Audacity Forum

Here is a sample of groove noise after the pops and crackle have been reduced.( I used Wave Corrector) I was thinking it might be easier to just use Dominic Mazzoni's Noise Removal, and take a noise profile from the groove noise? ( Perhaps after also applying a LP filter to the groove noise sample.)...

I've come round to your idea jtp_60 My latest code uses an envelope follower to control the cut-off frequency of a high pass filter. The envelope follower uses RMS values takes over 100 samples, which stops the filter from jittering on crackles. Including a fixed sub-sonic filter takes care of any ...

I'll post my new dynamic rumble filter here shortly. It will probably need a bit of tweaking for optimum performance, so I hope you guys/gals will be able to give some feedback on its effectiveness. The technique exploited here is the masking of turntable rumble frequencies during loud bass passage...

stevethefiddle wrote:I see some downloads - any comments? Did it work?

Hi Steve,
It seems quite promising, these are the settings I used ( see attachment ).

P.S. It might be an advantage to change " gate frequencies above 20 " to say
5HZ to remove subsonic turntable frequencies.

I don't think the poster is looking for Cut To Silence during the quiet passages, I think they want a high pass filter switching in and out depending on the show volume.

That's right, it was a variable or switching high pass filter.

About 35 years I came across an audio amplifier that had a dynamic rumble filter that reduced turntable rumble on quiet passages, but was turned off when there were load passages. It was actually quite effective.
Could such a filter be implemented with Audacity or with a VST plug-in?