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diff --git a/vosk-model-en-us-0.42-gigaspeech/conf/mfcc.conf b/vosk-model-en-us-0.42-gigaspeech/conf/mfcc.conf
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+--use-energy=false
+--num-mel-bins=40
+--num-ceps=40
+--low-freq=20
+--high-freq=-400
+--allow-upsample=true
+--allow-downsample=true