You're not crazy.
The science is real. The harm is measurable. The path forward exists.
Twenty-three million U.S. apartment units share walls, floors, or ceilings with neighbors. Forty-four million people live in those buildings. New York City alone logged 738,816 noise complaints in 2024 — an average of more than two thousand per day, up nineteen percent from the year before (NYC OpenData 311 Service Requests).
Meanwhile, the consumer subwoofer market has more than doubled since 2010. Home theater systems capable of producing acoustic pressure below 20 Hz — frequencies the human ear cannot consciously detect, but the body still responds to — are now affordable, widespread, and completely unregulated.
The science is only now catching up. The landmark study confirming that inaudible 18 Hz infrasound elevates cortisol and impairs mental health in humans was published in April 2026. The brain-structure study documenting grey matter changes from 28 nights of low-level exposure was published in 2021. The cardiac contractility study showing direct damage to human heart tissue was published the same year.
In other words: more powerful equipment is being deployed in more shared-wall residences than at any point in history, and the regulatory framework hasn't been updated since before any of this technology existed.
The body of evidence proving that residential infrasound exposure causes measurable harm at non-extreme levels is, in a practical sense, brand new. Most people experiencing it don't know it has a name.
There is a reason residential infrasound harassment is so rarely diagnosed, rarely prosecuted, and rarely even named. It sits inside a structural blind spot that almost every system — medical, legal, regulatory, social — is designed not to see.
Understanding why is the first step toward changing it.
There is no audible sound. No visible device. No physical evidence at the scene. A subwoofer sitting in a living room is consumer electronics, not a weapon.
"I was just watching a movie." "My subwoofer was on low." "I didn't know it was bothering anyone." The same equipment configuration that produces documented physiological harm also produces complete plausible deniability.
No police department, code enforcement office, or landlord carries equipment that measures below 20 Hz. The harm occurs in a frequency range that enforcement literally cannot detect with standard tools.
The action is silent and invisible. The response — agitation, sleep deprivation, complaints about something nobody else can perceive — is the only thing anyone can see. To outside observers, the affected person appears to be the problem.
Anxiety, insomnia, irritability, complaints about things others cannot perceive. This reads like a textbook anxiety or paranoid presentation. A clinician unfamiliar with environmental infrasound may inadvertently diagnose a psychiatric condition caused by a physical exposure.
There is no specific statute, no measurement standard to apply, no precedent to cite, and no affordable path to admissible evidence. The harm exists. The mechanism to address it does not.
Sound pressure waves below 20 Hz. Inaudible to most humans at moderate intensities but capable of producing vibrotactile sensations and physiological responses at high sound pressure levels (typically >100–110 dB).
Primary sensor: The inner ear (cochlea). Whole-body vibration can occur at extreme levels.
Wind turbines, HVAC systems, industrial machinery, and heavy transport generate low-frequency noise and infrasound. At residential distances these levels are typically well below 90 dB.
Multiple double-blind, sham-controlled studies find no consistent physiological or cognitive effects at real-world environmental exposure levels.
At very high intensities (typically >110 dB), infrasound can produce measurable physiological responses including body vibration, pressure sensations, and temporary changes in balance or discomfort.
These levels are rarely encountered outside laboratory, military, or industrial test environments.
The intensity of exposure is critical. Most community complaints involve levels far below those shown to produce measurable physiological effects in laboratory settings.
Peer-reviewed studies, standards, and technical references on low-frequency sound and infrasound.
Key ranges, effects, propagation, and detection tools (recreated from technical reference materials in the collection).
| Frequency | Audible? | Common Sources | Known/Reported Effects | Travel / Wall | Detection | Capable Speakers |
|---|---|---|---|---|---|---|
| 0.1–0.5 Hz | No | Ocean waves, seismic | Motion sickness (very high intensity) | Global / Yes | Research microbarometers | Military / purpose-built only |
| 0.5–1 Hz | No | Seismic, distant traffic, gravity waves | Unease, headache at extreme levels | 100s–1000s km / Yes | MOHO-AIR | Rotary subwoofer only |
| 1–4 Hz | No | Wind turbines, large HVAC, explosions | Anxiety, chest pressure, vestibular | 100s km / Yes | MOHO-AIR | Rotary / large servo subs |
| 4–10 Hz | No | Industrial, Theta brainwave range | Lethargy, cardiac effects, panic at high SPL | 10s–100s km / Yes | MOHO-AIR, ISO 7196 | High-end pro-audio infrasound subs |
| 10–20 Hz | Borderline | "Fear frequency" ~19 Hz, subwoofers | Pressure, tinnitus, visual disturbance, body vibration | Km-scale / Yes | MOHO-AIR, some apps | High-end consumer + pro infrasound subs |
| Frequency | Audible? | Common Sources | Known/Reported Effects | Travel / Wall | Detection | Capable Speakers |
|---|---|---|---|---|---|---|
| 20–30 Hz | Marginal | Subwoofers (primary complaint range) | Deep vibration, ear ringing, abdominal resonance | Good / Moderate | NSRTW_mk4, apps | Most consumer subwoofers |
| 30–50 Hz | Faint to audible | Subwoofers (most common complaint band) | Ear ringing, limb tingling, sleep disruption, irritability | Moderate / Good | Standard meters + apps | Virtually all consumer subwoofers |
| 50–70 Hz | Audible hum | Mains hum, HVAC, subwoofer crossover | Fatigue, concentration issues, persistent drone | Moderate | Class 2 SPL meters | All subwoofers + many full-range speakers |
Full detailed table with speaker examples and more ranges available in frequency_effects_reference_generic.pdf in the materials folder.
