Observed arrival · 2026-10-26
DutyNode’s data-centre noise checker
A free checker compares low-frequency noise readings with WHO and DEFRA screening methods, alongside a tracker for data-centre noise cases and rules.
- For
- Residents documenting low-frequency data-centre noise
- Worth noticing
- The full screen accepts 13 one-third-octave readings from 10 to 160 Hz and compares them with a reference curve.
Field notes
The quick screen asks for paired A-weighted and C-weighted readings from the same sound; the full form accepts 13 frequency-band values, including pasted readings from a meter or spreadsheet. DutyNode’s method description cites the WHO’s 1999 guidance and DEFRA’s NANR45 procedure, and includes advice on indoor measurement and phone-microphone limitations. A separate USD 39 offer is for a PDF report with a chart, measurement log, sources, and an adaptable letter.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue