift smoothly over time to lead your brain into the target state rather than shocking it with an abrupt pulse.

The 7-layer sound mixer lets you stack a frequency preset beneath rain, ocean, wind, or any soundscape you build. The Smart Mix Engine auto-balances levels so the entrainment signal stays audible without dominating the mix. Save any combination as a custom preset and recall it with one tap.

Audience-specific preset packs — for gamers, athletes, tech workers, students, wellness practitioners, and housework — combine the right frequency category, brainwave band, and soundscape for a specific real-world context. Pick your context, and the protocol is ready.

Frequently Asked Questions

The fundamentals of brainwave frequency audio — how it works, what to choose, and what to expect.

What are brainwave frequencies?
Brainwave frequencies are the rhythmic electrical patterns your brain produces, measured in hertz (Hz). Researchers group them into five bands — delta, theta, alpha, beta, and gamma — each associated with different mental states. Audio entrainment encourages your brain to produce more of a target frequency by playing sound at that frequency or in a pattern that reflects it.
What's the difference between binaural, isochronic, and monaural beats?
Binaural beats require headphones — they deliver a slightly different frequency to each ear, and your brain perceives the difference as a beat. Isochronic tones use a single tone pulsed on and off at a precise rhythm, working through speakers or headphones. Monaural beats combine two tones before they reach your ears, producing a single audible beat that also works through speakers.
Which frequency type is most effective?
Research suggests different delivery methods suit different goals and listeners. A 2009 study by David Siever found isochronic tones produced 50 dB modulation depth versus 3 dB for binaural beats — a dramatic difference in signal strength. But binaural beats are better researched for specific effects like anxiety reduction. The best approach is to try each type and notice which produces the clearest subjective effect for you.
Do I need headphones?
Only for binaural beats. Isochronic tones and monaural beats work through speakers because the entrainment pattern is already present in the audio signal. If you prefer to sleep without earbuds, Arkhitec's isochronic and monaural preset libraries are a natural fit.
Are these frequencies safe?
For most people, yes. Brainwave entrainment audio simply encourages your brain to produce patterns it naturally generates anyway. People with epilepsy or seizure disorders should consult a healthcare provider before using any entrainment audio. These tools are not a substitute for medical treatment.

170+ presets. One platform.

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