Apply Bessel correction in fbank conversion (#71)

facebookresearch · Sep 28, 2023 · c5f0d7e · c5f0d7e
1 parent 3593eca
commit c5f0d7e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fairseq2n/src/fairseq2n/data/audio/waveform_to_fbank_converter.cc b/fairseq2n/src/fairseq2n/data/audio/waveform_to_fbank_converter.cc
@@ -70,7 +70,7 @@ waveform_to_fbank_converter::operator()(data &&d) const
     if (opts_.standardize()) {
         at::Tensor stdev{}, mean{};
 
-        std::tie(stdev, mean) = at::std_mean(fbank, /*dim=*/0, /*unbiased=*/true);
+        std::tie(stdev, mean) = at::std_mean(fbank, /*dim=*/0);
 
         fbank = at::divide(at::subtract(fbank, mean), stdev);
     }