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Old 9th February 2012, 10:20 AM   #1
kappen is offline kappen  Denmark
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Default Windows based crossover/convolver

Hi.

Im new in this pc based convoler world and have only used dedicated DSP's so far. Im interrested in building a pc based crossoversystem.

My requirements:

1. 4/6 Channels
2. Convolving of my own impulseresponses from matlab (.txt / .dat) (FIR FILTER)
3. SPDIF output would be nice (for all channels)
4. Work with winamp or similar good player software
5. Windows based

Is this possible and/or does it exist?
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Old 23rd February 2012, 03:50 AM   #2
qusp is offline qusp  Australia
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allocator

nuff said
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Old 23rd February 2012, 08:08 AM   #3
kappen is offline kappen  Denmark
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Hi.

Thanks for your answer.

Af far as i can read on their website, allocator only allows for IIR filters.

I need to use my own custom impulseresponse (FIR filter) as filter.
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Old 23rd February 2012, 09:57 AM   #4
Henckel is offline Henckel  Denmark
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Convolver a convolution plug-in

It will do FIR filter

Note Using HDMI to a surround receiver/preamp is a lot cheaper than getting multiple SPIF/AES out
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Old 23rd February 2012, 10:24 AM   #5
qusp is offline qusp  Australia
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Quote:
Originally Posted by kappen View Post
Hi.

Thanks for your answer.

Af far as i can read on their website, allocator only allows for IIR filters.

I need to use my own custom impulseresponse (FIR filter) as filter.
nope, it will do either. look more closely.
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Old 23rd February 2012, 10:31 AM   #6
Boden is offline Boden  Netherlands
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Probably a very dumb question (and a bit off topic too) for PC-Audio affecionados, but is there any reason why one could (better) not use a standard quality sound cards such as e.q. Creative, Asus or M-Audio cards with Allocator or Sound Easy?

Kind regards,

Eelco
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Old 23rd February 2012, 10:49 AM   #7
kappen is offline kappen  Denmark
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qusp -> perhaps im just not looking carefully enough, but i really cant find anywhere on allocators website where it states that it can be used with custom FIR coefficients.

Henckel -> i will have a closer look on that one, do you use this yourself or are you familiar with the software?

Boden -> The most soundcards (even the cheap ones) today are far better than recorded material you play on them in terms of noise, dynamic range and distorition: they are also better than the rest of your audio chain including amplifier, speakers and so on.
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Old 23rd February 2012, 02:21 PM   #8
qusp is offline qusp  Australia
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actually it might be his linux implementations for the sandy bridge chipset that use the FIR, but i do know he certainly is a fan of FIR brutFIR to be more specific. you can actually find some info here on the forum that allows you to basically run his most modern digi XO applications for free, using calls that directly access the sandybridge chipset's vector engine to do the calcs. i'll see if i can find some links for you tomorrow, its getting late here
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Old 23rd February 2012, 02:42 PM   #9
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The easiest approach at this point may be JRiver V17. It has recently added a full convolution engine that can be used in both music and video applications. I haven't tried it yet, but assuming it works as expected it would seem to be the most attractive setup under Windows. It may have somewhat higher hardware requirements than something like a BruteFIR/Linux solution, though.
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Old 23rd February 2012, 02:49 PM   #10
kappen is offline kappen  Denmark
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dwk123 -> That sounds very appealing. I need to take a look on this JRiver tonight.
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