In this paper, the author introduces the principle of Head Mounted Display (HMD) and 3d Auditory System by practice.

本文结合作者实践，介绍自制头盔显示器(HMD)及三维音响系统的原理。

youdao

When you are immersed in a virtual game using a head-mounted 3d display, you cannot just take it off to fiddle around with control buttons.

当你通过头戴式3d显示设备沉浸在一款虚拟的游戏中的时候，你需要不停地控制按键，不能够把它摘下来。

youdao

What our man Pascal Brisset did is design a Linux system around a Gumstix Overo Fire computer-on-module, a Vuzix VR920 head-mounted stereoscopic 640 x 480 display (complete with 3D tilt sensor and 3D magnetic compass), WiFi, and Bluetooth modules -- the whole shebang resides in (and on) the eyewear, just the thing for secure telepresence and augmented reality applications (or just extra-private web browsing).

ENGADGET: Homebrew head-mounted Linux system for telepresence, looking silly