uSpeech library

After I downloaded the _SpeechAdvancedTraining, I got a value of silent of 300 something, f1 as 32 & f2 as 115. So eventually selected 70 (in between f1 & f2 values). Even edited the uspeech.h with these values.

Now the LED test's not working! :~
My LED PIN always remains high.
Tried calibration.pde & it gives a Phenome value as "f' always, & voice strength value keeps on increasing automatically.
I tried to experiment with different valuse of f, u etc in the phenome.cpp also. eventually got confused.
help required