Acoustical seal system for doors

A door system with sound absorption in flanking paths, comprising:

• a door frame provided in an opening in a wall extending upward from a floor;
• a pair of swinging doors hung in the door frame, wherein an air passageway is provided between each joint between sides of the doors and the door frame, between an adjacent pair of the sides of the doors, and between the sides of the door and the floor;
• extending along at least half of the length of the each of the air passageways, a cavity facing a corresponding one of the air passageways;
• and
• sound absorbing material at a depth of at least 0.5 inches positioned in each of the cavities,
• wherein a first subset of the cavities is provided in housings on the door frame and a second subset of the cavities is provided in housings attached to one or more of the sides of the doors.

A door assembly adapted for sound absorption, comprising:

• a door pivotally supported on a wall;
• a door frame including an upper member extending along an upper side of the door between the wall and the upper side of the door and further including a side member extending along an outer side of the door between the wall and the outer side of the door;
• and
• an acoustical seal system including:
• a first air passageway extending linearly between the upper member of the door frame and the upper side of the door;
• a second air passageway extending linearly between the side member of the door frame and the outer side of the door;
• a first housing in at least one of the upper member of the door frame and the upper side of the door, wherein the first housing includes a cavity in fluid communication with the first air passageway;
• a second housing in at least one of the side member of the door frame and the outer side of the door, wherein the second housing includes a cavity in fluid communication with the second air passageway;
• a first volume of sound absorbing material positioned in the cavity of the first housing;
• a second volume of sound absorbing material positioned in the cavity of the second housing;
• and
• a third housing mounted to a lower side of the door, wherein the third housing comprises at least one cavity filled with a volume of sound absorbing material and wherein the at least one cavity faces a third air passageway between the door and a floor below the door,
• wherein the door assembly further comprises a second door pivotally mounted to the wall to be positionable in a closed position whereby an inner side of the second door faces an inner side of the door with a fourth air passageway between the door frame and the second door, and
• wherein at least one of the inner sides of the door and second door includes a cavity, filled with sound absorbing material, that is in fluid communication with the fourth air passageway.

A door system with sound absorption in flanking paths, comprising:

• an opening in a wall;
• a moveable door positionable within the opening, wherein the door when in a closed position defines an air passageway between an edge of the door and an edge of the opening;
• at least one cavity facing the air passageway;
• and
• sound absorbing material positioned in the cavity,
• wherein the cavity includes at least one divider wall dividing the cavity into two or more spaces for receiving the sound absorbing material, and
• wherein the at least one divider wall has a solid body.