denoising tips
Moderator: Martin Hairer
denoising tips
i'm puzzled by the settings for the denoise tool in the effects menu. thru trial & error i've achieve ok results, but would like to know when to go for 'long fft' or 'short fft,' 'peaked' vs 'smooth' and how to set the sensitivity. any info is appreciated.
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denoising tips
My recollection is that this is a variant of the "Wiener" or optimized
filter. In essence, one must have an estimate of the frequency spectrum
of the noise (peaked or smooth) and an estimate of the power (I think
this probably in the sensitivity factor.
Other notes -- it often helps to avoid artifacts if the sample noise is
copied to a new file, attenuated and then selected as the noise source.
It won't do as good a job at removing noise, but the artifacts will be less.
Chuck
alansilv wrote:
Charles D. Jonah CDJonah@anl.gov
630-252-3471
Chemistry Division
Argonne National Laboratory
Argonne, IL 60439
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filter. In essence, one must have an estimate of the frequency spectrum
of the noise (peaked or smooth) and an estimate of the power (I think
this probably in the sensitivity factor.
Other notes -- it often helps to avoid artifacts if the sample noise is
copied to a new file, attenuated and then selected as the noise source.
It won't do as good a job at removing noise, but the artifacts will be less.
Chuck
alansilv wrote:
--i'm puzzled by the settings for the denoise tool in the effects menu. thru trial & error i've achieve ok results, but would like to know when to go for 'long fft' or 'short fft,' 'peaked' vs 'smooth' and how to set the sensitivity. any info is appreciated.
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Charles D. Jonah CDJonah@anl.gov
630-252-3471
Chemistry Division
Argonne National Laboratory
Argonne, IL 60439
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Re: denoising tips
cd Jonah said:
0db
Mr Jonah: that's really cute- I like that one!...it often helps to avoid artifacts if the sample noise is
copied to a new file, attenuated and then selected as the noise source.
It won't do as good a job at removing noise, but the artifacts will be less.
0db