The ornamental design for a microphonesupporter, as shown and described.
FIG. 1 is a perspective view of a microphone supporter, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a perspective view of the microphone supporter shown in a state of use;
FIG. 9 is an exploded view of the microphone supporter; and,
FIG. 10 is a perspective view of the microphone supporter shown in another state of use.
The broken lines shown in FIGS. 1-4, 9 depict portions of the microphone supporter that form no part of the claimed design. The broken line showing of hardware and a circular cage in FIGS. 8-10 depict environmental structure that forms no part of the claimed design.