2021年9月3日 星期五

Laser metrology speeds microphone calibration

Laser measurement can calibrate a precision microphone as well as traditional techniques, according to the US National Institute of Standards and Technology (NIST). Such calibration is required in standards laboratories so that the microphones in sound-level meters and hearing aid testers, for example, can be set-up at the other end of the calibration chain. Traditional ...

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