| 摘要 |
A headset has an earcup (11) with a front opening adapted to be adjacent to the end of the user, a driver (12) inside said earcup, and a cushion (15) formed with an ear opening (15A) to accommodate the ear of a user and is formed with a plurality of openings (16A) around the opening (15A). The plurality of openings (16A) add acoustically the volume of said cushion to the volume of said earcup and enhance passive attenuation. A microphone (17) is inside the earcup adjacent to said driver. Active noise reducing circuitry (30-35) intercouples the microphone and said driver to provide active noise reduction. The cushion (15) with its plurality of openings (16A) furnishes additional damping to help smooth the audio response at the ear of a user and control stability with the headset off the head. |
