Patent ID: 11968495
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A loudspeaker comprising:
an enclosure including an opening;
a driver, disposed at the opening in the enclosure, which is configured to be electrically driven; and
a constrained acoustic modulator (CAM) including a membrane disposed across the CAM, wherein a perimeter of the membrane is attached to one of a frame of the CAM or a surface of the enclosure, and an entirety the membrane is flexible,
wherein a first airtight void is formed in the enclosure by at least: a side of the driver facing inside the enclosure and a first side of the CAM,
wherein a second airtight void is formed in the enclosure by at least: at least a portion of an inner surface of the enclosure and a second side of the CAM, and
wherein the first airtight void and the second airtight void are airtight with respect to each other, regardless of motion of at least a portion of the CAM.