The ornamental design for a soundabsorbentpanel, as shown and described.
FIG. 1 is a front perspective view of a sound absorbent panel according to the invention;
FIG. 2 is a rear perspective view of the sound absorbent panel according to the invention;
FIG. 3 is a front perspective view showing the sound absorbent panel of FIG. 1 juxtaposed with its right side adjacent to the left side of a sound absorbent panel arranged so that the opposite end view of FIG. 2 is shown in dashed lines, wherein the opposite end view shown in dashed lines forms no part of the claimed design;
FIG. 4 is a left side view of the sound absorbent panel of FIG. 1;
FIG. 5 is a right side view of the sound absorbent panel of FIG. 1;
FIG. 6 is a top plan view of the sound absorbent panel of FIG. 1;
FIG. 7 is a rear view of the sound absorbent panel of FIG. 1;
FIG. 8 is a front view of the sound absorbent panel of FIG. 1 and is a mirror image of FIG. 7; and,
FIG. 9 is a bottom plan view of the sound absorbent panel of FIG. 1.