Worse result on singing voice

[ericwudayi]

I try notebook E7 exercise, and try to resynthsize the singing voice, and I found that no matter how I tune the parameter, it seems cannot have a good resynthesis result.

Parameter I used: M = 1501 N = 4096

t = -90 minSineDur = 0.07 nH = 100 minf0 = 100 maxf0 = 700 f0et = 4 harmDevSlope = 0.01 stocf = 1

Original Voice: https://drive.google.com/file/d/1amctapCKdpE0CB5qVpl1uE7t4rK69O6H/view?usp=sharing

Resynthesis Voice: https://drive.google.com/file/d/1LksF6_XFq3r4iTm-hHcv7OhbJzd7MBfW/view?usp=sharing

I am wondering where is the problem. Thank you very much!