[Question] why I got different outputs?

[nezen]

First of all, thank you for sharing your work. I gave it a try, but got different outputs, do you mind taking a look? Thank you!

python dtmf.py ./not-perfect-example.wav
012344556778899

python dtmf.py -t 10 ./not-perfect-example.wav
3699

python dtmf.py -v -t 10 ./not-perfect-example.wav
0:00 .........................
0:01 .........................
0:02 .........................
0:03 3........................
0:04 .........................
0:05 ..6666...................
0:06 .........................
0:07 .............9.9.........
0:08 .....................