[Mcllovin]

Hi

So I recently installed an aftermarket navigation system (from ebay.. works great tho, I was on a budget since i'm a college student)
but the only issue I have is that,
I got really used to my stock parking sensor sound and now the sound is this high beep that almost doesn't even change in levels so it's basicaly kinda useless.

Is there a way to have the stock sound back?
I had the professional radio system before the aftermarket one.