The studies below are the foundation of every claim on this page. They are not exhaustive — they are the strongest, most-cited, and most recent.
If residential infrasound exposure causes documented harm — and the peer-reviewed evidence increasingly shows it does — why hasn't a market, a regulator, or a profession addressed it?
The answer is that this problem sits in a structural no-man's-land between disciplines, and every stakeholder has a reason not to engage.
Reliable detection of residential infrasound requires specialized equipment. Consumer sound level meters and phone apps are generally inadequate below ~20–30 Hz.
The QuakeLogic AIR is one of the more accessible high-precision infrasound monitors designed for both home and research use. It features a 24-bit data processor, high-sensitivity differential pressure sensor, real-time waveform viewing, and 24-hour automated plotting.
Most “infrasound detectors” sold online and typical A-weighted meters do not accurately capture true infrasound. Proper measurement requires:
Standard dBA meters are structurally blind below 20 Hz. Professional or research-grade equipment is required for credible documentation.
The peer-reviewed studies cited on this site demonstrate biological plausibility and measurable physiological responses to infrasound and low-frequency noise at certain exposure levels. However, they do not prove that the levels typically present in residential neighbor-noise disputes are causing the full range of symptoms reported by some complainants.
This site presents the strongest available evidence while being transparent about its boundaries. Overstating the current science harms credibility with the very professionals (doctors, lawyers, law enforcement, regulators) whose help is needed.
Mass Loaded Vinyl is one of the more practical materials for reducing low-frequency sound transmission when installed correctly as part of a mass-air-mass system.
Correct Installation Principles:
Important: MLV helps with low-frequency noise but has limited effectiveness against very deep infrasound (<10–15 Hz) that travels primarily through the building structure rather than air. Complete isolation at true infrasound frequencies is extremely difficult in typical residential construction.
Additional practical steps discussed in the repository include source isolation (where possible), room layout adjustments to reduce resonance, and sealing major air leaks. Always combine multiple approaches and measure before/after when feasible.
Reliable detection requires proper equipment and methodology. Consumer “ghost hunting” or “EMF meter” devices sold for harassment detection are almost universally inadequate for the claimed phenomena.
Requires precision low-frequency microphones with flat response to at least 5–10 Hz, proper calibration, and software supporting Z- or G-weighting. Smartphone apps and consumer “infrasound detectors” cannot accurately measure true infrasound. Professional-grade systems are expensive.
Standard A-weighted sound level meters heavily underestimate low-frequency and infrasonic energy. Proper assessment often requires 1/3-octave band analysis down to low frequencies and long-term logging to capture fluctuating sources.
Tinnitus, vestibular disorders, sleep apnea, migraine variants, and functional neurological symptoms can produce very real distress. When measurements show no unusual acoustic energy, medical and psychological evaluation is the recommended path rather than assuming exotic external causes.
Curated equipment, materials, and services for detection, mitigation, documentation, health support, legal/tactical work, and relocation.
FTC Disclosure: Some links below are affiliate links. The site may earn a commission on qualifying purchases at no additional cost to the reader. This does not influence which products are recommended or included. All recommendations are based on reported utility for residential low-frequency situations.
Purpose-built infrasound monitor with cloud connectivity. ~$1,500+
Best current consumer option for true sub-20 Hz monitoring.
Community-grade infrasound monitor. ~$390
0.05–20 Hz range. Not standalone for court-admissible work.
Wireless Type 1 sound level meter / data logger. ~$800+
Excellent for 20 Hz+ logging. Limited below 20 Hz.
