I'm not sure if this is specific to the Google Voice extension in chrome or to just Google Voice, but I cannot find a setting in either, and neither can I find any information about setting this online.
Earlier this year, I started getting audible notifications that my Google-voice activated phone (via Sprint) was receiving a call. Most of the time I get the notification before the phone actually rings. The ringtone is a bit annoying. Well, my wife has the same setup and somehow she has a different (less annoying) ringtone, so I'm wondering if Google just randomly picks something or what? We both have Google Apps accounts, so there's no difference there. Any ideas?