The most famous voice in college basketball will be silent for at least the next month … Dick Vitale just announced he's been ordered to undergo "4 weeks of total voice rest" following vocal cord surgery.

Dickie V revealed the doc's orders on his Facebook page Wednesday morning … saying the Tuesday operation on his throat went well, but he's got a long way to go before he's back talking hoops on TV again.

"[The doctor] feels optimistic that if I follow his plan (which I will)," Vitale said, "that he will get me back on courtside to do what I truly love talking college hoops during the 2022-23 season."

Vitale — who's also currently in a battle with cancer — was diagnosed with the vocal cord issue just a few weeks ago … revealing the problem would force him out of calling games for the rest of the 2021-2022 season.