Calibrated USB measurement microphone. ~$80
Best low-cost way to fill the 20 Hz – NSRTW gap. Use with REW software.
Type 1 reference measurement mic. ~$600+
Free, powerful spectrum analysis software.
Free audio editor for manual recording and analysis.
Phone spectrum analyzers. Free–low cost.
Triage only. Phone mics roll off below ~50 Hz. Not court-admissible.
DIY structure-borne vibration logging. ~$18
Entry-level calibration source. ~$150
Speaker/equipment isolation platform. ~$80
One of the highest-value items under $100 for structure-borne decoupling.
Professional-grade structural decoupling.
Inexpensive appliance/equipment isolation.
DIY vibration damping material in various thicknesses.
Active sound-masking sleep earbuds. ~$300+
Best-value sleep earbuds with masking. ~$120
Non-looping white/fan noise machine. ~$50
Mechanical fan noise machine (original since 1962). ~$45
Uniform attenuation earplugs. ~$25
Limitation: Does not block structure-borne bone conduction (dominant LFN path).
High-fidelity hearing protection. ~$20
Same limitation as above — air conduction only.
Adds mass for airborne LF reduction. ~$2–4/sq ft
Essential for sealing MLV installations.
The only construction method that meaningfully helps with low-frequency transmission.
Symptom and mood tracking app. Free + premium.
Symptom + medication tracker.
Portable audio recorder. ~$120
Indoor pan/tilt camera with local storage. ~$60
Mobile document scanning with OCR (free tiers available).
Unlimited backup with version history. ~$7/mo
Versioning is critical for evidentiary integrity.
Sleep, HRV, temperature tracking. ~$300+ + subscription
HRV / recovery strap. Subscription model.
Passive Apple Watch sleep tracking.
Well-reviewed air purifier. ~$200
At-home salivary cortisol testing.
Useful objective correlate to exposure timing (see Scatterty 2026).
Standard method for formal, documented notice to landlords or code enforcement.
End-to-end encrypted email.
Encrypted note-taking.
Privacy-focused VPN (no email required).
Flexible furnished monthly rentals.
Short-to-medium term stays.
Direct landlord 30+ day furnished listings.
Portable container moving & storage.
Peer-to-peer car rental.
Prices are approximate as of 2026 and shown for planning purposes only. Always verify current pricing and specifications directly with the manufacturer or retailer.
NYC alone logged 738,816 noise complaints via 311 in 2024 — an average of 2,000+ per day, up 19% from 2023. Residential noise accounted for roughly half. [NYC OpenData 311]
61% of apartment dwellers said they'd be more likely to move because of a bad neighbor.
Over half of Americans are annoyed by their neighbors, with noise consistently cited as the top complaint.
A nationwide survey of 5,510 adults found that 45% of neighbors are loudest in the evening and 24.6% are loudest in the middle of the night. About 46% of respondents had never contacted their landlord about noise.
Noise ranks among the top tenant complaints across all multifamily housing. Loud music, bass vibrations from modern speaker systems, stomping, barking dogs, and parties are the most cited.
“Body vibration from neighbor's subwoofer set to frequencies they cannot hear... inner ear dysfunction aggravated by low-frequency hum... retaliatory infrasound after filing noise complaints.”
“A subwoofer playing 80 dB at sub-20 Hz frequencies may pressurize a neighbor's apartment more than the source apartment depending on building construction.”
“Two neighbors playing sub-bass / infrasound at all hours... described as using it as ‘a weapon’ causing eardrum pain. The sound penetrated the entire house and affected household pets.”
“A Florida woman whose neighbor subjected her to infrasonic harassment using daisy-chained speakers held to the floor, operated via smartphone.”
“A user reports 5 years of nightly infrasonic noise from a neighbor, with documented frequency spectrum analysis provided to police daily over weeks/months. Equipment costs for court-admissible measurement cited at approximately £6,000.”
“My whole body is vibrating and my chest is tight. Vibrations travel up and into your body… makes my skin crawl. Heart palpitations, muscle twitching, nausea, and extreme sleep deprivation. It follows me around the apartment and stops when I leave.”
“My body tremble, heart skip, jaws clenched… body shake like a tuning fork. Full-body vibration and twitching that follows me room to room. Noise-cancelling headphones don’t block it. Symptoms stop when I leave the apartment.”
“Intense tingling and pressure on my forehead, scalp, feet, ear pressure, muscle spasms, eye twitches, leg cramps, feeling of intense cold. Phyphox app shows a constant 50 Hz spike plus heavy low-frequency waves. It’s an airborne pressure wave.”
