Arseniy Gorin

You can find an example with kws phrase here https://github.com/cmusphinx/pocketsphinx/blob/master/swig/python/test/kws_test.py...

What does "1e-40" means? It's threshold that you can tune for each word or phrase...

For your task it is better to use keyword phrase list instead of LM http://cmusp...

In case of singing, training new model is essential. Yes

In case of singing, it is essential. Yes

To handle garbage sounds the easiest solution could be using the keyword list http://cmusphinx.sourceforge.net/wiki/tutoriallm...

OK, now it's clear. To be honest, I do not know who was the author of this project...

It is getting difficult to follow your question. You asked how to compute WER. For...