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l2009312042 avatar l2009312042 commented on August 29, 2024 1

thx,i got it
the follow is my understanding of the alpha loss

image

from deepfilternet.

Rikorose avatar Rikorose commented on August 29, 2024

This is a frame-level SNR prediction. This can be used for a voice detection or to turn of the decoder/dfnet for parts where we only have noise (e.g. here)

from deepfilternet.

l2009312042 avatar l2009312042 commented on August 29, 2024

thanks , this make sense .
but i have another question, in your above answer ,when lsnr < -15,the df is on.
but in the paper ,the df is not good for noise part ,those two are contradictory, how to explain this?
image

from deepfilternet.

Rikorose avatar Rikorose commented on August 29, 2024

Oh yea. It should be off, i.e. the other way round. The PR that I linked is not merged and could have some bugs.

But what the paper states is enforced via alpha.
I.e. here

df_coefs, df_alpha = self.df_dec(emb, c0)

and here
class DfAlphaLoss(nn.Module):

from deepfilternet.

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