I have a Chrysler New Yorker landau and I.

Can't really hear it over a computer. Given the recent repair work, I'd start by looking at the front disc brake splash shields to see if one got bent and is rubbing on the rotor. If it is, you can just pull it back by hand.

There is a tool you might be able to borrow or rent from an auto parts store that borrows them called the "Chassis Ear". It is a set of six microphones, a switch box, and headphones. You clip the microphones to suspect points, then drive around while listening with the headphones. You can move the microphones around to zero in on the source of the noise. Be aware that many mechanics have never seen or even heard of this tool. Suspension and alignment mechanics use it to find rattles, squeaks, and other noises.