Rather than suppressing noise like many competing technologies, CVC separates out the voice signals of interest using proprietary signal extraction techniques.

Residual echoes, primarily resulting from non-linearities in the acoustic transmission from the reference point to the microphone are reduced using autocorrelation methods, preserving full duplex conversation.

A sub-band adaptive filter models the linear transfer function between the reference signal and the microphone. The filter uses fast converging techniques to achieve robustness in fast-changing acoustic environments.The adaptive filter uses an auto adaptive ranging technique to deliver sub-zero dB near-to-far-end speech ratios at the microphone.