Search found 1730 matches

by Robert J. H.
Mon Jul 28, 2014 10:37 pm
Forum: General Audio Programming
Topic: NoiseRemoval.cpp
Replies: 138
Views: 28903

Re: NoiseRemoval.cpp

These changes were simply mistakes introduced in version 9290 which was supposed to be for performance only. In my opinion, Normalizer should be made a better Normalizer. It is not the purpose of this effect to normalize. I have also written a fix for the frequency smoothing which accidentally beca...
by Robert J. H.
Sun Jul 27, 2014 1:12 pm
Forum: General Audio Programming
Topic: NoiseRemoval.cpp
Replies: 138
Views: 28903

Re: NoiseRemoval.cpp

If I recall (I've not checked the code), the DC component is discarded. It's correctly handled, as far as I can see. Another interesting improvement could be to transfer the smoothing factor from being linear to logarithmic. In other words, it is currently fixed over a certain frequency range. We c...
by Robert J. H.
Sun Jul 27, 2014 7:24 am
Forum: General Audio Programming
Topic: NoiseRemoval.cpp
Replies: 138
Views: 28903

Re: NoiseRemoval.cpp

5) In these lines: // Apply gain to FFT for (j = 0; j < (mSpectrumSize-1); j++) { mFFTBuffer[j*2 ] = mRealFFTs[out][j] * mGains[out][j]; mFFTBuffer[j*2+1] = mImagFFTs[out][j] * mGains[out][j]; } // The Fs/2 component is stored as the imaginary part of the DC component mFFTBuffer[1] = mRealFFTs[out]...
by Robert J. H.
Sun Jul 27, 2014 6:50 am
Forum: Windows
Topic: 2.0.6-alpha-Jul 22 2014 - Doesn't load the FFMpeg Plug-Ins
Replies: 10
Views: 1697

Re: 2.0.6-alpha-Jul 22 2014 - Doesn't load the FFMpeg Plug-I

It seems to work with those libraries.
I've deleted the old config file. I'm considering Steve's proposal with portable settings, at least if the VST Effects won't be accessible for some time in the 2.0.6A.
by Robert J. H.
Fri Jul 25, 2014 4:33 pm
Forum: Windows
Topic: 2.0.6-alpha-Jul 22 2014 - Doesn't load the FFMpeg Plug-Ins
Replies: 10
Views: 1697

Re: 2.0.6-alpha-Jul 22 2014 - Doesn't load the FFMpeg Plug-I

I think that the 2.0.6 alpha needs different FFmpeg libraries, e.g. aformat55.dll.
See the locate dialog title--under preferences/libraries/FFmpeg).
They are not yet prepared/available for Audacity.
Gale should know that precisely.
by Robert J. H.
Thu Jul 24, 2014 5:34 pm
Forum: Feature Request Archive
Topic: Find out the total number of tracks, muted and solo
Replies: 18
Views: 4274

Re: Find out the total number of tracks, muted and solo

One can essentially use any of the context menu entries, such as play in..., media info pproperties and so on. Can you do that from within the Audacity file browser dialog? That's what I'd like, so that I don't need to also navigate to the folder in the system file browser. That's exactly the idea ...
by Robert J. H.
Thu Jul 24, 2014 3:23 pm
Forum: Feature Request Archive
Topic: Find out the total number of tracks, muted and solo
Replies: 18
Views: 4274

Re: Find out the total number of tracks, muted and solo

CoolEdit Pro had both a Play button and file properties in the file open dialogue. I'm +1 on a Play button - are you? I already voted for file properties display after import. Yes, +1 on a Play button, but I think I already voted for that. I'd prefer file properties to be available before import. W...
by Robert J. H.
Mon Jul 21, 2014 6:58 pm
Forum: Audio Processing
Topic: Any opinions about Nonlinear-Compressor XI.ny ?
Replies: 21
Views: 3427

Re: Any opinions about Nonlinear-Compressor XI.ny ?

Have you ever looked at histograms for peak dB minus rms dB? For a square wave it is 0, for a sine wave it is 3, for speech it would vary a lot but sometimes be large. I often see very asymmetrical waveforms in vowels, tall narrow peaks balancing broader lower excursions on the opposite side of the...
by Robert J. H.
Mon Jul 21, 2014 5:38 am
Forum: Audio Processing
Topic: Any opinions about Nonlinear-Compressor XI.ny ?
Replies: 21
Views: 3427

Re: Any opinions about Nonlinear-Compressor XI.ny ?

Hm, you take histograms of mean-square over 100 ms intervals, or something like that? Does that tend to a bimodal distribution of "speech" and "pauses?" Exactly so. I've been pondering about the problem of levelling a two-side conversation (Skype). I wanted to study the histogra...
by Robert J. H.
Sun Jul 20, 2014 6:58 pm
Forum: Audio Processing
Topic: Any opinions about Nonlinear-Compressor XI.ny ?
Replies: 21
Views: 3427

Re: Any opinions about Nonlinear-Compressor XI.ny ?

I am confused, is this or ain't this part of the Audacity distribution? I still can't find it in the latest svn repository. I meant the CMU libraries documentation that includes naturally the libs of Standalone Nyquist. Does this mean, you are using a gain function with two segments and a hard knee...