A catalog of publicly-posted accounts found on Reddit, Quora, legal Q&A sites, audio forums, and in the news. Filter by what each account is about. Forum and Q&A posts are anecdotal and unverified; items marked news report are from published journalism. We exclude accounts framed as "targeted individual," "gang-stalking," or "directed-energy weapon" claims — see What This Is — and Isn't.
It is worth stating plainly how low the barrier is — not to instruct, but to explain why systemic solutions are urgent.
No specialized knowledge is required. No restricted purchase. No technical expertise beyond plugging in a consumer device and adjusting a setting. A person can cause documented physiological harm to their neighbor — elevated cortisol, sleep disruption, vestibular damage, cardiac effects, measurable changes in brain structure — using equipment purchased legally at any electronics retailer, operated from their own living room, with no evidence visible to anyone else.
The equipment is marketed for entertainment. It is not regulated. It carries no warning labels about infrasonic output. It requires no license to operate. The person using it may not even understand the physics — they may simply have learned that turning up the bass annoys the neighbor.
In cases where the conduct is deliberate, the abuser enjoys every structural advantage: complete deniability, zero risk of detection by standard enforcement, and a social dynamic in which the affected person's response makes them appear to be the aggressor.
This is why the solution cannot rest at the individual level. It requires measurement standards that can detect it, building codes that can prevent it, and laws that can punish it.
Nearly every noise-related homicide follows the same arc:
The critical failure point is steps 4–6: the absence of a legitimate resolution pathway.
These are documented homicides arising from neighbor noise disputes. They illustrate the extreme end of unresolved conflict.
These cases illustrate how unresolved low-frequency and neighbor noise disputes can escalate when formal channels fail. A peer-reviewed study in the Journal of Public Economics (Hener, 2022) found that a 4.1 dB increase in average noise levels produces a 6.6% increase in the violent crime rate. DOI: 10.1016/j.jpubeco.2022.104748. Sources are contemporary news reporting and public records.
The following accounts are self-reported or from unverified sources. They are included for context only and should not be treated as documented evidence. Many describe experiences that may have other explanations (including medical or psychological conditions). These have been separated from verified homicide cases.
These reports are separated from the documented homicide cases above to avoid conflating verified incidents with unverified personal accounts. Linking to unverified forums can damage credibility with professionals.
Residential low-frequency noise and infrasound exposure is repeatedly conflated with two other phenomena: gangstalking (the "targeted individual" belief system) and Havana syndrome (anomalous health incidents reported by U.S. personnel abroad). The three are surface-similar — an unseen source, physical symptoms, the experience of not being believed — but they are not the same kind of claim, do not rest on the same evidence, and are not advanced by the same communities. Treating them as parallel hurts the case for residential exposure because it imports the credibility problems of the other two into a category that has independent acoustic and biological grounding.
This section exists to separate them, not to validate any of them as a unified phenomenon.
| Category | Proposed mechanism | Physics plausibility | Evidence status | Why conflation hurts the case |
|---|---|---|---|---|
| Gangstalking "Targeted Individual" framework | Coordinated harassment by large, distributed groups of strangers, often involving claims of voice-to-skull (V2K) technology, directed energy weapons, and synchronized civilian networks. | Not established No replicable physical mechanism. Cited technologies (V2K, civilian-deployed DEWs) do not exist as described in the open literature at the claimed scale or capability. | No supporting peer-reviewed evidence The psychiatric literature characterizes group-stalking complaints as a persecutory belief system. Sheridan & James (2015) found all 128 self-reported "gangstalking" cases met criteria consistent with delusional disorder; Lustig et al. (2021) analyzed it as a novel persecutory belief system propagated through online communities.1 | Adopting "TI" terminology, framing the source as an organized network rather than an identified neighbor, or invoking V2K / DEW language is the fastest way to have a legitimate residential exposure case reclassified as a psychiatric presentation by responding officers, physicians, and judges. |
| Havana Syndrome "Anomalous Health Incidents" (AHIs) | Originally hypothesized as directed acoustic or pulsed-electromagnetic attack against U.S. personnel abroad. Symptoms include head pressure, tinnitus, vertigo, cognitive effects. | Contested A directed electromagnetic mechanism remains technically possible but has not been demonstrated. A standoff acoustic mechanism producing the reported effects at distance is not supported by acoustic physics. | Officially unresolved; leading explanation is non-adversarial The 2023 U.S. Intelligence Community Assessment, reaffirmed in the 2024 Annual Threat Assessment, concluded it is "very unlikely" a foreign adversary is responsible. NIH studies published in March 2024 found no MRI-detectable brain injury versus controls. Mass sociogenic illness is the leading non-adversarial explanation in the scientific literature, though political contestation continues.2 | Havana framing imports a "weapon at distance" model that does not apply to a residential neighbor with consumer audio equipment, and inherits the unresolved-mystery overhang that makes officials reluctant to engage. The residential case is the opposite: identifiable source, identifiable equipment, identifiable physics. |
