Pure Acoustical Signals

We produce Functional Acoustic Tools for the Brain. 

Pure Tone - Binaural Beats, Monaural Beats & BAS

The Chromasound Manifesto 

We build functional acoustic tools for the brain. Not music. Not atmosphere. Not comfort sounds dressed up as science.

Every frequency begins as visible light. A precise terahertz measurement, divided down exactly 40 octaves into the audible range. The result is not composed. It is calculated. Every tone has a origin, a wavelength, a mathematical reason to exist.

We follow the research. When the peer reviewed science says ambient layers eliminate the measurable entrainment effect, we remove the ambient layers. When it says lower carrier frequencies produce stronger EEG responses, we build our sessions around lower carriers. When it says longer exposure produces better outcomes, we produce 30 and 60 minute sessions.

Nothing here is added for comfort. Everything here is the signal.

Chromasound produces two types of functional acoustic tools. Binaural beats place two pure tones, one in each ear, allowing the brain to generate a precise internal frequency gap. 

Bilateral audio stimulation moves a pure tone from left ear to right ear and back, giving the brain an external rhythm to track.

Different mechanisms. The same precision. The same standard.

If binaural beats haven't worked for you, here's why. 

Most people try binaural beats once or twice, feel nothing, and conclude they don't work. That's a reasonable conclusion. But it's usually not the beats that failed.

The most common reason is simple. The signal never reached your brain. Most binaural beat audio layers the frequencies under ambient music or nature sounds. It sounds relaxing. But if you can't clearly hear both tones, your brain can't build the beat. The signal is blocked before it starts.

The second reason is consistency. Your brain needs time to follow a frequency. Five minutes isn't enough. Switching tracks isn't enough. The process requires patience and the right conditions.

Chromasound sessions are built around one principle. Remove everything that gets in the way of the signal. Pure tones. No masking. Full transparency about every frequency used. Nothing between the sound and your brain.

Want to understand the science first? 

No rush. The more you understand how binaural beats actually work, the better your results will be.

• What is a binaural beat and how does your brain build it?

• Why does the carrier frequency matter?

• What is Delta, Theta, Alpha and Beta?

• How do you choose the right session for your goal?

Explore the Session Guide to learn about each frequency range before you listen and then move onto the Signal Library.

Ready to find your Binaural signal?

Pure tones for sleep, focus, calm and meditation. No music. No noise. Just signal. 

Bilateral Audio Stimulation 

A different mechanism. The same precision.

Bilateral audio stimulation moves a pure tone from left ear to right ear and back in a continuous rhythmic sweep. 

The brain tracks the movement externally rather than generating an internal frequency gap. Developed for use in structured therapeutic settings, these sessions bring the same stimulus to daily use.

Two series available. 

Pure BAS for the clean unmasked signal. Cosmic Rain for the same stimulus paired with a soft natural layer.

Precision bilateral audio. Built for daily use.

Explore Bilateral Stimulation.

Ready to find your BAS Signal?

CITATION 

Ingendoh et al. 2023 · PLoS ONE · PMC10198548 

Mirmohamadi et al. 2024 · Basic & Clinical Neuroscience · PMC11367212