Measurement Microphones: Fundamentals, Construction and Operation

Microphones are one of the most used transducers in almost all industries and devices - from phones, computers, and sound systems to hearing aids, they touch many aspects of our daily life. This booklet will give you a comprehensive overview of the design features and operating principles of measurement microphones, relevant standards and a selection guide to help you choose the right microphone for any application. It gives an answer to fundamental questions such as: "What is a measurement microphone?" and "How to use a measurement microphone?"

CONTENTS

1. What is a measurement microphone?
2. Microphones construction and principle of operation
3. Difference between "externally polarized" and "prepolarized" microphones
4. Microphone sets: Preamplifiers and power supplies

 

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MEASUREMENT MICROPHONES
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Brüel & Kjær measurement microphones are well known and respected worldwide because of their reputation for accuracy, stability, and trustworthiness.

It takes a wealth of experience to build microphones that are accurate, reliable, and long-lasting. The Brüel & Kjær design engineers and craftsmen have gained this experience by working at the frontiers of microphone technology for almost three-quarters of a century. The vast catalog of ideas developed over this period has made the Brüel & Kjær range of measurement microphones the most comprehensive available.

What is a measurement microphone?

DID YOU KNOW?

In the 1980s, Brüel & Kjær developed and released for sale professional audio microphones. These were based on the measurement microphone designs but in a form more “studio friendly.” They are still available and highly regarded today.

 

Microphones construction and principle of operation

Construction

Principle of operation

Difference between "externally polarized" and
"prepolarized" microphones

Microphone sets: Preamplifiers and power supplies