Resonance Studio

Evidence and references

Nothing on this site is a medical treatment, and no session is sold as one. This page is the other half of that promise: what is established about beats, resonances and paced breathing, what is contested, what is folklore, and what has been shown to be false. Every claim the studio’s own copy makes appears below with its status — and where a number could not be verified it is listed as unresolved rather than printed as fact.

The ledger holds 51 claims: 20 established · 8 mixed · 5 folk · 18 debunked. There are 40 references and 10 unresolved items.

How to read a status

Citations are written as author, title, outlet and year so they can be found by typing them into any search engine. This site carries no external links by design — nothing here phones out, and nothing here depends on a page elsewhere staying up.

The claim ledger

Established 20

ClaimStatusHonest phrasing the site uses
Two tones a few Hz apart produce a beat in the sound itselfestablished"Two steady tones close in pitch swell and fade at the difference between them — that is beating, and it is plain acoustics."
Binaural beats are heard only when each ear receives one toneestablished"The binaural beat is created where the two ears meet in the brain. It is not in the air, and it needs headphones."
Monaural and isochronic beats work on speakers, in mono, and on one earestablished"Monaural and isochronic pulses are real amplitude modulation — they survive a phone speaker, and they are the deeper stimulus."
Binaural beats need headphonesestablished"Use headphones, in full stereo. If the channels get mixed, the binaural beat becomes an ordinary beat."
The beat is computed in the brainstem (superior olive / inferior colliculus)established"The binaural beat is first computed in the brainstem, where the two ears' signals converge — with cortical involvement that research is still mapping."
The auditory steady-state / frequency-following response to beats is real and measurableestablished"The auditory system does follow the beat — this is measurable on EEG and is the basis of real clinical hearing tests."
Monroe's method is patented (US 3,884,218, 1975)established"Robert Monroe's 1975 US patent covers a method of inducing and maintaining sleep with rhythmic sound — it is a technique patent, not proof of the consciousness claims."
The Gateway programme has seven waves, I Discovery to VII Voyagerestablished"Waves I–VII run Discovery, Threshold, Freedom, Adventure, Exploring, Odyssey, Voyager; an eighth wave, Union, followed in 2022. The albums are meant to be used in sequence."
Gateway's tone architecture has been independently measuredestablished"Third parties spectrally analysed the recordings and published carrier[beat] sets — e.g. Focus 10 uses 1.5–4 Hz beats on 100–300 Hz carriers. The Institute itself never published per-level frequencies."
The Gateway programme is a headphone-based practiceestablished"Gateway and Hemi-Sync are headphone practices: the binaural component needs ear separation."
Schumann resonances are real electromagnetic resonances of the Earth–ionosphere cavityestablished"They are real, measured continuously, and used to track global lightning and the ionosphere."
The fundamental Schumann resonance is about 7.83 Hzestablished"About 7.83 Hz, with higher modes near 14, 21, 27 and 34 Hz — and the exact values shift with ionospheric conditions."
A = 440 Hz is the international standardestablished"Since ISO 16 in 1975, A4 = 440 Hz is the standard reference — a convention, not a natural law."
Breathing at ~0.1 Hz (6 breaths/min) maximises heart-rate oscillationsestablished"Around six breaths a minute, the cardiovascular system resonates — that is where heart-rate variability peaks for most adults."
The mechanism is baroreflex gain (blood-pressure feedback loop)established"Each breath nudges blood pressure; the baroreflex answers about ten seconds later. Match the breathing to that loop and the response reinforces itself."
Rosary and mantra recitation both land near six breaths a minuteestablished"A 2001 BMJ study found rosary and yoga mantra recitation both slow breathing to almost exactly six a minute — with higher HRV and baroreflex sensitivity during practice."
HRV biofeedback raises short-term HRV and baroreflex sensitivityestablished"Acutely, yes, reliably — measured within a single session."
Music listening reduces acute stressestablished"This is the best-evidenced tool on the site: slow, predictable music at a comfortable volume, listened to with attention, reduces acute stress measures."
Otoacoustic emissions exist and are used clinicallyestablished"The healthy ear emits sound — that is how newborn hearing screening works."
Combination/difference tones are real and audible on speakersestablished"Play two loud tones together and the ear generates extra tones of its own. Nothing mystical — and a good demonstration that hearing is not a microphone."

