EXL auto accords already have noise cancellation. What the Crosstour has is different - Active Sound Control - which reduces high as well as low frequency sounds and also claims....here's all the blurb from Honda....
The Accord Crosstour receives the first-ever application on a Honda-brand product of the Active Sound Control (ASC) system that is more sophisticated compared to the Active Noise Cancellation™ (ANC) system used on the Accord Sedan and Coupe models with the technology. Whereas ANC dealt specifically with the elimination of low decibel noise entering the cockpit, the new ASC system has a much broader range including the elimination of unwanted high frequency noise. In addition, the ASC system is linked to throttle position and engine RPM to provide a more quiet cockpit during normal cruising while allowing desirable parts of the engine sound to be heard more during higher RPM, higher speed driving.
ASC not only improves sound cancellation but also works throughout the entire engine RPM range whereas the previous ANC system only worked to cancel engine booming noise up to 2000 RPM. Moreover, ASC is specially tuned for various levels of "effect" generated at different throttle positions: during low RPM, ASC delivers a quiet cabin and during high RPM the ASC is tuned to allow a more refined and harmonizing note to enter the cabin.
The ASC system operates whenever the engine is running, regardless of whether the audio system is on or off. There are two microphones mounted in the headliner- one in the front and one in the rear. The microphones capture low-end drivetrain frequencies entering the cabin, and send a signal to the ASC unit. The ASC unit then creates a precisely timed reverse phase audio signal that is sent to an amplifier, which powers the door speakers and the subwoofer.
The ASC system dramatically reduces the booming sound of the engine exhaust. In the frequency range below 100 hertz, Active Sound Control results in an impressive reduction in noise level. Moreover, the system controls high-frequency and middle-frequency noise attenuation. The system also contributes to the engine's expanded VCM cylinder deactivation range by counteracting more of the less desirable sounds associated with certain ranges of cylinder deactivation."
I suspect it'll be added to the sedans and coupe autos (doesnt work with manuals) at MMC. I wish there was a switch to turn it off so you could tell how could it was (I guess you could disconnect all the speakers!).
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