Yes.

FWIW, most of the noise in the Airbus is internal airflow due to the placement of the cockpit in the middle of the avionics cooling circuit. If in doubt, momentarily put it in the fumes/smoke evac config and you will be shocked at the difference. (As a side note, it’s also helpful when somebody drops a deuce in the fwd lav.)

Over the years Airbus has made minor “running changes” that naturally make the new ones quieter. And the ducts and insulation on the older ones never seem to get put back together perfectly after a heavy check. Over time the airplane gets noisier.