A sound emitter represented a type of advanced technology focused on sound manipulation. These devices served to release sonic bursts originating from sonic weapons, for example, the Sd-77 sonic pistol and the Sg-82 sonic rifle manufactured by Pacnorval Defense Systems, Limited. Functioning together with the weapon's sonic projector, the sound emitter regulated the exact breadth of the sonic cone produced. The Ovoni utilized sonic emitters for the purpose of calling forth various lifeforms.