What is "Boundary-Layer Microphone"?

Boundary-Layer Microphone

A microphone placed on the surface of a large boundary. At the boundary, the direct sound is doubled, which yields +6 dB of the sound pressure. The diffuse sound is also doubled, but due to the random phase, the sum only yields +3 dB. In this way, the microphone emphasizes direct sound over the diffuse sound, providing higher directivity of the microphone. The principle is also known as PZMTM (Pressure Zone Microphone), which is a trademark of Crown.

Related Products


BLM4060 Boundary Layer Mic

This mic solution is ideal for use in boardrooms, conference facilities and courtrooms. It is also a great solution for teleconferencing and other applications where excellent vocal pickup is required.

Read more and configure your mic

Be the first to hear about our new products, workshops, events, contests and more.