[asterisk-speech-rec] Problem with background noise: Tips on Setting Options in Lumenvox.conf

[Tom [toms400]]

I've been having good results with the Lumenvox speech engine when
there is little to no background noise (i.e. people chatting in the
background, cars driving by when walking outside, etc.).  But, when
there is such background noise, the results are bordering on
unacceptable.  Ideally, I'd like the engine to not regard this noise
as speech input.

I've attempted to change some of the settings in lumenvox.conf,  and
was able to get some improvement over the default which was
incredibily sensitive.  But, I'm haven't gotten it to a point where
I'm comfortable.

Can anyone recommend settings for lumenvox.conf or at least a
systematic way of setting the various options?  I've played a little
with the tuner, but don't understand how I can use it in this case.

Thanks