File list (Check if you may need any files):
speech processing\example1\00000005_10kHz.wav
speech processing\example1\00000005_16kHz.wav
speech processing\example1\00000005_8kHz.wav
speech processing\example1\00000005_l6kHz_fir.wav
speech processing\example1\00000005_l6kHz_iir.wav
speech processing\example1\draw_waveform.m
speech processing\example1\fir_lp.m
speech processing\example1\iir_lp.m
speech processing\example1\test_l6k_fir4k.wav
speech processing\exp1\exp1_1.m
speech processing\exp1\exp1_2.m
speech processing\exp1\test_16k.wav
speech processing\exp1\test_l6k_fir3k.wav
speech processing\exp1\test_l6k_fir4k.wav
speech processing\exp1\test_l6k_fir5k.wav
speech processing\exp2\ah.wav
speech processing\exp2\exp2_1.m
speech processing\exp2\exp2_2.m
speech processing\exp2\exp2_3.m
speech processing\exp2\speeded_up.wav
speech processing\exp2\test.m
speech processing\exp2\test_16k.wav
speech processing\example1
speech processing\exp1
speech processing\exp2
speech processing