I can prevent this from happening by removing gnome-orca from my system.
I also found an ask ubuntu post with apparently the same problem.
http://askubuntu.com/questions/34340/orca-starts-running-when-i-open-
sound-preferences/38102#38102
** Also affects: gnome-orca
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/773450
Title:
sound preferences opens speech-dispatcher
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