Mixed 8

ClaimStatusHonest phrasing the site uses
Binaural beats reliably entrain cortical brainwavesmixed"Some EEG studies find a shift toward the beat frequency, others find nothing; a 2023 systematic review found the literature inconsistent — 8 of 14 studies contradicted the entrainment hypothesis."
Binaural beats synchronise the two brain hemispheres ("hemispheric synchronisation")mixed"Only a narrow, local alpha-coherence effect between auditory areas has been shown — not whole-brain hemispheric synchrony."
The published Gateway frequency numbers are exactmixed"The measurements disagree between analysts, and the original equipment was analogue — treat published numbers as nominal, and the whole thing as one analyst's reading per level."
Small studies show physiological differences between 432 Hz and 440 Hz musicmixed"There are small crossover pilots; they are pilots. Any calm you feel is likely the music and the expectation."
HRV biofeedback treats anxiety, depression or hypertensionmixed"Meta-analyses find small-to-moderate effects with heterogeneous trials and no blinding. Promising adjunct; not a treatment, and not a replacement for care."
Vibroacoustic therapy is a real studied modalitymixed"Low-frequency sound applied to the body is studied — small trials show relaxation and short-term pain signals; the evidence base is weak and the results are not confirmed."
40 Hz stimulation is an Alzheimer's therapy todaymixed"Mouse studies were striking; human trials so far show entrainment without amyloid change, with open-label functional signals and a pivotal trial still completing. It is a clinical research programme, not a home remedy."
Sound therapy cures tinnitusmixed"A Cochrane review found only low-quality evidence for sound therapy. Keep volumes low; loud tones can worsen tinnitus."

Folk 5

ClaimStatusHonest phrasing the site uses
Focus levels 10/12/15/21/27 describe specific statesfolk"Focus 10, 12, 15, 21 and 27 are the tradition's own state names — best described as 'in this practice, Focus 10 means mind-awake/body-asleep', never as measured facts."
Audio tones at Schumann frequencies couple to the resonances or to your bodyfolk"There is no known mechanism linking an audio tone to an electromagnetic cavity mode, and no biological interaction at natural field strengths is established. The 7.83 Hz band is below hearing anyway."
174, 285 and 963 Hz belong to the original solfeggio scalefolk"The documented set was six tones (396–852 Hz). The three extra tones are later additions; we have found no primary source for them."
Planetary tones (136.1 Hz, 194.18 Hz…) mean somethingfolk"They come from Hans Cousto's Cosmic Octave (1978) — a composed, arithmetically checkable transposition of astronomical cycles into pitch. Lovely, and not a measurement of the body."
Chakra→frequency and 'angel frequency' mappingsfolk"These are contemporary syncretic lists that circulate without a primary source. We present them as practice, with their provenance."

