matlab_midi
代码说明：
从MIDI文件中读取多基频，用于检测多基频的提取，是一个很好的方法，大家可以借鉴一下(MIDI multipitch )
文件列表：
matlab_midi
...........\act_pitch.m,630,2010-01-13
...........\draw.asv,275,2010-01-19
...........\draw.m,275,2010-01-11
...........\enfram.M,372,2010-01-14
...........\enframe.M,373,2010-01-14
...........\envelope.m,1704,2010-01-11
...........\fft2gammatonemx.m,4180,2009-12-01
...........\getTempoChanges.m,793,2009-12-08
...........\ispecgram.m,1080,2009-09-07
...........\main.asv,5466,2010-01-24
...........\main.m,5466,2010-01-24
...........\matrix2midi.m,3558,2009-01-25
...........\midi2audio.m,1383,2009-01-25
...........\midi2freq.m,265,2009-01-25
...........\midiInfo.m,12719,2009-12-08
...........\pitch.m,2699,2010-01-24
...........\pitch_frequency.m,933,2010-01-17
...........\readmidi.m,9402,2009-01-25
...........\sacf.m,845,2010-01-17
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