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 mechano-pneumatic shock mount, are discussed with emphasis on equivalent circuit analysis. The mechano-pneumatic shock mounting system employs an adjustable balancing network to provide vibration cancellation over a relatively wide frequency range. The paper describes a system 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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