If you don't mind compiling from source, it's pretty easy to add these improved noise reduction options to Audacity. Here's how:
- Uninstall Audacity if you already have it installed.
- Download the Audacity source code. The latest version as of today is 2.0.2.
- Extract the source code tarball.
- Make sure you have the necessary dependencies to compile Audacity (see section 4 in the README.txt included with the Audacity source code).
- Download the spectral subtraction patch attached to this post: audacity-src-2.0.2 folder that was created when you extracted the Audacity source code. ...and extract it into the
- Download the noise coring patch from here (click the download link on the right-hand side of the page). You will need to extract noise-coring.patch from the downloaded zip file and place it in the same folder you placed the other patch.
- Patch the source code by running the following commands from within the audacity-src-2.0.2 folder:
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patch -p 1 < audNR.patch
patch -p 1 < noise-coring.patch
- Assuming you didn't get any errors during the patching process, you are now ready to compile. Run the following commands in order, noting that each one must succeed without errors before you can proceed to the next one:
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sudo make install
If you get any errors after running ./configure, you may be missing dependencies. Install the missing dependencies and then try running ./configure again. Hopefully, you won't get any errors during make.
- If all three commands completed successfully, then Audacity should be installed, complete with new noise removal options. Start up Audacity and go to the Effects menu. You should now have two noise removal options: Noise Coring and Noise Removal. The Noise Removal effect will have new sliders for Subtraction and Power.