October 2012
Intermediate to advanced
368 pages
10h 33m
English
Content preview from The Microphone Book, 2nd Edition
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CHAPTER 2
BASIC SOUND TRANSMISSION AND OPERATIONAL FORCES ON MICROPHONES
INTRODUCTION
All modern microphones benefit from electrical amplification and thus are designed primarily to sample a sound field rather than take power from it. In order to understand how microphones work from the physical and engineering points of view, we must understand the basics of sound transmission in air. We base our discussion on sinusoidal wave generation, since sine waves can be considered the building blocks of most audible sound phenomena. Sound transmission in both plane and spherical waves will be discussed, both in free and enclosed spaces. Power relationships and the concept of the decibel are developed. Finally, the effects of microphone dimensions on ...
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