4942 | Sound fields and adaptation microphone cartridges for specific environments, industries, and measurement conditions
Hottinger Brüel & Kjær
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Model Description
■ 1/2 inch 6Hz to 16kHz uneven polarized diffusion field Micro hon The biased 4942 diffusion sound field 1/2 inch microphone is suitable for general random incidence measurement and standard noise measurement based on ANSI standards. Because it is a bias, it can be connected to CCLD input. ■ Usage examples ・ Measurement of spread sound field ・ In indoor measurement ・ Humid environment ■ Dissemination sound field usage of microphone The diffusion sound field microphone is also called a random incident microphone, but is designed to flatten the frequency response in a sound field where the sound waves reach simultaneously from all directions. Therefore, it can be used not only in the reverberation room, but also in a space with diffusion and a sound field consisting of multiple sound sources. Actual examples include indoor and interior of the room where sounds are reflected by walls, ceilings, and objects. ■ robustness Type 4942 microphones have the robustness that can withstand the 1m drop test of IEC 68-2-32. ■ Calibration If you attach a 1/2 inch adapter DP-0776 to the 4228 type pistonphone, you can proofread the sensitivity at 250Hz. The actuator response can be measured with the actuator UA-0033. The random incident response can be obtained by adding a type -specific random incident correction to the actuator response. Please note that this microphone is not suitable for measurement of sound pressure sound field.
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Part Number
4942
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Hottinger Brüel & Kjær
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