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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.

If two sound waves are equal in amplitude but opposite in phase what is the net effect?

Two sounds waves that are equal in amplitude and opposite in phase will cancel each other out at the point of contact. This is the basic theory for noise cancellation, commonly used in headphones or for reducing cabin noise in a vehicle. These sound sources are coherent.