Multi-Band Noise Gate Multi-Band Noise Gate removes all the audio data below a given threshold in the audio file. Select Effects -> CleanUp -> Noise Reduction -> "Spectral subtraction based on noise sample".Select Effects -> CleanUp -> Noise Reduction -> "Grab noise sample from selected area for spectral subtraction".It usually works well on voice and is nice and easy to use just select the region and apply the effect. Spectral Subtraction Automatic Method This approach will automatically estimate what is noise and what is not. Sometimes using both (spectral always must be first) then multiband gates works very well. The slow but accurate "Spectral Subtraction" method - usually used where noise is really a problem - and the fast "Multiband Noise Gates" method - usually just automatically on batch voice recording jobs. Audio Cleanup - Noise Reduction There are two ways of reducing noise.
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