Search found 884 matches

by Paul L
Thu Aug 28, 2014 5:09 pm
Forum: Audio Processing
Topic: Right mouse button menus
Replies: 13
Views: 2317

Re: Right mouse button menus

I know only two uses of right mouse in Audacity for Windows, for zooming out in the vertical rulers, and with the magnifier tool. I see comments in ToolsToolBar.cpp suggest that this tool is very different on the other operating systems.
by Paul L
Thu Aug 28, 2014 4:38 pm
Forum: Audio Processing
Topic: Right mouse button menus
Replies: 13
Views: 2317

Right mouse button menus

I am sure it must have been discussed somewhere. Why does Audacity make little (or no?) use of the right mouse button for pop up menus? For instance "find zero crossings" and "repeat last effect" are very common things I do with my selection and it might be nice to do that all one handed.
by Paul L
Mon Aug 11, 2014 10:51 pm
Forum: Audacity 2.x Feedback and Reviews
Topic: I am trying to PM you, Steve...
Replies: 2
Views: 1330

I am trying to PM you, Steve...

...but my messages are getting stuck in Outbox.

It's about some minor implications of the patch you accepted from me for 2.0.6.
by Paul L
Sun Aug 03, 2014 1:45 am
Forum: General Audio Programming
Topic: NoiseRemoval.cpp
Replies: 138
Views: 28752

Re: NoiseRemoval.cpp

7) Doing Get Profile in a project at one sample rate, then doing Remove Noise in a project with a different sample rate, does the wrong thing. I don't yet have a test case but I predict this. The program ought to check for this condition and just refuse to do it, I suppose. Because the assumption i...
by Paul L
Sat Aug 02, 2014 8:49 pm
Forum: General Audio Programming
Topic: Noise Removal: better spectral gating, not subtraction
Replies: 3
Views: 5357

Re: Noise Removal: better spectral gating, not subtraction

I got Jerome Berger's Noise Coring compiled on windows. It required a few modifications to compile for me.
by Paul L
Sat Aug 02, 2014 3:30 pm
Forum: General Audio Programming
Topic: Noise Removal: better spectral gating, not subtraction
Replies: 3
Views: 5357

Re: Noise Removal: better spectral gating, not subtraction

I am reading the code for the noise coring proposal, which is doing something sophisticated I don't fully understand yet. I have also read the code for the patch implementing spectral subtraction. The fix is too simple and needs much work. 1. There is an attempt to fix what Isolate does, but I am no...
by Paul L
Fri Aug 01, 2014 9:19 pm
Forum: General Audio Programming
Topic: Noise Removal: better spectral gating, not subtraction
Replies: 3
Views: 5357

Noise Removal: better spectral gating, not subtraction

There's a proposal on the wiki that I think is worth reading: http://wiki.audacityteam.org/wiki/Proposal_Noise_Removal I was particularly encouraged by the preliminary tests of "Spectral Subtraction" (the current effect is more like a "spectral gating" type effect). Though I don't think the current...
by Paul L
Fri Aug 01, 2014 4:55 pm
Forum: General Audio Programming
Topic: NoiseRemoval.cpp
Replies: 138
Views: 28752

Re: NoiseRemoval.cpp

Multi-rate works at different sample-rates and prepares the result approbriately--as a wavelet for example. In our case, it would simply mean that the attack release times or the time smoothing would be different according to frequency. I don't understand this. Using two windows is even simpler. .....
by Paul L
Fri Aug 01, 2014 3:51 pm
Forum: General Audio Programming
Topic: Noise removal "tinklebells" and how to fix them
Replies: 23
Views: 11291

Re: Noise removal "tinklebells" and how to fix them

Do I need to slow down? :-)

I am having pleasant idea overload.
by Paul L
Fri Aug 01, 2014 3:50 pm
Forum: General Audio Programming
Topic: Noise removal "tinklebells" and how to fix them
Replies: 23
Views: 11291

Re: Noise removal "tinklebells" and how to fix them

Remember the example of noise mixed with a chirp, then trying to subtract the noise with noise removal? I am trying with the Hann window before analysis, and it works like a charm! As you can see that the Hann window spectrogram has less mess than the rectangular, noise reduction is more even throug...