Observed arrival · 2026-09-17
Room Tone Register: a field manual for measuring recording spaces
A focused reference for measuring room tone, noise floor, decay time, mains hum, and related recording conditions.
Field notes
The register separates stable definitions from measurements that can change, marking the latter with a checked line and a date. Its procedures cover practical recording decisions, including a 20-minute noise-floor measurement, a 60-second room-tone capture, and a mirror-method reflection check. The source log names three ISO documents and says each link points to a specific supporting document rather than a general homepage. The page also records disagreements, including a 4.5 dB difference between two meters.
Observed signals
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Editorial observations of this landing page, not a rating.
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