getting Orca back

[Glenn / Lenny]

Hi All,
After the latest of my attempts I tried from here, I still have no Orca, and sound tests yield nothing either.
I hear pops while Ubuntu is starting.
Anyone know how to get the audio back to defaults so I may get this thing working again?
I'll have to type into a terminal without speech, hoping I get no typos.
Thanks for any assistance.
Glenn
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