Adaptive Compliant Trailing Edge

Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=34&t=172425
Hawkeye07 wrote:"FlexSys says its smart materials technology, which can be retrofitted to existing planes, can increase fuel efficiency by between 5% and 12%,
and reduce noise on take-off and landing by up to 40%."
OK, so I'm a broke dique retired aircraft mechanic whose elevator doesn't always hit the top floor so tell me how is this flex wing going to reduce noise
on take offs and landings by up to 40%. Is it going to slap the engine upside the nacelle and tell it to shut up or what? I don't recall ever having a pilot
write up a flap for being noisy. Maybe a flap jack screw would whine once in a while but... I think it's more PR B.S.