Show HN: Free noise evidence generator for tenant complaints

Neighbors vs Subwoofers: Can your phone win in court?

TLDR: A free app promises court‑ready noise complaint reports straight from your phone. Commenters love the idea but question the name, calibration, and whether smartphone readings are admissible, citing the CDC’s iPhone‑only meter; tenants cheer, bass lovers boo, and everyone wants proof before decibels decide neighbor wars.

An app called Noise Evidence Generator promises court-ready noise complaint reports, turning your phone into a “professional-grade” meter—free, instant, and no sign-up. The crowd immediately asked: evidence or invention? One early commenter said the name sounds like faking proof, urging a switch to “recorder.” Calibration panic followed as people questioned whether different phone mics measure the same sound, and demanded court documents backing the claims. Another user dropped the buzzkill: legal proof needs a “metrological chain of trust,” meaning certified gear and traceable accuracy.

Then came the humor. A proud homeowner bragged that his well‑insulated house and subwoofers will dodge any tenant‑driven litigation, turning the thread into “HOA vs Bass” memes. Others were cautiously impressed by the slick experience but wanted hard validation, pointing to the CDC’s NIOSH Sound Level Meter tested to about ±2 dB on specific iPhones. The makers say modern phones are within ±5 dB, and the app auto‑matches city ordinances and exports PDFs—tenants cheered, landlords side‑eyed, and audiophiles clutched their calibrators. Biggest vibe: cool tool, hotter name, and it’s a legal gray zone until calibration and admissibility get receipts. Until then, it’s neighbor vs neighbor with decibels as ammo everywhere online.

Key Points

  • Web tool converts smartphones into noise meters for documenting complaints aligned with US city ordinances.
  • Supports tenants, construction/industry, HOAs/property managers, and legal professionals with court-ready PDF reports.
  • Workflow: select city, record or upload audio, analyze real-time levels/violations, export evidence PDFs.
  • Measures in decibels with a typical smartphone accuracy cited as within ±5 dB; supports ~0–120 dB range.
  • Guidance includes 30s minimum recordings (1–3 minutes recommended), mic permission checks, and a limit of 10 free PDFs/day.

Hottest takes

"noise evidence generator" sounds like you're creating fake noise proof to fool courts — alex_duf
How do we know microphones on different devices are calibrated? — uoaei
Me and my subwoofers escape litigation facilitated by this SaaS — waffletower
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