The PESQ score is nan

[BilalDendani]

Hi everyone.
I am asking about the meaning of nan PESQ score.
After some successful compute of PESQ score for my speech samples I got the following error for the residual samples

anaconda3/lib/python3.6/site-packages/pypesq-1.0-py3.6-linux-x86_64.egg/pypesq/init.py:16: RuntimeWarning: invalid value encountered in true_divide
deg = 0.999*deg/np.max(np.abs(deg))
Thank you.

[vBaiCai]

please confirm the deg or ref signal is not an all-zero array.

[WangQian0107]

hello everyone.
I am asking about the ImportError: No module named pesq_core. I can't find the module, can you tell me where I can get the module.
Thanks.

[radkoff]

I too see a nan PESQ score. My audio is 3 seconds at 16k (48000 sample points), confirmed non-zero.