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missing frequencies in Mel FillterBank #83

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saddlekiller opened this issue Jul 30, 2019 · 2 comments
Open

missing frequencies in Mel FillterBank #83

saddlekiller opened this issue Jul 30, 2019 · 2 comments

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@saddlekiller
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Hi,

When I tried to extract fbank features I found missing frequencies. So, I checked the filter bank in your code and found this:
image
I am curious about why remove values in 2nd and 6th rows? Is there any trick or that's a bug actually?

@tadangkhoa1999
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Hi, i have same problem. Have you fixed it?

@jameslyons
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jameslyons commented Nov 10, 2021

Hi, i have same problem. Have you fixed it?

This is because of rounding in the mel.filterbank calculation. Increase NFFT to fix it. In any case, it wont affect the accuracy of derived features to any significant degree.

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3 participants