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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.

What is the importance of the vent hole position in a preamplifier?

The vent hole should be in the sound field whenever possible and operators must be careful not to cover the vent hole during mounting.  This only affects low frequency response. But large changes in static pressure may be problematic if a microphone is not properly vented. A side vented microphone is recommended for measuring low frequencies within a cavity or tube where there is a large pressure differential between the pressure inside and outside the cavity.

What is the importance of the vent hole position in a preamplifier?

The vent hole should be in the sound field whenever possible and operators must be careful not to cover the vent hole during mounting.  This only affects low frequency response. But large changes in static pressure may be problematic if a microphone is not properly vented. A side vented microphone is recommended for measuring low frequencies within a cavity or tube where there is a large pressure differential between the pressure inside and outside the cavity.