| 主权项 |
1. A security noise masking container for securing and isolating a plurality of communications devices, each of said devices comprising a microphone for detecting sounds in the surrounding environment, comprising:
(a) a container, comprising a sound absorbing material, said container having a plurality of supports, each of said supports being configured to receive a respective one of said devices and limiting the position of its respective device; (b) a container closure configured and dimensioned to close the container, the container closure comprising a closure sound absorbing material, a closure acoustic isolation volume between closure walls containing said closure sound absorbing material; and (c) an acoustic noise generator arranged within the interior of the container, said acoustic noise generator comprising a plurality of individual noise generators, each of which individual noise generators generates noise only when the presence of a device in its respective support is detected, said acoustic nose generator having a frequency and amplitude distribution suitable to acoustically mask the human voice and generating noise of an amplitude sufficient to drive circuitry receiving sounds detected by the microphone substantially toward saturation, whereby when
(i) a device with a microphone for detecting sounds from the surrounding environment is placed within the container,(ii) the container closure is closed and(iii) the acoustic noise generator is activated, the effectiveness of the device to receive useful sounds from the surrounding environment is substantially reduced. |
