Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 4
Communication Breakdown
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification
Company Policy; Environment - Non Weather Related; Human Factors; Procedure
Aircraft X was inbound to land Runway XXL. When I issued a turn northbound the pilot questioned the heading.  The session is muffled during replay due to the requirement of wearing mask.  This creates an undue safety issue when each transmission is time dependent. Since all of our positions are separated by more than 6 feet that mask [should] not be required when working position unless it is an associated hand-off.
TRACON Controller reported a pilot questioned a heading clearance and cited a possible muffled transmission due to wearing a face mask as a factor.