Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Help with DSP Selection for multichannel movies.

THX makes a filter that "mimics" a cinema Screen infront of the speakers to dampen the added high frequency at cinmea's so the sound comes natural infront of the screen after the sound has passed through!


Here are some very good info with graphs of the filter and how they work
http://entertainment.howstuffworks.com/thx4.htm

Here are some from Audioholics

"Editorial Note About THX ReEQ� by John Dahl of THX

ReEQ was developed by THX's Tomlinson Holman in response to a request from the movie sound editors and mixers at Lucasfilm's Skywalker sound. The mixers found that when they listened to master tapes of their work on their home systems they sounded consistently too bright and edgy compared with what they heard in the movie dubbing stage where the masters were created. Movie dubbing stages are set up and calibrated to sound exactly like good movie theaters and vice versa. It's important to movie sound artists that they create the sound track while listening to the same system as the theater audience. In the movie biz this is known as accurate venue to venue translation.

In a movie theater the audience sits a long way away from the speakers, a theater is acoustically absorbent and the theater speakers have the high frequencies turned down slightly. In a home you sit close to the speakers, the room is acoustically live and the speakers do not have the high frequencies turned down. So you can see that a soundtrack recorded in a theater would sound bright when played back at home. The THX ReEQ filter compensates precisely for the response difference between a perfect movie theater and a perfect home theater."

rest can be read here: http://www.audioholics.com/reviews/processors/integra-research-rdc-7-1/thx-overview-and-scorecard