How to remove (cut off) all sounds below -25 db in Adobe Audition?

Question

Video processing

It is necessary to remove the sounds that characterize the rustle, whisper and other uneven quiet sounds in Adobe Audition or in iZotope RX. How to do it? Or, on the contrary, compress the audio file in such a way that sounds below the specified volume threshold are not affected in processing, i.e. remained at the same level.

Answer 1

there is a Gate device - It will cut off sounds below a certain threshold. which will remain higher.
after clipping, the anti-phase sum of these files will give those below.
compression of the dynamic range is performed by a compressor with the setting of the desired threshold.