Debunked 18

ClaimStatusHonest phrasing the site uses
Oster 1973 discovered binaural beatsdebunked"Dove described binaural beats in 1839; Oster's 1973 Scientific American article is what made them famous. Oster proposed them as a diagnostic tool, not as brainwave entrainment."
Oster 1973 proved that binaural beats entrain brainwavesdebunked"It didn't. Entrainment is a hypothesis proposed later, and it is still contested."
Louder or deeper beats produce stronger effectsdebunked"Binaural beat depth is small (on the order of 3 dB) and does not grow with volume. Louder only adds hearing risk."
The Monroe Institute's own studies establish its claimsdebunked"Its own published studies are small pilots: a 1998 vigilance test found acute task effects, and a 2007 pilot found no significant EEG change. The large structural claims remain unestablished."
The 1983 US Army Gateway assessment validates the programmedebunked"That document is a theoretical assessment written for military intelligence. It contains no experimental data on the programme."
The Schumann resonance is "the Earth's heartbeat" and is risingdebunked"It fluctuates slightly with solar and ionospheric conditions; there is no established upward trend, and no symptom list attached to it holds up."
Solfeggio frequencies are ancient, from Gregorian chantdebunked"They were published by Joseph Puleo with Leonard Horowitz in 1999, derived from verse numbers in the Book of Numbers. The 'lost chant syllables' story is not music history."
The solfeggio set can remove toxins / healdebunked"'No basis in science' is the careful verdict — an unsupported claim, not a modest one."
528 Hz repairs DNA / is the "love frequency"debunked"528 Hz is a pitch. The DNA-repair claim comes from a 1990s alternative-medicine book, not from a laboratory result."
432 Hz is the 'natural' tuning and 440 Hz is wrong/disharmoniousdebunked"Concert pitch has moved for centuries (415, 435, then 440). Both 432 and 440 are arbitrary references; the 'natural frequency' framing is a 20th-century campaign, adopted online."
Rife's frequency device cured cancer but was suppresseddebunked"The claims date to a 1987 book; the American Cancer Society judged them implausible, and Rife devices are unapproved by every health regulator."
Rife-type devices are legally sold as cancer treatmentsdebunked"Marketers have been convicted of felony health fraud (1996, 2002, 2009 among others), and no device is approved for treatment. Selling one as a cure is fraud."
Resonance frequency is the same for everyonedebunked"It is individual — usually about 4.5–6.5 breaths per minute — and it drifts between sessions. Offer a range."
Breathing at 0.1 Hz 'resets the vagus nerve'debunked"Say instead: paced breathing shifts autonomic balance and raises HRV. The 'reset' language is marketing."
Our 40 Hz preset is the Alzheimer's protocoldebunked"The trial device is flickering light plus clicks, calibrated and EEG-verified. A tone preset is not that device."
Loud headphone listening is safe if it 'feels good'debunked"Hearing damage is cumulative and permanent. 60% volume, 60 minutes (the 60/60 rule)."
Flashing/flicker content is risk-freedebunked"Photosensitive epilepsy is real. Flicker features need a warning and an off switch, and no flicker content for anyone with a seizure history."
Any of this is medical treatmentdebunked"Nothing on this site diagnoses, treats or prevents anything. It is audio for practice, curiosity and pleasure."

Reference list

Plain text, grouped as the research file groups it. In-house and non-peer-reviewed material is labelled as such rather than promoted.

