Mel filter bands found by psychological and instrumentation experiments) Freg lower than 1 KHz Filter has narrower bands and output Mel filters in linear scale Higher frequencies have larger bands and in log scale) · More filter below1KHZ 05 Less filters above 1Khz 03 1000010002000300040005000600700a900 Frequency(Hz) Feature extraction v 9a http://instructl.cit.cornelledu/courses/ece576/finalprojects/f2008/pae26_jsc59/pae26jsC59/images/mElfilt.pngMel filter bands (found by psychological and instrumentation experiments) • Freq. lower than 1 KHz has narrower bands (and in linear scale) • Higher frequencies have larger bands (and in log scale) • More filter below 1KHz • Less filters above 1KHz Feature extraction, v.9a 11 http://instruct1.cit.cornell.edu/courses/ece576/FinalProjects/f2008/pae26_jsc59/pae26_jsc59/images/melfilt.png Filter output