Librosa: Change MFCC Overlap Percentage

Created on 23 Mar 2017  路  3Comments  路  Source: librosa/librosa

Hello, I was curious if there was a way to increase or decrease the percentage overlap between frames when calculating MFCCs for an audio file using librosa.feature.mfcc. After reading through the documentation for a while I do not see a way to do this but thought I would create an issue to ask. Currently implementing a speaker recognition program and wanted to play around with the overlap percentage to see if it could improve my results. Thanks in advance.

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picture AKBoles

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Great, thanks! That helps a whole lot.

picture AKBoles on 23 Mar 2017
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Overlap is controlled by the hop_length parameter in all spectrogram-like functions. The default frame length is 2048 (for STFT operations), and the default hop is 512, which results in 75% overlap.

bmcfee picture bmcfee on 23 Mar 2017
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Great, thanks! That helps a whole lot.

AKBoles picture AKBoles on 23 Mar 2017
🎉2 👍1

25ms 10ms, 2048 512,,,those how to build relationships

zkailinzhang picture zkailinzhang on 20 Jun 2018
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