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In Reply to: 5.1 to 3 channels of stereo AES converter? posted by sendler on September 9, 2006 at 11:35:02:
Hey Sendler:You can always go with a multichannel digital output soundcard like a Lynx AES16 which has multiple AES/EBU outputs... Some of RME's older cards might fit the bill too.
Follow Ups:
The lynx card would work but the next part of the puzzle would be a decoding program for DVD-V. That might need another card as well if it is even possible for DVD-A or SACD with their closed access architecture which are all chip based to prevent copying. There must be some editing programs, though they will probably be sealed hard drive units that cost 5grand such as the Meridian. Hi end lables would be better served to follow Chesky and release their multichannel on DVD-V.
Cannot you use PowerDVD or WinDVD to playback multichannel files? (They CAN be used as media players and play more than just VOB/AOB files....)I think these programs WILL map the correct channels to a multichannel card (have not used them in a while sorry) but it's worth a shot.
WinDVD/PowerDVD are both really excellent software players, and they have come a looooong way in the audio department since their inception.
If you are using soundcard for the output, you don't even need dcx2496 as you can use software to do the crossover. Even more savings!More info here http://www.duffroomcorrection.com/wiki/Main_Page
Yes - but he wants 6-channels for DVD-V playback downmixed to stereo pairs of AES/EBU. He would need to go with an open-architecture BRUTEFIR solution to use PC based crossovers I think - Foobar crossover plugins only work for 2-channel audio.I think this is why he is resorting to doing the crossover functions in the Behringer DCX2496 - which will also serve as DACs.
All he would need then is a nice passive 6 gang stepped attenuator and he's away to the races.
Honestly, for linear phase FIR crossovers the Aedio ones are really cool, but for the bandpass filter you are FORCED to have the same tap setting for highpass and lowpass filters, which is contrary to many schools of thought on how to set these types of filters up. (Often, you want a different tap setting for each midband filter.)
Anyways, I am not sure that PC crossovers are going to be an easy fix for multichannel operation - and outboard digital x-overs and still likely the best bet!
Sendler buddy - chime in and let us know where your thoughts are heading with this! Very interesting topic for me anyways.
I came across a very nice white paper on digital cross over design herehttp://www.acourate.com/
Very very powerful (and thorough) program for developing FIR filters for BRUTEFIR. I've looked at BruteFIR and it seems you need to be closer to a programmer than an audiophile to get the thing up and running. You need this compiler and that compiler and this and that and these programming guys make it sound almost trivial.I really don't want to go out and get a degree in computer science to be able to use the filters generated by Acourate.
I'd really like to see a complete solution - it would cost more, but an in-one-box solution that not only creates the filters, but has the software and firmware (even hardware) to execute them.
Acourate only builds filters for BruteFIR. If you have BruteFIR up and running, to me, Acourate would be a no-brainer.
Yes. you are quite right! BruteFIR is quite difficult to setup. It took me quite a while!! Kind of like using DOS Vs Windows.
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