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Gras 47hc. Vehicle Interior Noise Testing GRAS Sound and Vibration The 47HC is a prepolarized low-noise microphone set which builds on GRAS' more than 20 years' of experience with state of the art low-noise measurement microphone systems. With a sensitivity of 450 mV/pa and a noise floor at 6.5 dB(A) or lower, it opens up for measure-ment levels down to about 10 dB(A).

With this set, the performance previously reserved for externally polarized setups is now available for CCP powered systems. With a sensitivity of 450 mV/pa and a noise floor at 6.5 dB(A) or lower, it opens up for measure-ment levels down to about 10 dB(A).

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The GRAS 47HC 1⁄2" CCP Low-noise Microphone System measures sound pressure levels down close to the threshold of human hearing With a sensitivity of 450 mV/pa and a noise floor at 6.5 dB(A) or lower, it opens up for measure-ment levels down to about 10 dB(A). It is thus generally suitable for sound-power measurements on even very quiet products.

Mardi Gras Carnival Vector Hd PNG Images, Mardi Gras Carnival Png Image. The 47HC is a prepolarized low-noise microphone set which builds on GRAS' more than 20 years' of experience with state of the art low-noise measurement microphone systems. Its very wide dynamic range permits measurements down to below 6.5 dB re

New Orleans heralds Fat Tuesday with Mardi Gras parades and celebrities. GRAS 47HC ½" 低噪音传声器系统可测量接近人类听力阈值的声压级。因此，它通常适用于测量非常安静的产品的声功率。它的动态范围非常宽，可以测量到低于 6.5 dB re With this set, the performance previously reserved for externally polarized setups is now available for CCP powered systems.