Beats, physics and neuroscience

  1. Gerald Oster, "Auditory Beats in the Brain", Scientific American 229(4), 1973; binaural beats first described by H. W. Dove, Repertorium der Physik, 1839. [established]; with "Binaural Beats — What Are They?", Hearing Health Matters (Hearing International), 2015. [established as history/definition]
  2. Terence W. Picton, M. Sasha John, Andrew Dimitrijevic & David Purcell, "Human auditory steady-state responses", International Journal of Audiology 42(4), 2003; with O. G. Lins et al., "Auditory steady-state responses to tones amplitude-modulated at 80–110 Hz", Journal of the Acoustical Society of America, 1995. [established]
  3. Draganova / Ross et al., "Neuromagnetic responses to binaural beat in human cerebral cortex", Journal of Neurophysiology, 2006; with H. D. Orozco Perez, G. Dumas & A. Lehmann, "Binaural Beats through the Auditory Pathway: From Brainstem to Connectivity Patterns", eNeuro 7(2), 2020. [established]
  4. G. Bidelman & A. Krishnan, frequency-following response work (EEG/fMRI cortical correlates, FFR recording protocols), 2011–2017. [established]
  5. Ruth Maria Ingendoh, Elena Sophie Posny & Angela Heine, "Binaural beats to entrain the brain? A systematic review…", PLOS ONE 18(5):e0286023, 2023. [mixed]
  6. "Binaural Beat: A Failure to Enhance EEG Power and Emotional Arousal", Frontiers in Human Neuroscience, 2017; with Marco Solcà, Anaïs Mottaz & Adrian G. Guggisberg, "Binaural beats increase interhemispheric alpha-band coherence between auditory cortices", Hearing Research, 2016.; with "Effects of binaural and monaural beat stimulation on attention and EEG", Experimental Brain Research, 2021. [mixed]
  7. Jonas Chaieb, Nina Wilpert, Thomas Reber & Juergen Fell, "Auditory Beat Stimulation and its Effects on Cognition and Mood States", Frontiers in Psychiatry 6:70, 2015; with M. Garcia-Argibay, M. A. Santed & S. Reales, "Efficacy of binaural auditory beats in cognition, anxiety, and pain perception: a meta-analysis", Psychological Research, 2019. [mixed]
  8. Robert A. Monroe, "Method of inducing and maintaining various stages of sleep in the human being", United States Patent 3,884,218, filed 1970, granted 1975. [established]
  9. Robert Monroe, Journeys Out of the Body, Doubleday, 1971. [folk/historical]
  10. Monroe Institute / Hemi-Sync publications: "The Hemi-Sync Process" (research paper page, citing patents 3,884,218, 5,213,562, 5,356,368); "The History of Sound at the Monroe Institute"; "Hemi-Sync and Radiation Oncology: A Pilot Study", Hemi-Sync Journal XXVI(3–4), 2008. [established as to construction and institutional history; folk as to benefit claims; in-house, not peer-reviewed]
  11. J. D. Lane, S. J. Kasian, J. E. Owens & G. R. Marsh, "Binaural auditory beats affect vigilance performance and mood", Physiology & Behavior 63(2):249–252, 1998. [mixed]
  12. Helané Wahbeh, Carlo Calabrese & Heather Zwickey, "Binaural beat technology in humans: a pilot study…", Journal of Alternative and Complementary Medicine 13(2), 2007. [mixed]
  13. Wayne M. McDonnell, "Analysis and Assessment of Gateway Process", US Army Intelligence and Security Command, 1983. [debunked as validation]
  14. sbagen project documentation (`focus.txt`, `focus2.txt`, per-level presets), 1990s–2007, preserving the 1990s USENET measurement set (one analyst) and the BAVSA spectral analysis (durations, timings, levels). [established as measurement record]
  15. Takeshi Sone, FFT analysis of Gateway Experience CDs, posted to the sbagen-users list, 2007 (independent, and different from the USENET numbers). [established as measurement record]

Schumann resonances

  1. Winfried Otto Schumann, "Über die strahlungslosen Eigenschwingungen einer leitenden Kugel…", Zeitschrift für Naturforschung A 7(2), 1952. [established]
  2. Martin Balser & Charles A. Wagner, "Observations of Earth–ionosphere cavity resonances", Nature, 1960; and "On frequency variations of the Earth-ionosphere cavity modes", Journal of Geophysical Research, 1962. [established]
  3. B. P. Besser, "Synopsis of the historical development of Schumann resonances", Radio Science, 2007. [established]
  4. Schumann measurement studies: "Long-Term Observations of Schumann Resonances at Portishead (UK)", Atmosphere, 2022; "Impact of Solar Activity on Schumann Resonance: Model and Experiment", Atmosphere, 2025. [established]
  5. Ethan Siegel, "Schumann resonances: Amazing physics, sham medicine", Big Think, 2023. [established as critique]