| Residential Low-Frequency Noise & Infrasound The subject of this site | Acoustic pressure below ~200 Hz (with particular relevance below 20 Hz) produced by consumer subwoofers, bass shakers, or similar equipment in adjacent units, transmitted through shared structural surfaces. | Established Long wavelengths (17 m at 20 Hz, 34 m at 10 Hz) pass through residential wall construction with minimal attenuation. Equipment capable of producing the relevant output is consumer-available and widely owned. Mechanism is conventional acoustics. | Peer-reviewed evidence base Cortisol elevation from sub-perceptual 18 Hz exposure (Scatterty et al., 2026). Grey matter changes from 28-night residential 6 Hz exposure at 80–90 dB (Ascone et al., 2021). Reduced cardiac contractility at high-level exposure (Chaban et al., 2021, with rebuttals noting effective levels were high). Outer hair cells respond below the hearing threshold (Salt & Hullar, 2010). Systematic review of self-reported symptoms in exposed populations (Baliatsas et al., 2016).3 | Not applicable — this is the category the other two get conflated with. The strategic risk runs the other direction: importing TI or Havana terminology into a residential case destroys its credibility. |
A complaint that is location-dependent (symptoms resolve away from the residence and return on return), source-attributable (a specific identifiable neighbor or unit), and equipment-plausible (capable consumer equipment present or inferable) sits in the third row, not the first two. That distinction — and the discipline to maintain it in language, documentation, and legal filings — is the single largest predictor of whether the complaint will be treated as legitimate by responding officers, clinicians, attorneys, and judges.
References
Selected guidelines, standards, measurement protocols, and key reference documents focused on infrasound and low-frequency noise.
Comprehensive guidance on environmental noise, including recommendations relevant to low-frequency sources.
International standard defining G-weighting for infrasound measurement and assessment.
Foundational review by Leventhall et al. covering perception, measurement, and effects of infrasound.
Professional documentation for the QuakeLogic AIR high-precision infrasound monitoring system (24-bit, high-sensitivity sensor, suitable for residential and research use). Includes user manual and technical datasheet.
Two-column printable glossary covering acoustic, physiological, measurement, community, and tactical terminology. For use in clinical or legal consultations.
Precise language matters. Scientific terms are drawn from peer-reviewed acoustics and medical literature. Community-derived terms are labeled as such. The final group covers terminology this site deliberately distinguishes itself from.
A structured, evidence-preserving approach if you suspect you are experiencing low-frequency noise harassment.
There is no feedback loop for the harasser. Their action is invisible; your visible reaction is the only reward. The goal is to separate your emotional response from your evidentiary response. Feel the anger privately. Document clinically. Do not give them the reaction they want.
Leave your home for 2–3 nights. Keep a detailed symptom log (sleep quality, headache, nausea, pressure, anxiety — rated 1–10). Return and compare. A clear, repeatable difference is powerful circumstantial evidence.
Start with smartphone accelerometer apps (not microphone-based). Use contact sensors or the Raspberry Boom for better data. Maintain a daily clinical log with timestamps. For court-admissible evidence, hire a certified acoustician with calibrated microbarometers.
Compile a timeline correlating symptoms with measurement data and neighbor activity. Get medical documentation of symptoms (do not lead with “my neighbor is attacking me”). Research your local noise ordinance, lease, and habitability laws. Consult a tenant rights or nuisance attorney before filing complaints.
Contact your landlord in writing with your documented evidence. Ask building staff to witness an episode. File repeated 311/noise complaints to create an official record. If the landlord fails to act, you may have grounds for habitability claims or lease termination.
Sleep in the room farthest from the suspected source. Use vibration-isolating pads under bed legs. Spend time away from the apartment when possible. Monitor your mental health and consider professional support — this is environmental trauma, not weakness.
A structured symptom-logging and evidence tool is in development. DOWNLOAD THE APP for early access and updates.
You're not crazy. Compiled from peer-reviewed sources and documented case analyses. All answers include direct research citations and links. Use the filters to browse by topic.
This is the most important question on this page, and it deserves a direct answer.
Controlled laboratory studies at moderate residential levels (80–90 dB at 6 Hz, 28 nights) found measurable changes in brain grey matter but no consistent symptom production (Ascone et al., 2021). Cardiac effects in vitro required levels well above 100 dB at 16 Hz (Chaban et al., 2021). At first glance, this seems to suggest consumer-level exposure should be harmless.
