The unidirectional dynamic microphone is inherently sensitive to mechanical vibration and therefore requires an effective shock mount. Conventional means of shock mounting, as well as the development of the mechanopneumatic shock mount, are discussed with emphasis on equivalent circuit analysis. The mechanopneumatic shock-mounting system employs an adjustable balancing network to provide vibration cancellation over a relatively wide frequency range. A system is described that has been successfully optimized for a high-quality unidirectional dynamic microphone to attain a significant improvement in mechanical vibration performance without compromising acoustical performance.
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