jAudio Logo

jAudio 1.0 Feature Appendix

Get jAudio at SourceForge.net. Fast, secure and Free Open Source software downloads

Fraction of Low Energy Frames

A feature extractor that extracts the Fraction Of Low Energy Windows from window to window. This is a good measure of how much of a signal is quiet relative to the rest of a signal.

This is calculated by taking the mean of the RMS of the last 100 windows and finding what fraction of these 100 windows are below the mean.