A machine for generating acoustic white noise comprising: an oblate housing comprising a top portion and a bottom portion each of which have an inner surface and an outer surface, wherein said top portion and said bottom portion are configured to securely engage each other via an attachment means displaced along a rim of at least one of said top portion and said bottom portion to form a cavity defined by said inner surface of said top portion and bottom portion; said housing further comprising a curved wall , said wall comprising a cylindrical frame displaced concentrically within a cylindrical band , said wall further comprising a plurality of openings , wherein a rotational displacement of said band relative to said frame determines the dimensions of each of said openings; a motor enclosure displaced within said housing, said motor enclosure comprising a motor secured therein, and said motor enclosure further configured with a means to isolate noise and vibration ; a fan mounted on said motor, said fan comprising a concave central dome and further comprising a plurality of blades , wherein said central dome is shaped to partially wrap around said motor enclosure and each of said blades comprise a first end integrally fused to said cylindrical frame and a second end forming a blade tip ; a rigid shell configured to envelop said housing, wherein said shell is rotatably connected to said housing to adjust the size of more than one opening of the plurality of openings in the machine simultaneously thereby altering one or both of the amount of airflow sheared by the openings and the frequencies of sound which resonate within the machine; a power source and a circuit board electrically connected to each other, said power source and said circuit board electrically connected to said motor to regulate the operation of said fan; and a physical control means disposed on said top portion adapted to effectuate manual regulation of the operation of said fan. an oblate housing comprising a top portion and a bottom portion each of which have an inner surface and an outer surface, wherein said top portion and said bottom portion are configured to securely engage each other via an attachment means displaced along a rim of at least one of said top portion and said bottom portion to form a cavity defined by said inner surface of said top portion and bottom portion; said housing further comprising a curved wall , said wall comprising a cylindrical frame displaced concentrically within a cylindrical band , said wall further comprising a plurality of openings , wherein a rotational displacement of said band relative to said frame determines the dimensions of each of said openings; a motor enclosure displaced within said housing, said motor enclosure comprising a motor secured therein, and said motor enclosure further configured with a means to isolate noise and vibration ; a fan mounted on said motor, said fan comprising a concave central dome and further comprising a plurality of blades , wherein said central dome is shaped to partially wrap around said motor enclosure and each of said blades comprise a first end integrally fused to said cylindrical frame and a second end forming a blade tip ; a rigid shell configured to envelop said housing, wherein said shell is rotatably connected to said housing to adjust the size of more than one opening of the plurality of openings in the machine simultaneously thereby altering one or both of the amount of airflow sheared by the openings and the frequencies of sound which resonate within the machine; a power source and a circuit board electrically connected to each other, said power source and said circuit board electrically connected to said motor to regulate the operation of said fan; and a physical control means disposed on said top portion adapted to effectuate manual regulation of the operation of said fan. <EOS>