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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.

Why are there two sensitivity specifications on my PCB® microphone calibration certificate?

The two sensitivity specifications represent the same thing. The first specification is open circuit sensitivity in reference to 1 V/Pa and the second is the converted result in mV/Pa. For example the PCB®  377B02 is -26 dB re 1 V/Pa which equals 50 mV/Pa. 

Why are there two sensitivity specifications on my PCB® microphone calibration certificate?

The two sensitivity specifications represent the same thing. The first specification is open circuit sensitivity in reference to 1 V/Pa and the second is the converted result in mV/Pa. For example the PCB®  377B02 is -26 dB re 1 V/Pa which equals 50 mV/Pa.