But the controlled-laboratory levels are not what residents actually experience. Several factors push real-world residential exposure above the lab values:
The honest answer: a subwoofer used at moderate volume by a neighbor who keeps it well away from shared walls is generally harmless. The same subwoofer placed against a shared wall or floor, played continuously for hours, in a room geometry that amplifies its output, produces a different exposure profile entirely. The equipment is consumer-legal. The deployment is what matters.
Sources: Ascone et al. (2021), Scientific Reports; Scatterty et al. (2026), Frontiers in Behavioral Neuroscience.
No. This site exists in part because that community's framing has actively damaged the credibility of legitimate residential low-frequency exposure cases.
The distinction matters enough to draw it explicitly. Residential infrasound exposure is the focus of this site: an identifiable acoustic source (typically a neighbor's consumer audio equipment), an identifiable physics mechanism (long-wavelength acoustic transmission through shared structure), and a documented peer-reviewed evidence base (Ascone, Scatterty, Salt & Hullar, Baliatsas, et al.). Gangstalking, as the term is used in the "targeted individuals" community, refers to a different set of claims: coordinated harassment by distributed groups of strangers, voice-to-skull (V2K) technology, civilian-deployed directed energy weapons. Those claims do not have a validated physical mechanism and are characterized in the psychiatric literature (Sheridan & James, 2015; Lustig et al., 2021) as a persecutory belief system rather than an established phenomenon.
Conflating the two categories is the fastest way to have a legitimate residential acoustic case dismissed by officers, clinicians, attorneys, and judges. Maintaining the distinction — in language, in documentation, in legal filings — is the single largest predictor of whether a complaint is treated seriously.
For a detailed side-by-side, see the What this is — and what it isn't section.
The differentiators are pattern and correlation, not loudness:
The single most useful step is a location-dependence test: leave the residence for 3 nights and log symptoms. Environmental sources (HVAC, transformer, traffic, wind) do not follow you; a neighbor source resolves the moment you are out of the building. See the Tactical Plan of Action for the full protocol.
Because of the physics of long wavelengths. At 20 Hz, the wavelength is roughly 17 meters; at 10 Hz, 34 meters. These wavelengths are larger than the rooms they propagate through, which means:
The practical implication: the inability to point at the source by ear is not evidence the source is imaginary. It is a predictable acoustic phenomenon. See Leventhall (2004), Low frequency noise and annoyance, in Noise & Health: PMID 15273024.
The underlying acoustics are the same: low-frequency energy travels long distances, passes through walls, and produces a documented annoyance and (in some studies) physiological response in exposed populations. The exposure profile, evidence base, and recourse path are different.
The mechanisms overlap. The legal doors are different. See the Attorney Brief for case framework distinctions.
There is no controlled human study specifically comparing pediatric and adult responses to residential infrasound. The reasonable inference, based on the broader pediatric noise literature, is yes — for several converging reasons:
Pediatric environmental noise exposure is associated with sleep disruption, blood pressure changes, and reduced cognitive performance in school-age children. See WHO Environmental Noise Guidelines for the European Region (2018): WHO-EURO-2018-3287-43046-60243.
The pregnancy noise-exposure literature is well-developed for occupational and environmental noise, less so for residential infrasound specifically. The documented associations from related noise exposures are consistent enough to take seriously:
The honest gap: most of the pregnancy literature is on audible noise at occupational levels, not residential infrasound. Conservative reasoning from the related literature is that pregnant residents with documented chronic exposure should treat the situation as a meaningful health priority, document the exposure, and discuss it with their obstetrician.
Sources: Selander et al. (2016), Environmental Health Perspectives; meta-analysis on noise and pregnancy complications (2022).
Most symptoms resolve. Some recover slowly. A few may persist.
The honest framing: assume most acute symptoms will resolve, central sensitization will fade over months, and any lingering effects warrant continued medical follow-up. Permanent neurological damage from non-occupational-level residential exposure has not been established in the peer-reviewed literature. Source: Ascone et al. (2021).
Not in the traditional sense. Noise-induced hearing loss (NIHL) is a well-characterized injury to the outer hair cells of the cochlea from prolonged exposure to high-intensity audible-frequency sound (typically >85 dB at speech-range frequencies). Residential infrasound exposure does not match that profile.
What can happen is different:
Bottom line: a standard audiogram may be normal, but the underlying mechanism is different and may warrant extended-frequency and otoacoustic emissions testing. See Salt & Hullar (2010), Hearing Research.
