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Author
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Topic: Cinema sound Calibration system
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 01-18-2019 03:01 PM
What I like about the D2 over others is that, aside from it all being calibrated right out of the box, you don't have to find an outlet in the theatre (Octacapture needs an outlet). The D2 self-normalizes to Mic 1 (the reference position) so if your mic 3, lets say, is nearest the screen, it will artificially contribute more to the average than the mics further away, despite the seats being further away more likely to have people watching the movie.
Note, for Atmos, you don't need SMART...the CP850/IMS3000 don't use SMAART, they use the Octacapture (or other ASIO based mic plexer). SMAART is just for you to see what it did once it was done with the auto-tune.
As Sean indicated, the SMAART analyzer can do a bunch of stuff that the D2 can (for B-Chains), like a Transfer Function, which can greatly aid in setting the proper delays/getting phase right. Then again, if you know what you are doing you can surmise some of that without it and if you have a tone generator and are setting delays at crossover, if you peak the response, you'll get the delay right.
Another issue with SMAART (for me) is it is that it is licensed to the computer, not the person so if you change computers, the software doesn't necessarily come with you (perhaps there is a transfer procedure). Since the D2 is hardware related, where ever the equipment goes so can the software that drives it. The current version of D2 can work with AZIO (started with version 2.1) so it is viable for an Atmos calibration.
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