Resonance generators of acoustic vibrations are developed from viscous heat-conductive compressible gas vibration research; and from specific applicable inventions that are intended to generate sonic and ultrasonic frequency mechanical vibrations at the expense of the store of steady energy of compressed gas, using the resonance properties of acoustic cylindrical cavities. The cylindrical shape provides the monochromaticity of the generating signal, picking off the cavity’s axis while exiting through the axial slots on its surface. The resonance phenomenon affords optimal pumping of the fixed frequency oscillating power to the sonic screened system. The resonance generators convert the steady mechanical energy of gas to sound or ultrasound vibrations by a highly simple original method. In comparison with currently available generators (mechanical, electromechanical, electromagnetic, electrodynamic, hydraulic, pneumatic, etc.), the proposed acoustic generators are considerably easier to produce, operate, and maintain, and are more reliable, highly competing with them in efficiency. The most closely related design in conception is the radial siren, containing coaxially mounted cylindrical stator, rotor with openings and drive. With the important strengths of the prototype, among which are construction simplicity, high reliability, and large unit power, its weaknesses are bandwidth-duration product, operation instability, and moderate efficiency. This can be improved by laying the resonance condition into the device foundation.