Pets are affected. They are not, however, better infrasound detectors than humans — and this matters for how you frame their behavior.
What pets do not do is hear infrasound. The claim that "my dog reacts so it must be infrasound" is not supported by the audiograms — both species have low-frequency cutoffs comparable to humans. The animal is responding to the same frequencies you are. Sources: Heffner audiogram studies (LSU veterinary audiology summary): lsu.edu/vetmed/deafness/hearingrange.php; Hearing range — comparative audiograms.
Realistic numbers for U.S. residential measurement engagements:
What you get for the higher tier: a calibrated, time-stamped data record; frequency-domain analysis; a written report identifying any anomalous low-frequency content; an expert who can speak to it on the stand. What you do not get: a guaranteed positive result. Professional measurement can confirm exposure or fail to confirm it. Both are useful outcomes.
For locating qualified consultants, the Acoustical Society of America and Institute of Noise Control Engineering are the two professional bodies whose members do this work.
Smartphones are useful as a triage tool and useless as evidence below ~50 Hz. The microphones in iPhones and most Android devices roll off sharply below 100 Hz, are not calibrated, and produce numerically valid-looking output that has no traceable relationship to true sound pressure level. A phone spectrum analyzer can suggest that something is happening in a particular band; it cannot prove it.
Most "infrasound detectors" sold on Amazon for $30–$150 are either repackaged EMF meters (which measure electromagnetic fields, not sound) or audio meters with marketing claims that exceed their actual capability. Several of the most-reviewed devices in the category have flat response only above 100 Hz despite marketing copy claiming infrasound detection. These purchases damage credibility — a case file with a "Ghost Hunter EMF Detector" reading in it will not be taken seriously.
The legitimate consumer-tier options:
Consumer-tier monitors are useful for personal documentation and to build a record across weeks. They are typically not court-admissible as standalone evidence without an expert witness to interpret them. See Detection & Evidence for the full breakdown.
As standalone evidence, generally no. As corroborating evidence interpreted by an expert witness, yes — and that distinction matters.
Admissibility in U.S. courts requires (1) authentication of the data, (2) a foundation that the equipment was capable of measuring what it purports to measure, (3) chain of custody, and (4) typically an expert qualified under Daubert (federal and most state courts) or Frye (a smaller number of state courts) to interpret the data. A consumer-grade infrasound monitor satisfies (1) and (3) easily and (2) for some claims but not others. (4) is where the case is made or lost.
Practically, this means:
Do not rely on consumer monitor data alone in litigation. Do not skip the consumer monitor either — it produces the time-series record that no professional engagement of reasonable cost can replicate. See the Attorney Brief — evidentiary requirements.
Three answers, depending on what you are trying to establish:
The single most common reason a low-frequency case fails is insufficient duration of documentation. The single most common reason it succeeds is the location-dependence comparison. See the Tactical Plan of Action for the full protocol.
This is one of the hardest parts of the experience, and the way most people approach it makes it worse. A short, practical playbook:
And honestly: some family will not be persuaded regardless of the evidence. That is a separate problem that medical and legal documentation cannot solve. Your case can still be built and your remedies can still be pursued. The science does not require a vote.
No. It means you are responding the way a healthy person responds to chronic sleep deprivation, chronic stress, and social isolation. Those are documented downstream effects of the exposure, not evidence against it.
The relevant clinical framing:
The clinically important point is that treating the psychiatric symptoms alone, without addressing the exposure, does not resolve the case. SSRIs and CBT can support a person coping with the experience but they do not stop the cortisol elevation if the exposure continues. The exposure has to be addressed environmentally. The mental health symptoms are real, deserve treatment, and are downstream of the cause. See Scatterty et al. (2026).
A direct script, in order:
What not to do at the first visit:
For your physician's reference, the Clinical Brief on this site is designed specifically to give clinicians a framework for this presentation. You can email them the link or print the Clinical Reference Card before the visit.
Both of these things can be true at the same time, and saying so honestly is what separates this site from less-credible resources:
The practical implication is that some of the relief many sufferers find through distraction, structured activity, sleep hygiene, and cognitive behavioral techniques is real — not because the exposure stopped, but because attention modulation reduces perceived intensity. None of that is evidence against the exposure. It is evidence that human attention shapes experience, which has been known for a century.
The recommended frame: document clinically, then look away. The job of documentation is to capture the data points. The job of the rest of your day is not to monitor for the next episode. People who do nothing but track the exposure get worse; people who document on a schedule and otherwise structure their life around things that absorb them do better. The exposure has not changed; the experience of it has.
