The bass drum makes a low, boom sound when the mallet hits the drumhead. Mesh heads used in V-Drums kits today are made by the American drumhead company Remo. Some drummers muffle the sound of a drum by putting a cloth over the drumhead. A frame drum is a drum that has a drumhead width greater than its depth. In 1986 he knows Remo Belli, (inventor of the plastic drumhead). Most modern congas have a staved wooden or fiberglass shell, and a screw-tensioned drumhead. They were commercialized by the drumhead company Remo Inc., of North Hollywood, California. The frequencies at which a drumhead can vibrate depend on its shape. Figure 9 shows a filter using drumhead mode resonators. Usually the single drumhead is made of rawhide or man-made materials. Vere convenes a drumhead court-martial. It executed eighty of them after drumhead court-martials. In 2018, Tom's Guide rated "The Drumhead" one of the 15 best episodes featuring Picard. The Ensign was borne from the drumhead by Observer Lieutenant Pollock, VC. This bather is wearing a red dress, and has a drumhead for a face.