yading@10: function step2(arg)
yading@10: 
yading@12: [x,fs,bits] = wavread(arg);
yading@12: %x = resample(x,44100,fs);
yading@10: y = extractInstrumental(x,hamming(2025),4096,'baby.txt');
yading@12: wavwrite(y,44100,'instrumental.wav');