The ornamental design for a positive airwaypressuresoundreduction device, as shown and described.
FIG. 1 is a side perspective view of a positive airway pressure sound reduction device in accordance with the claimed design;
FIG. 2 is an exploded side view of the positive airway pressure sound reduction device of FIG. 1 illustrating the internal structure of a cap assembly and hose interface;
FIG. 3 is a side view of the positive airway pressure sound reduction device of FIG. 1;
FIG. 4 is a top view of the positive airway pressure sound reduction device of FIG. 1 as seen from the cap end; and,
FIG. 5 is a top view of the hose interface as shown in FIG. 2.
The broken lines in the drawings illustrate portions of the positive airway pressure sound reduction device that form no part of the claimed design.