an espeak phenomena

[Linux for blind general discussion]

I'm using speakup with espeak and espeakup, and over the past
couple of weeks I've noticed an odd phenomena: on occasion, the speech sounds gravelly. If I continue to
use speakup the gravelliness or roughness of the voice becomes
worse and worse. But If I stop the speech and wait a few seconds, the speech smoothes out and I
can use speakup extensively with no problems, at least until the problem recurs a few days later.

Does anyone have  a clue what's going on?

Thanks
Rudy Vener

-- 
Rudy Vener
Website: http://www.rudyvener.com
Twitter: https://twitter.com/RudySalt