See literature on attention modulation in chronic tinnitus (e.g. Frontiers in Neurology, multiple reviews) and on central sensitization in chronic noise exposure populations.
In most cases, leaving is the highest-impact intervention available. The question is how to do it in a way that protects the deposit and the credit, and whether you have grounds to break the lease without penalty.
The honest reality: most renters in this situation cannot wait for the legal remedies to play out and need to move sooner than litigation can support. Moving and pursuing the deposit through small claims is often the most realistic path. See Legal Resources Directory.
Sometimes yes, in the short term. Almost always no, in the medium term. And nothing happens at all if you do not file.
The short-term escalation risk is real and worth naming: a perpetrator who has been informed of complaints, especially if the conduct is deliberate, may escalate temporarily before stopping. This is one of the documented patterns in noise-dispute cases that end badly. It is also why the Tactical Plan recommends against direct confrontation and in favor of formal channels — landlord, 311, code enforcement, ultimately attorney — that create a record without putting you in direct contact with the source.
The medium-term reality is that documented complaint history is the basis of every downstream remedy. Habitability, constructive eviction, harassment, and nuisance claims all require evidence that the landlord (or perpetrator) had notice and failed to act. No complaint, no notice, no claim.
Practical guidance:
See Attorney Brief for the litigation framework.
Almost always yes for ambient sound recording in your own residence. The complexity arises when the recording captures third-party conversation.
Federal law (18 U.S.C. § 2511) permits recording where at least one party to the conversation consents. Most states follow this "one-party consent" rule. Twelve states ("all-party consent" or "two-party consent") require the consent of every party to a recorded conversation: California, Connecticut, Delaware, Florida, Illinois (partially restricted by court ruling), Maryland, Massachusetts, Montana, Nevada, New Hampshire, Pennsylvania, and Washington.
What this means in practice for low-frequency noise documentation:
For acoustic documentation purposes the analysis is usually straightforward: a continuous SPL meter or infrasound monitor logging ambient pressure in your own residence is legal and produces admissible documentation in all jurisdictions. If conversation recording becomes part of the case, consult a local attorney before proceeding. This is not legal advice; recording law varies by state and changes periodically.
Common scenario, different legal route.
In the standard tenant case, the landlord is the deeper-pocket defendant whose obligation under the warranty of habitability is the entry point. When the landlord is the source, or is actively protecting the source, the habitability framework still applies — the landlord is more directly liable, not less — but the path looks different:
The strategic implication: when the landlord is part of the problem, do not route complaints through landlord channels alone. File external — code enforcement, 311, state housing agency — to create a record the landlord does not control. See the Legal Resources Directory for state-specific entry points.
Yes, materially. Owner-occupied condos and HOA-governed properties operate under a different governance and remedy structure than rental properties.
The Florida Seachrist case (referenced in the Documented Cases section) is an HOA scenario: the condo arbitration process imposed civil penalties on the source owner alongside the criminal prosecution. HOA remedies and civil litigation can run in parallel.
It is, when it ends in violence. The Cleveland, Texas mass shooting (2023), the Brooklyn double homicide (2023), the Phoenix police shooting of Ryan Whitaker (2020), the Brown Deer homicide (2025), and dozens of UK and Canadian cases — all covered in major news outlets. See the Documented Cases section.
The non-violent cases are mostly invisible for the reasons the rest of this page documents:
What this means: absence of mainstream coverage is not evidence of absence of the phenomenon. It is evidence that the phenomenon sits in the exact structural blind spot the rest of this site documents.
A few converging reasons, none of which reflect on the underlying physics:
See the Research Library for the current evidence base.
Honest answer: the studies that exist generally have not been independently replicated, and that is a real limitation worth naming.
What replication looks like in this space:
The defensible framing: the evidence base is plausible, growing, and not yet fully replicated. Anyone telling you it is "settled science" is overstating; anyone telling you it has been "debunked" is overstating in the other direction. Real science looks like this — recent, partial, accelerating. See the Research Library for the full set of citations including the Chaban rebuttals.
Right now, somewhere, someone is lying in bed feeling pressure in their skull, hearing a ringing they cannot explain, watching their hands tingle in the dark. They are wondering if they are losing their mind. They are afraid to tell anyone, because they have already seen how it sounds.
This site is for them.
The science is real. The mechanism is documented. The harm is measurable. The path forward exists.
You are not alone. You are not crazy. And you are not without options.
Structured symptom logging, evidence export, and documentation tools for low-frequency noise cases.
If you have direct, first-person experience with low-frequency or infrasound issues from neighbors, we welcome your account. Submissions are reviewed before any publication. You may remain anonymous.