You can record your neighbor’s bass as evidence legally in most of the United States, as long as you record from inside your own home and capture the noise itself rather than any conversation. The harder part is technical: bass sits at frequencies most phones barely register, and many noise ordinances measure sound in a way that discounts low tones. With the right device, a consistent log, and unedited files, you can build a record a landlord, code enforcement officer, or judge will actually take seriously.
Why a Phone Recording Sounds Like Nothing
Bass from a subwoofer or amplified music typically sits between 20 Hz and 250 Hz. Most smartphone microphones bottom out around 50 Hz and perform poorly even above that threshold. The thumping that keeps you awake barely registers on playback, which is why complaints backed only by phone audio tend to sound exaggerated when someone listens in a quiet office.
The measurement side compounds this. Most local noise ordinances set decibel limits using A-weighted readings (dBA), which mimic how the human ear perceives sound and heavily discount low frequencies. C-weighted readings (dBC) capture low frequencies much more accurately. A party might measure 70 dBA but 90 dBC, and the dBC number better represents what’s actually rattling your dishes. If your jurisdiction enforces only dBA limits, documenting both numbers tells the fuller story.
Equipment That Captures Bass
A Digital Audio Recorder
A dedicated recorder with a frequency response extending down to 20 Hz will capture bass that smartphones miss. Models built for music recording handle low frequencies well and typically cost between $50 and $150. Place the recorder against the shared wall or on the floor where vibrations are strongest. Record in an uncompressed format such as WAV rather than MP3, because compression strips out the low-frequency content you’re trying to preserve.
A Sound Level Meter
A sound level meter gives you objective decibel readings that carry more weight than a description of “really loud bass.” Meters are classified under international standards as Class 1 or Class 2. Class 1 meters hold accuracy within about ±1 dB across a wide range starting as low as 16 Hz. Class 2 meters allow roughly ±2 dB of variance and cover a narrower range starting around 100 Hz. Class 1 produces more defensible data for legal purposes; Class 2 is adequate for initial documentation and typically runs $100 to $300.
Whichever meter you buy, take readings in both dBA and dBC if the device supports it. When dBC significantly exceeds dBA, that gap itself is evidence the disturbance is dominated by bass, which is often persuasive to someone who might otherwise glance at a dBA number and shrug.
Smartphone Apps, With Limits
Decibel meter apps are convenient for a quick check. The best-performing ones correlate well with professional meters at moderate levels, but accuracy drops at higher decibel levels, with some apps underreading by 10 dB or more. Smartphone microphones also struggle below 50 Hz, exactly where the most disruptive bass lives. Use an app to get a rough sense of the problem, not as your only measurement.
Video
Video documents what audio cannot: rattling windows, vibrating furniture, items shifting on shelves, water rippling in a glass. Even when the camera’s microphone barely picks up the sound, the visual proof of physical vibration is immediately understandable to anyone reviewing your complaint.
How to Record So It Actually Counts
At the start of each session, state your name, the date, the time, and your location out loud into the recording. That narration ties the file to a specific incident even if metadata later gets stripped. Record for at least 30 to 60 seconds per incident to capture a representative sample. If the bass runs for hours, capture the beginning, a mid-session stretch, and the end.
Keep a written noise log alongside the recordings. For each incident, note the date, start and end time, the type of sound, its apparent source, any decibel readings, and how it affected you. An entry like “Woke me at 1:15 a.m., bass from unit 4B, 58 dBA / 74 dBC at bedroom wall, could not fall back asleep until noise stopped at 3:40 a.m.” is what builds a case. “Loud music again” is not.
Record on multiple occasions. One recording shows an incident; twenty across six weeks show a chronic problem. Courts and code enforcement both weigh frequency and duration heavily when they evaluate a complaint.
Is It Legal to Record?
Recording laws focus on intercepting private communications, not on capturing environmental noise. Federal law under 18 U.S.C. § 2511 prohibits intercepting wire, oral, or electronic communications without consent, with a one-party consent baseline: if you’re a party to the communication, or one party consents, the recording is lawful.1Office of the Law Revision Counsel. 18 USC 2511 – Interception and Disclosure of Wire, Oral, or Electronic Communications Prohibited About 11 states go further and require all-party consent. These laws govern conversations between people.
Bass thumping through your wall is not a conversation. Standing in your own home recording noise that’s audible without any special amplification, you’re documenting an environmental condition. There’s no reasonable expectation of privacy in sounds that travel uninvited into your living space, which is why noise recordings are routinely accepted by landlords, code enforcement, and courts without raising wiretap concerns.
You can get into trouble by going beyond documenting the noise. Pointing a directional microphone at a neighbor’s window, placing a recording device on their property, or using amplification to pick up sounds you couldn’t otherwise hear crosses from noise documentation into potential eavesdropping. Record only what you can hear naturally from inside your own home or a common area, and you stay well within legal bounds.
Keeping the Recordings Usable as Evidence
A recording is only useful if you can prove it’s authentic and unaltered. Federal Rule of Evidence 901 requires the person offering an item to produce evidence that the item is what they claim it is.2LII / Legal Information Institute. Rule 901 Authenticating or Identifying Evidence For audio, that usually means testimony about when, where, and how you made the recording, plus evidence that the device produces accurate results.
Never edit the files. Don’t trim silence, adjust volume, or convert formats. Any alteration invites questions about what else might have changed. Keep the originals on the device that created them and make copies for submission. If you transfer files, document each step: “Copied from recorder to laptop via USB on March 15, 2026, file name unchanged.”
Digital audio files carry embedded metadata (timestamps, format, codec) that helps show a file hasn’t been re-encoded. Avoid opening recordings in audio editing software, even just to listen, since some programs modify metadata on access. Use a standard media player. Store originals in at least two locations, and label everything consistently by the date and time of the incident.
Where to Take the Evidence
Escalate gradually. If you feel safe, talk to your neighbor first, during the day and not mid-incident. Many people don’t realize how much bass travels through shared walls and floors. Note the conversation in your log either way; mediators and courts want to see you tried.
If you rent, check your lease for noise or quiet enjoyment clauses and submit your documentation to your landlord or property manager in writing. Landlords can issue lease violations, impose fines, and start eviction proceedings for repeated violations. HOAs enforce community rules similarly. Keep every communication in writing.
File a formal complaint with your local code enforcement office or the police non-emergency line, and provide your documentation. When you call during an active disturbance, an officer may take an independent measurement, which creates an official record harder to dispute than your own. Ask for a case or reference number every time.
Many communities offer free or low-cost mediation for neighbor disputes. A neutral mediator can help both sides agree to limits, such as no bass-heavy music after a certain hour. Mediation is faster and cheaper than court, and some jurisdictions require it before a nuisance case can proceed.
For persistent problems, a private nuisance claim in small claims or civil court is an option. You’d generally need to show that the neighbor’s conduct unreasonably interfered with your use and enjoyment of your property, that an ordinary person would find it objectionable, and that you suffered harm. Your log, recordings, decibel readings, and any statements from other affected neighbors form the backbone of the case. Small claims dollar limits vary by jurisdiction. If you want the court to order the noise stopped rather than award money, you’ll likely need regular civil court for an injunction, and a local attorney is worth consulting before you file.
Don’t Cross Into Harassment
Recording noise from your own home is fine. Setting up cameras aimed at your neighbor’s windows, photographing their guests, or flying a drone over their yard to capture audio shifts you from complainant to aggressor, and courts have issued injunctions against neighbors whose “documentation” became a pattern of intimidation. Keep the recordings focused on the noise, made from inside your home, and let the files speak for themselves.