Folk and historical frequency systems

  1. Leonard G. Horowitz & Joseph S. Puleo, Healing Codes for the Biological Apocalypse, Tetrahedron Publishing Group, 1999. [folk/historical]
  2. Science Feedback (Ian Le Guillou, ed.), "No evidence to support claim that Solfeggio frequencies remove toxins from the body", 2022. [debunked]
  3. A. J. Reisenweaver, "Guido of Arezzo and His Influence on Music Learning", Musical Offerings, 2012. [established as music history]
  4. Ruth E. Rosenberg, "Perfect Pitch: 432 Hz Music and the Promise of Frequency", Journal of Popular Music Studies 33(1):137, 2021. [established as scholarship]
  5. "Concert pitch" (history of A4, including the 1859 French diapason normal, the 1939 conference recommendation and ISO 16, 1975), Wikipedia, accessed 2026. [established]
  6. D. Calamassi & G. P. Pomponi, "Music tuned to 432 Hz versus music tuned to 440 Hz for improving sleep in patients with spinal cord injuries: a double-blind cross-over pilot study", Acta Biomedica, 2020. [mixed]
  7. Rife record: "Royal Rife" (court and press history: 1996 felony health-fraud conviction; Donald and Sharon Brandt; John Bryon Krueger, 2002; James Folsom, 2009), Wikipedia, accessed 2026; American Cancer Society, "Questionable Methods of Cancer Management: Electronic Devices", CA: A Cancer Journal for Clinicians, 1994. [debunked]
  8. Cancer FactFinder (Harvard T.H. Chan School of Public Health and partners), "Claim: Rife Machines Can Cure Cancer", 2022–2024. [debunked]
  9. Hans Cousto, The Cosmic Octave ("Die Kosmische Oktave"), 1978, and the planetary tuning-fork tradition derived from it. [folk]

Breathing, HRV and other modalities

  1. Paul M. Lehrer & Richard Gevirtz, "Heart rate variability biofeedback: how and why does it work?", Frontiers in Psychology, 2014; with E. G. Vaschillo et al., "Heart rate variability biofeedback as a method for assessing baroreflex function", Applied Psychophysiology and Biofeedback, 2002. [established]
  2. Luciano Bernardi, Peter Sleight, G. Bandinelli et al., "Effect of rosary prayer and yoga mantras on autonomic cardiovascular rhythms: comparative study", BMJ 323, 2001. [established]
  3. Fred Shaffer & Zachary M. Meehan, "A Practical Guide to Resonance Frequency Assessment for Heart Rate Variability Biofeedback", Frontiers in Neuroscience, 2020; with "Resonance frequency is not always stable over time…", Scientific Reports, 2021. [established]
  4. HRV biofeedback outcome syntheses: "A meta-analysis on heart rate variability biofeedback and depressive symptoms", Scientific Reports, 2021; "Efficacy and Methodology of Remote Heart Rate Variability Biofeedback Interventions for Mental Health", Applied Psychophysiology and Biofeedback, 2025. [mixed]
  5. Jiří Kantor et al., "Exploring vibroacoustic therapy in adults experiencing pain: a scoping review", BMJ Open 12(4):e046591, 2022; with "Music and low-frequency vibrations for the treatment of chronic musculoskeletal pain in elderly: a pilot study", PLOS ONE, 2021. [mixed]
  6. Martina de Witte, A. Spruit, S. van Hooren, X. Moonen & G.-J. Stams, "Music interventions for stress-related outcomes: a systematic review and two meta-analyses", Health Psychology Review, 2020; with Joke Bradt & Cheryl Dileo, "Music to reduce stress and anxiety for people with coronary heart disease", Cochrane Database of Systematic Reviews, 2013 (updates to 2020). [established for acute stress; mixed for clinical outcomes]
  7. GENUS mouse work: Hannah F. Iaccarino et al., "Gamma frequency entrainment attenuates amyloid load and modifies microglia", Nature 540, 2016; Anthony J. Martorell et al., "Multi-sensory Gamma Stimulation Ameliorates Alzheimer's-Associated Pathology and Improves Cognition", Cell, 2019. [established as animal studies]
  8. GENUS human work and trial tracking: Diane Chan et al., "Gamma frequency sensory stimulation in probable mild Alzheimer's dementia patients: results of a preliminary clinical trial", 2021; Alzforum, "Sensory Stimulation Systems" therapeutic profile and AD/PD 2024 conference coverage (Cognito Overture / HOPE). [mixed]
  9. GENUS counter-evidence: "Forty-hertz light stimulation does not entrain native gamma oscillations in Alzheimer's disease model mice", Nature Neuroscience, 2023; "Single-session gamma sensory stimulation entrains real-time EEG but does not enhance perception, attention, short-term memory, or long-term memory", 2025. [mixed]
  10. Ear-generated sound: David T. Kemp, "Stimulated acoustic emissions from within the human auditory system", Journal of the Acoustical Society of America, 1978, and "Otoacoustic emissions, their origin in cochlear function, and use", British Medical Bulletin 63, 2002; combination tones (Tartini tones, from Tartini c. 1750 onward), as summarised in standard psychoacoustics references. [established]
  11. Risks and cautions: Magdalena Sereda et al., "Sound therapy (using amplification devices and/or sound generators) for tinnitus", Cochrane Database of Systematic Reviews, 2018; World Health Organization, "Make Listening Safe" materials and World Report on Hearing, 2021; Mayo Clinic, "The 60-60 rule for safer listening", 2022; Epilepsy Foundation, "Shedding Light on Photosensitivity", accessed 2026; "Musicogenic seizures in temporal lobe epilepsy", Frontiers in Neurology, 2023. [established as caution; mixed as to sound therapy for tinnitus]

