IntelliVox® is PS Engineering's patented system automatically senses voice on each microphone, and adjusts the threshold continuously, depending on the ambient noise. This is truly the best of all worlds. PS Engineering's revolutionary IntelliVOX® intercom squelch protocol harnesses the computational power of microprocessors, and eliminates complicated squelch adjustments. In addition, by using independent, automatic microphone squelch circuits, extraneous cabin noise is minimized. IntelliVOX® means that the system will always be optimized, tailoring itself for different microphones, as well as variations in voice and sound levels in the cockpit.With IntelliVOX® you'll have seamless and clear communications.