A feature of two-way audio equipment, namely, a combination headset and microphone with the capability to enable and disable the microphone audio pickup as a function of the relative position of the microphone to the headset and to the user's face

A feature of two-way audio equipment, namely, a combination headset and microphone with the capability to enable and disable the microphone audio pickup as a function of the relative position of the microphone to the headset and to the user's face