A magnetic resonance apparatus includes a magnet unit that contains a high-frequency antenna unit, and a housing casing unit enclosing the magnet unit. The housing casing unit includes a side casing unit, a front casing unit, and a rear casing unit. The side casing unit, the front casing unit, and/or the rear casing unit includes at least one casing part. At least one boundary region of the housing casing unit is disposed between the different casing parts. The housing casing unit includes at least one membrane unit that contains a barrier for the propagation and/or transmission of sound waves and that covers at least one boundary region between two casing parts.