本规范涵盖了动圈、降噪动态麦克风的一般要求。本文所述产品用于氧气和防毒面具以及头戴式麦克风（吊杆安装和防护罩安装）。这些部件可在规定的地面和高度的中高噪声环境中提供通信，并符合既定的美国空军灵敏度标准（见6.1）。

This specification covers the general requirements for moving coil, noise-canceling dynamic microphones. The products described herein are used in oxygen and gas-masks, and headset-microphones (boom-mounted and protective-shield mounted). These parts provide communications within moderate to high noise environments, at ground level and altitude, as specified, and meet established United States Air Force sensitivity standards (see 6.1).