Mobile soundproof enclosure with changeable room geometry and optional ventilation noise cancelling device

A mobile soundproofing enclosure comprising:

• a) A light weight frame;
• b) A cover made out of flexible sound absorbent or sound deadening sheet material;
• c) corner sound traps made with flexible sound absorptive sheet material, wherein the sound traps are independent from the booth itself and can be movably connected to the adjacent walls of the enclosure;
• d) corner bars, serving to support the sound traps, which in conjunction with the sound traps can be set in various positions to allow for a plurality of user defined internal shapes of the enclosure, wherein the internal geometry of the enclosure can be changed by the user while the enclosure is fully assembled and fully functional to achieve better acoustic performance and sound diffusion;
• a) a detachable ventilation noise cancelling device made with flexible sound absorbing sheet material, wherein said device can be folded away flat or in an otherwise compact manner and then easily restored to the original shape and functionality when needed.