energies · XIX / XX · Sphere D · Depth & Integration · All 20
Five tools. Sound that works.
200 hertz in the left ear, 210 in the right. The difference sits in the alpha range. Five sound tools, generated right in the browser: no files, no tracking. And what only tradition claims gets called exactly that here.
Tool · Resonance Studio
Put on headphones. Binaural only works in stereo isolation.
Begin quietly and ease your way up to a comfortable volume.
Alpha · 10 Hz
Binaural Beat
200 Hz left, 210 right, difference 10 Hz in the alpha range. Meta-analysis 2019: a small but consistent effect on attention.
220 Hz + overtones
Singing bowl
A struck bowl with natural overtones, struck again and again. RCT 2017: significant for stress and mood.
528 Hz
Solfeggio · 528 Hz
Pure sine, set quiet by default. The DNA-repair claim is not peer-reviewed. What is established: calming sound calms.
C3 + G3
Om · Drone
Two sine tones (C3 and G3, a fifth) as a deep drone. Slows the breath. RCT 2019: shifts the HRV balance.
1/f spectrum
Pink Noise
1/f noise as a natural acoustic carpet. RCT 2017: helps with falling asleep and with focus.
With tinnitus or hearing sensitivity, test briefly and then decide. Not a substitute for therapy.
Sound experiment · educational offering · not therapy, no health claims
Resonance Studio · 5 tools
Alpha · 10 Hz
Binaural Beat
200 Hz left, 210 Hz right. Difference = 10 Hz, alpha range. Put on headphones. Meta-analysis (Garcia-Argibay 2019, 22 studies): small but consistent effect on attention.
3-10 Min · 📐
220 Hz + Harmonics
Singing bowl
Tibetan singing-bowl frequency with natural overtones. Goldsby 2017 (RCT, n=62): significant for stress & mood (d=0.6-0.8). Replicated 2023.
2-5 Min · 📐🌀
528 Hz
Solfeggio · 528 Hz
The most popular Solfeggio frequency. Claims about DNA repair are not peer-reviewed. What works: any calming music calms HRV. That is established.
5 Min · 🌀
C3 + G3
Om · Drone
Deep drone from two sine tones (C3 + G3 · perfect fifth). Slows breathing. Telles et al. 2019 (RCT): regular om-practice reduces HRV LF/HF ratio.
10+ Min · 📐🌀
1/f Spectrum
Pink Noise
1/f noise (natural acoustic carpet) helps with falling asleep and concentration. Suzuki 2017 (RCT, n=13): deeper sleep phases, improved memory consolidation.
unlimited · 📐
If you listen with headphones: keep the volume comfortable. If you have tinnitus or hearing sensitivity: test briefly and decide. These tools are not a substitute for therapy.
armarium instrumentorum · beyond the browser
Seven tools. A single mechanism.
What you hear above with the Web Audio API, humans have practised for millennia with physical sound. Each of these tools uncouples the body from the beta-waking mode and leads it into measurable HRV coherence.
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Tuning fork
furca tonalis · 1711, John Shore
Pure sine tone, felt in the body. Frequency therapy uses it at acupuncture points. Small but replicated.
Beaulieu 2010 2. ### Chladni plate
tabula vibrans · 1787
Sand on a vibrating plate forms geometric patterns per frequency. Makes visible that vibration is form.
Chladni · Hans Jenny 3. ### Headphones
cochlea isolata · stereo
Binaural hearing only works in stereo isolation. Over-ear > in-ear for binaural effects.
Lavallee 2011 4. ### HRV sensor
variatio cordis · objectiva
Heart rate variability, the objective measure of autonomic balance. Sound practice raises HRV coherence.
McCraty 2015 5. ### Pendulum
sympathia oscillans · 1665
Two pendulums of equal frequency synchronise via wall coupling. Huygens’ original finding.
Huygens 1665 6. ### Oscillator
fons sinūs · analog
Electronic oscillation source. Generates pure sine/square waves. The Web Audio original. Here digital, there analog.
Helmholtz · 1862 7. ### Brain-Cross
sectio cerebri · auditoria
Sagittal section through the cortex. Where sound first arrives: Brodmann 41/42, primary auditory cortex.
Brodmann 1909
- 1 · Not peer-reviewed: DNA repair at 528 Hz. Established: that calming music calms. The more boring claim wins more often than we would like.