Office pod and a soundproofing wall structure

An office pod enclosing a soundproof workspace inside of the pod, comprising:

• a wall structure formed of a sound absorbing element and a skin layer, said skin layer forming an exterior surface of the office pod followed by the sound absorbing element facing an interior of the office pod, wherein the skin layer has a coincidence frequency outside of a predetermined human speech frequency region defined based on frequencies at which human speech has the greatest intensity.