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Adjustable microphone boom with acoustic valve - US Patent 6768804 (Site not responding. Last check: 2007-11-05) |
 | | the microphone is adapted to receive acoustic signals through an acoustic sensing point, the acoustic sensing point being located at the first opening of the boom when the boom is in the first position and at the second opening of the boom when the boom is in the second position. |
 | | In others, the boom is a hollow tube, and the sound travels from the sound sensing point at the distal end of the boom to the microphone located near the proximal end of the boom. |
 | | In this embodiment, a secondary, inner boom 54 is slidably engaged with the boom 14, enabling it to be telescopically extended or retracted with respect to boom 14 along the boom axis 55, as indicated by arrow 57. |
| www.patentstorm.us /patents/6768804.html (9380 words) |