1. – Dual D-Sub ports accept analog video component signals up to HD.

2. The output of a noise canceling first or second order electret gradient microphone in a very high noise environment has background noise attenuated and certain phonemes shaped to improve intelligibility by means of a slow action automatic gain control circuit (22) which matches dynamic range of the microphone (10) with dynamic range of the following communication channel, and a fast action automatic gain control circuit (24) in parallel with the first circuit, that reshapes puff noise into plosive, fricative and affricative speech component signals that produced the puff noise.