“Yamaha makes a big deal of their new Surround:AI with their latest xx80 series AV receivers and 5200 series Aventage separates. The “AI” stands for Artificial Intelligence and Yamaha claims it analyzes and optimizes the DSP parameters for each scene of a movie five times per second. They claim their system instantaneously analyzes each scene in real time, focusing on distinct sound elements (such as dialogue, background music, ambient sounds and sound effects), and automatically optimizes the overall surround effect for your home theater. Yamaha goes on to tout that their Surround:AI system enhances the enveloping immersion of the soundtrack while also anchoring the center channel dialogue.
I put this system to the test initially while listening to two-channel music and the results were less than stellar. I noted a decrease in bass response and an overall collapsing of the soundstage for my front speakers. Switching to the Dolby Surround Upmixer (DSU) provided much better sonic results while also preserving the bass levels.”