How to Prevent Echo During Noise Reduction

i had dickens of time trying find out how reduce echo left after background noise removed. however, didn't give , after playing of settings, believe i've figured out! i'm using adobe audition cc (6.0). you'll want follow steps below method of noise reduction, not after fact. we're preventing the echo during noise removal, not getting rid of it...if makes sense. start original audio noise, then...

 

1. perform usual procedures of selecting background noise , sampling (shift + p)
2. select audio (ctrl + a)
3. get ready apply noise reduction: effects > noise reduction/restoration > noise reduction (process) or ctrl + shift + p
4. in window appears, played around 3 settings (see image below):
   • noise reduction slider (85%)
   • reduce slider (about 40 db)
   • under "advanced" section (you may have click on little triangle/arrow expand it), spectral decay rate (10%). final setting made huge difference!
5. put audio on loop if it's short clip , click play button hear sampling of noise reduction applied.
6. adjust 3 settings mentioned above until have desired effect.
7. click "apply".

 

i hope helps!!

 

may make suggestion?  although you're experiments useful, trying find 1 size fits "one pass" solution won't yield best results.  if can hear nr artifacts (the echoey quality refer to) @ point, you've done noise reduction in 1 go.

 

generally, you're better off doing 3 or 4 passes of light noise reduction, grabbing new noise sample each time.  "normal" noise, can worthwhile increase fft size (on advanced menu) preset or before grabbing each of sequential noise samples.

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