Noise Floor Checker
Noise Floor Checker
Measure background noise, detect mains hum, and find out if your recording environment is quiet enough.
Drop audio or video here
or click to choose a file
Your file stays in your browser. Nothing is uploaded.
How to use
- Drag a file in, or click the dropzone to choose one.
- Click Analyze. We sample the quietest sections of the track and measure noise floor, mains hum, and hiss character — all in your browser.
- Read the verdict and apply the recommendation. Copy the result if you want to share it.
What this checks
The noise floor is the level of background sound — HVAC, computer fans, room tone — measured during the quietest parts of your track. We report it in dBFS (decibels relative to full scale). Lower is quieter.
We also look for mains hum at 50 Hz or 60 Hz (the frequency depends on your country) and classify the hiss type. Voice-log targets: pass at -55 dBFS or quieter, with no audible hum.
Privacy
Your file stays in your browser. Decoding and analysis run locally with the Web Audio API and ffmpeg.wasm. Nothing is uploaded.