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Microphones and Acoustics

Frequently Asked Questions

Get your most commonly asked acoustics questions answered.

Section I: Definitions and Terminology
Section II: Microphone Recommendations
Section III: Calibration and Testing
Section IV: Specification Clarifications
Section V: Specialty Microphone Applications
Section VI: Maintenance and Handling

If you don’t see the answer to your question, call our 24/7 SensorLineSM 716-684-0001 to speak with an application engineer or visit Ask the Acoustics Experts.

Do I need an adapter to perform a single point field calibration check on the PCB® model 130B40 surface microphone?

An adapter is not required. Using a CAL250 (or a pistonphone with a 1" orifice) is recommended. Before performing a calibration, ensure that the microphone has stabilized in the environment where it will be used. Then, install the black rubber fairing pad onto the model 130B40 surface microphone to help ensure a proper seal. Place the microphone and faring pad on a flat, level surface. Turn the handheld calibrator upside down, and place the 1” (25mm) opening onto the faring, centered around the microphone sensing element. Press down slightly to ensure a seal and to minimize outside noise.  Then perform the calibration.

Do I need an adapter to perform a single point field calibration check on the PCB® model 130B40 surface microphone?

An adapter is not required. Using a CAL250 (or a pistonphone with a 1" orifice) is recommended. Before performing a calibration, ensure that the microphone has stabilized in the environment where it will be used. Then, install the black rubber fairing pad onto the model 130B40 surface microphone to help ensure a proper seal. Place the microphone and faring pad on a flat, level surface. Turn the handheld calibrator upside down, and place the 1” (25mm) opening onto the faring, centered around the microphone sensing element. Press down slightly to ensure a seal and to minimize outside noise.  Then perform the calibration.