Trinnov room correction is a direct competitor to Audyssey room correction. Trinnov technology is being added to receivers such as Sherwood Newcastle and only requires a unique microphone to let the receiver and its processing do their audio magic.
Consumers like the do-it-yourself nature of Trinnov room correction, which doesn't need a calibrator to get the most from your system.
Another room correction competitor is Anthem Room Correction, or ARC.
Read a review of the Sherwood Newcastle R-972 receiver, which has Trinnov room correction.