Free · No login required
Noise Gate Margin
Compare a noise gate’s opening threshold, hysteresis and measured detector noise before setting up a channel.
Opening threshold (dBFS): -120–0; Hysteresis width (dB): 0–40; Detector noise level (dBFS): -160–0
Inputs stay on this page and clear on refresh.
Noise Gate Margin
Opening threshold (dBFS): -30 Hysteresis width (dB): 6 Detector noise level (dBFS): -50
- Closing threshold (dBFS)
- -36.000000
- Noise below closing threshold (dB)
- 14.000000
Closing threshold = opening threshold − hysteresis width. Noise margin = closing threshold − measured detector noise. Positive margin means noise is below the closing threshold; negative means it is above; zero is exactly on the boundary. Use matching dBFS references and the same detector, sidechain filtering and peak/RMS convention. Increasing hysteresis lowers the closing threshold and reduces this margin. This is a level comparison, not a prediction of current gate state or noise reduction: attack, hold, release, knee, range, detector fluctuations and device-specific boundary rules are excluded. Confirm with listening and the actual gate meter.
Methodology
How it works
Closing threshold = opening threshold − hysteresis width. Noise margin = closing threshold − measured detector noise. Positive margin means noise is below the closing threshold; negative means it is above; zero is exactly on the boundary. Use matching dBFS references and the same detector, sidechain filtering and peak/RMS convention. Increasing hysteresis lowers the closing threshold and reduces this margin. This is a level comparison, not a prediction of current gate state or noise reduction: attack, hold, release, knee, range, detector fluctuations and device-specific boundary rules are excluded. Confirm with listening and the actual gate meter.
Method and assumptions documented by Techrider.live
2026-11-06
Frequently asked questions
Does positive margin guarantee clean gating?
No. Peaks can cross the thresholds, timing affects closure and the desired signal may also be cut. Measure the processed detector signal and confirm settings on the actual device; this tool does not model its algorithm.