This technology is basically detecting the algorithm of the noises that are made by the new Russian and Chinese submarines, such as electric generators, diesel engines, and sounds of crew moving throughout the submarine and operating equipment on the sub. The algorithm sound search systems will basically store patterns of sounds previously detected, and constantly search the proximity for sounds that match them, to detect and track Russian submarines.
This software can also be used with the underwater microphone systems that exist in NATO and around the world, controlled by the U.S. military.
Additionally, automatic pinging devices could be installed to automatically detect based on ping response if a new quiet sub passes over certain points or lines on the map. Basically these could be deployed as stationary devices and/or drones that detect and track the submarines. This will protect the U.S. and NATO subs from engagement. Additionally, the drones and stationary devices could use a type of shielding that doesn’t respond to the ping, and especially with underwater drones, this could keep the advantage of detection on the U.S. side because the underwater drones would not be seen by Russian / Chinese submarines.