[PD] Click Removal & Noise suppression

[Nicolas Montgermont]

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

http://nimon.org

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.cpp
>>
>> https://github.com/audacity/audacity/blob/master/src/effects/NoiseRemoval.cpp
>>
>>
>> Best,
>>
>> Nicolas
>>
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