Rock gongs are large stones struck with smaller stones to create a metallic resonating sound. In addition, the resonator may contain elements to suppress mode-hops of the resonating wave. The tuned keys are tied atop resonating gourds. In males, the abdomen is largely hollow and used as a resonating chamber. This is done in order to produce highly resonating sound. Martenot's resonating "palme diffuseur" loudspeaker to treat the vocals. These sonic blasters deal damage by resonating an object at a certain frequency. It uses two mirrors to establish a resonating cavity. Hitler also coupled this with the resonating projections of his orations for effect. Additionally, the swim bladder functions as a resonating chamber, to produce or receive sound. This forms the hand into a resonating chamber for the clave. The solid-body electric guitar is made of solid wood, without functionally resonating air spaces. This splits Titan's atmosphere into two separate resonating chambers. The resonating bond is broken and a carbocation resonating structure results. And that head is resonating, which creates a momentum that isn't helpful.