Carrier-Only Brainwave Entrainment

Beyond Binaural Beats

This method uses pure carrier tones with volume shaping instead of binaural beats.
The brain responds directly to power fluctuations in sound, so amplitude modulation alone can drive entrainment.

No binaural illusion required

Short sessions (3–5 min) show clear EEG gamma rise (Muse S tests)

Works with headphones or speakers
Example Session: High-Gamma Boost (5 min)
Presets

carrier-low
tone 90 binaural 0 amplitude 1
tone 270 binaural 0 amplitude 2
tone 510 binaural 0 amplitude 3
tone 900 binaural 0 amplitude 5
tone 2400 binaural 0 amplitude 6

carrier-high
tone 90 binaural 0 amplitude 1
tone 270 binaural 0 amplitude 2
tone 510 binaural 0 amplitude 3
tone 900 binaural 0 amplitude 12
tone 2400 binaural 0 amplitude 14

00:00:00 silence
00:00:15 carrier-low
00:00:45 carrier-high
00:01:15 carrier-low
00:01:45 carrier-high
00:02:15 carrier-low
00:02:45 carrier-high
00:03:15 carrier-low
00:03:45 carrier-high
00:04:15 carrier-low
00:04:45 carrier-high
00:05:15 silence

Notes

Carriers map to brain rhythms:

90 Hz ≈ 1.5 Hz delta

270 Hz ≈ 4.5 Hz theta

510 Hz ≈ 8.5 Hz alpha

900 Hz ≈ 15 Hz beta

2400 Hz ≈ 40 Hz gamma

Only volume shaping (not frequency sweeps) is used.

Reported effects: clearer voice perception, sharper focus, quick gamma rise.