Audacity Forum

Low-Pass Filter... is the lowest option Audacity ships with more plug-ins than that. You should be able to go further down the list than "Low-Pass Filter". Try this: 1) Click on "Effect" in the main menu 2) While the Effect menu is open, press the "N" key repeatedly. T...

And if you scroll down this list a bit further?

whykai wrote: ↑
Mon Oct 28, 2019 10:42 am
Is it possible to use the ffmpeg mp3-decoder in Audacity instead of libmad ?

Yes. Use the File menu "Import" command, and in the file type filter, select "FFmpeg compatible files". Audacity will then try using FFmpeg first when importing the selected file(s).

Launch Audacity and generate, record or import some audio.
With the track selected, run this command in the Nyquist Prompt:

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(format nil "~s" (aud-do "NoiseGate"))

What happens?

In the list of enabled plug-ins, what does it say is the "Path" to the Noise Gate plug-in? (you may need to expand the dialog to see the full path)

I see that your original post says: "although it is showing as "Enabled" on the list of plug-ins under the "Add / Remove Plug-ins..." section" I want to check that that is actually the case. If I take everything you have said on face value, then your computer is doing t...

Michael Kazmierski wrote: ↑
Mon Oct 28, 2019 12:06 am
but I honestly do NOT like having to control how many iterations!

Then just loop until

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(> (* basef (1+ (* odd 2.0)))
   (/ *sound-srate* 2.0))

Any suggestions? You could use something like this (below). ;control basef "Base frequency" float "" 50 10 100 ;control odd "Number of odd Harmonics" int "" 20 0 200 ;control even "Number of even Harmonics" int "" 1 0 20 (defun dehum (s-in...

Michael Kazmierski wrote: ↑
Sun Oct 27, 2019 11:09 pm
I want to modify it so that it notches out the odd harmonics and only the odd harmonics.

There's already a plug-in that can do that:
viewtopic.php?p=79481#p79481

Does the plug-ins manager say that Noise Gate is enabled?

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