What could not be verified

These came up in the research and could not be confirmed. Where a claim is unresolved the site omits the number or carries the uncertainty — it does not guess.

  1. The exact upper carrier limit for binaural beats (1000 Hz vs 1500 Hz). Oster's article is reported as saying binaural beats are not heard above a carrier of about 1000 Hz, while Hemi-Sync's own process paper cites Oster for a ~1500 Hz limit. Blocker: the article copy available was a re-typeset rendering (an OCR/transcribed PDF) whose upper-limit sentence is truncated mid-line. Safe wording: "binaural beats are heard best with low carriers and become indistinct in the kilohertz range."
  2. The ~3 dB beat depth figure. Quoted from a circulated summary of Oster rather than from the article's own tables. It is consistent with everything else known about binaural beat depth (monaural beats are much deeper), but it should be re-checked against the original before printing a number.
  3. Perceptual adaptation — "the beat fades after N minutes." The ASSR literature documents habituation, and beat research repeatedly notes lability, but no specific peer-reviewed study quantifying the fade-out of the binaural beat percept was located. Blocker: no dedicated search of the psychoacoustic adaptation literature was possible within this pass. Do not print a number of minutes.
  4. The origin of the 174, 285 and 963 Hz additions to the solfeggio list. They circulate universally and are attributed to "later authors", but no primary source was found. State them as later additions with unknown provenance.
  5. 528 Hz study provenance. The frequently cited "528 Hz DNA" experiment is not in the peer-reviewed record; the trail runs into 1990s self-published material. Do not name a study or an author on the site beyond "a 1990s alternative-medicine book".
  6. The exact Schumann amplitudes (picotesla / microvolts-per-metre). The order of magnitude is well established; the single illustrative figure should be re-checked against a specific measurement paper before printing.
  7. Monroe Institute EEG work by Campbell/McDonnell (1970s). Described in the Institute's own accounts as thousands of monitored sessions, but never published in peer-reviewed form; the descriptions come from secondary and promotional sources.
  8. Full-stereo/lossy-encoding degradation of binaural beats. Sound engineering reasoning, and repeated in hobbyist documentation, but no controlled study was located.
  9. Cognito Therapeutics phase 3 (HOPE) results. The trial began enrolling in December 2022 and enrolment completed; no peer-reviewed pivotal readout was located in this pass. Anything the site says about 40 Hz therapy must be dated and flagged as "as of 2026".
  10. The original USENET measurement's author, group and date. All copies found are republishings; the measurement lineage for Focus 22–27 therefore has no citable primary author, only the sbagen documentation that preserves it.

Scope notes

Safety, in one place

This page is generated from the project’s research file by tools/resonance_evidence.py — the ledger, the references and the unresolved list are parsed from it, not retyped. Licence and provenance: credits. Back to the help index or the studio.