Hello list,
I'd like to implement click removal and noise suppression techniques for a specific signal I have that is full of:
- loud clicks, but very regular in time and short (2ms)
- 50 Hz noise with harmonics. This one has two spectral patterns
switching to one or the other during time.
For the clicks, I tried median filtering, but it's not working well. I tried to work with audacity on a recorded extract, and I have pretty good results with their click suppression and noise removal algorithms. So I was thinking of implementing them in Pd, but before I do that I was wondering if some of you have already implemented some of these techniques, or of you have any advices?
https://github.com/audacity/audacity/blob/master/src/effects/ClickRemoval.cp... https://github.com/audacity/audacity/blob/master/src/effects/NoiseRemoval.cp...
Best,
Nicolas
Hello,
I already use the FFT tutorial patch for noise removal, this is the best tool I have for that, but I'm sure those externals would contribute a lot
Le 28/02/2017 à 11:20, Nicolas Montgermont a écrit :
Hello list,
I'd like to implement click removal and noise suppression techniques for a specific signal I have that is full of:
- loud clicks, but very regular in time and short (2ms)
- 50 Hz noise with harmonics. This one has two spectral patterns
switching to one or the other during time.
For the clicks, I tried median filtering, but it's not working well. I tried to work with audacity on a recorded extract, and I have pretty good results with their click suppression and noise removal algorithms. So I was thinking of implementing them in Pd, but before I do that I was wondering if some of you have already implemented some of these techniques, or of you have any advices?
https://github.com/audacity/audacity/blob/master/src/effects/ClickRemoval.cp... https://github.com/audacity/audacity/blob/master/src/effects/NoiseRemoval.cp...
Best,
Nicolas
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
I'm not sure an abstraction is mandatory. a fft threshold is used as well in audacity for noise removal http://wiki.audacityteam.org/wiki/How_Audacity_Noise_Reduction_Works so the fft I.03.resynthesis example should be a good starting point. I don't really understand how they do click suppression though n
Le 28/02/2017 à 13:57, patrice colet a écrit :
Hello,
I already use the FFT tutorial patch for noise removal, this is the best tool I have for that, but I'm sure those externals would contribute a lot
Le 28/02/2017 à 11:20, Nicolas Montgermont a écrit :
Hello list,
I'd like to implement click removal and noise suppression techniques for a specific signal I have that is full of:
- loud clicks, but very regular in time and short (2ms)
- 50 Hz noise with harmonics. This one has two spectral patterns
switching to one or the other during time.
For the clicks, I tried median filtering, but it's not working well. I tried to work with audacity on a recorded extract, and I have pretty good results with their click suppression and noise removal algorithms. So I was thinking of implementing them in Pd, but before I do that I was wondering if some of you have already implemented some of these techniques, or of you have any advices?
https://github.com/audacity/audacity/blob/master/src/effects/ClickRemoval.cp...
https://github.com/audacity/audacity/blob/master/src/effects/NoiseRemoval.cp...
Best,
Nicolas
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
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Nicolas Montgermont -
patrice colet