Delta28 minSpeakers or headphones

Calm session · Q07

Acoustic Calm Drift

Moves from Theta to Delta — 8 Hz easing to 2 Hz over 10 minutes.

Choose the full transition or begin at the advertised audio target. You can scrub and extend either path in the player.

Audio movement

Frequency journey

How the rhythmic pulse embedded in the sound changes from the opening moments to its destination.

Acoustic Calm Drift frequency journeyThe embedded pulse gradually slows from 8 Hz (Theta) to 2 Hz (Delta), so its rhythmic emphasis becomes less rapid over the ramp. The target begins at 10 min and then holds for 18 min. This is the modulation rate embedded in the audio, not an EEG reading.DeltaThetaAlpha951Target holdHzStartTarget · 10 minEnd · 28 min
Descending path

The embedded pulse gradually slows from 8 Hz (Theta) to 2 Hz (Delta), so its rhythmic emphasis becomes less rapid over the ramp. The authored target begins at 10 min and holds for 18 min.

Why this journey

A quieter listening context

For a calm routine, the signal is designed to feel less urgent and easier to let recede from attention.

How to use it

Give the transition room

Downshifting after a busy period, gentle breaks, and low-stimulation personal time. Start quietly and let the ramp unfold instead of judging the session in its first minute. The target then holds for 18 min by design. You can also start directly at the target, scrub the journey, or extend the hold in the player.

Signal, not a scan. The line shows the modulation rate generated in the audio. It is not an EEG reading and does not promise that brain activity will follow the curve. Listening responses vary.

Under the hood

Signal specification

Every audible behavior is published. The values below describe the sound engine—not a biological dose or guaranteed effect.

01

Journey

Beat start
8 Hz Theta
Beat target
2 Hz Delta
Ramp
10 min
Session length
28 minutes
02

Sound field

Carrier
230.5 Hz
Modulation
Monaural
Noise field
Sub Brownian
Spatial orbit
0.013 Hz one turn every 77s
03

Playback

Delivery
Monaural, Binaural or Poly-rhythmic
Listening setup
Speakers or headphones
Available in the player

Choose the spatial feel

This session starts in monaural mode. You can change how the beat is delivered without changing the frequency journey, or add a Shepard-Risset carrier drift for a continuously falling timbre.

Binaural— needs stereo headphones
Two carriers a few hertz apart, one per ear. The beat is constructed in your brainstem, so it needs stereo headphones to exist at all.
Poly-rhythmic— needs stereo headphones
Each ear gets its own carrier and its own beat, related by the golden ratio rather than driven in lockstep. Needs headphones — on a speaker the two channels sum and the distinction is lost.

New to these terms? Every row above, explained in plain language.

Design character

How this one is built

Native monaural at infra-low and delta rates, on low carriers with heavy brownian content. Built for a room rather than for headphones, and paced slowly enough that nothing in the field asks for attention.

Listen responsibly

Brainwavest is a wellness and relaxation tool, not a medical device. Session names and guidance describe design intent, not a promised physiological result. Binaural mode requires stereo headphones. Start quietly, and never use rhythmic audio while driving. Read the full safety notes.

Keep exploring

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