Most array microphones have a fixed "listen" direction, severely limiting a speaker's range of motion. But the Acoustic Magic Voice Tracker™ Array Microphone automatically locates and electronically steers toward you when you talk, leaving you free to move around during a speech or teleconference, thus letting you use visual aids or pace with ease. You can also use the Acoustic Magic Voice Tracker to control your home automation system whether you're home or not. The included USB adapter lets you take full advantage of HomeSeer Automation Software: Plug the adapter into your computer's port, and use voice commands to control your home automation system. Improved Listening Power The Voice Tracker works like a headset to improve signal-to-noise ratios in two ways. First, its digital signal processor creates a listening beam that focuses on the talker and spatially filters noise from other directions. Second, its proprietary noise reduction algorithms filter out background noise and reverberations that are present in the acoustic environment. Several talkers can take part in teleconferencing, thanks to the Voice Tracker, since it rapidly steers to the individual participants as they put their two cents in. The Voice Tracker also has a special feature that desensitizes the microphone to sounds coming from preselected directions, so even with construction work going on next door, your voice will come through clearly. With no moving parts, the Voice Tracker is rugged, reliable, and easy to use. No software needs to be loaded, and there is no drain on your computer's processing capacity. USB Cable Included for Easy Connection to PC or Laptop A 3.5mm cable is included, but the included USB adapter allows you to avoid having to plug your microphone into a 3.5mm jack. Many laptops do not have a line in jack, or the output of the Voice Tracker may be too strong, causing clipping, which will ruin speech recognition. The USB adapter is specially modified to reduce the signal by a factor of 10 (as well as digitizing the signal), eliminating the risk of clipping. The USB adapter also eliminates the need to have a soundcard. The Acoustic Magic Voice Tracker and Two-Way USB Adapter for Voice Tracker are also available to be purchased separately.