To totally remove noise in “silence” so it is “dead silence” you need to use a noise-gate plugin, see step 5.
Suggested work flow to reduce noise from “raw b4 editing II”…
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Amplify on default settings, (i.e. to 0dB)
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select a region for the noise-profile which has no voice, e.g. 1.5sec to 6 secs.
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Apply Audacity’s native Noise Reduction with the settings: 10dB, 6dB, 1000Hz, 0 seconds , remove .
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Optional : select all of your track and put the code below in the Nyquist prompt to remove the faint 1KHz whine + 10 harmonics , ( I’m nitpicking here : you may not be able to hear the faint whine, if so don’t bother with his step).
(setq mysound s)
(setq q 10) ; set the base Q for the filter
(setq iter 10) ; set the number of iterations
(setq freq 1000) ; set base frequency
; start the DO loop
(dotimes (i iter mysound)
(setf mysound (notch2 mysound (* freq (1+ i)) (* q (1+ i))))
) ;end of loop
5. Select any conspicuous unwanted noises between phrases, e.g. 11.40-11.60sec, press “Ctrl” +“L” to silence them.
Then select the entire track and apply a noise-gate to squelch the noise between the phrases.
[continued on next post …]