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Impulse Responses for Zwolle Dry Set

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zurek

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Impulse Responses for Zwolle Dry Set

PostFri Feb 22, 2008 6:34 am

My friend Karel Kvaca created a collection of artificial impulses suitable for the addition of convolution reverb to the model of the church organ called Zwolle Dry Sample Set by Sonus Paradisi. The impulses are available for each division. More on our web pages.
It is even possible to download the demo version of the impulses (downsampled to 16bit/44.1kHz and truncated after 3 seconds). Full version of the Zwolle IR's set is available for download too after ordering.

I also added some midi-performance demosusing the dry set and the convolution reverb.
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Fokko

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PostFri Feb 22, 2008 8:10 am

Hi Jiri,

Are there special audio setup requirements for using the different impulses?
I have a common stereo setup, one pair of monitors with sub.
Or is it a matter of personal preferences whether to choose for front, rear or omni impulses?

Greetings,

Fokko Horst
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zurek

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PostFri Feb 22, 2008 8:37 am


Most things on this Earth are a matter of personal preference, I think. However, when we designed these impulses, we were thinking of using the Front + Rear together on a surround setup (at least 4 audio outputs required), while the omni impulses are very good for a stereo setup, creating rich space around your head.


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Eric Sagmuller

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PostTue Apr 29, 2008 6:34 pm

Hi Jiri,

I'm really impressed with the IR performance demo's. But I'm jut wondering one thing. The dry sample set is Mono, so how do you get true stereo IR's from that, or are they somehow derived from the wet sample set? Or is it a synthetic stereo image?

Thanks,
Eric
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zurek

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PostWed Apr 30, 2008 1:16 am

In general, IR's are not related to samples in any way. The use of the convolution reverb is not limited to the sample set, you may convolve anything in world you want. Therefore, I think that your question mixed different things together.
1) Stereo image of the Zwolle Dry sample set: the samples are mono, but they are panned accross the compass to match more or less the real "panning" of the pipes in the Zwolle organ. The original instrument has divided windchests into left and right side (C and C#) but different divisions have different "panning" of the pipes. This was respected in the sample set. So, even without any reverberation at all, you still get stereo sound, as if the organ was in your room and the pipes were spread in all the corners of the room.

2) the IR's on my web pages are pure artificial, therefore, they are not related to the Zwolle church in any way. However, when designing these artificial impulses, we measured the response of the church itself. The measured real impulse response was not quite usable for the convolution, but at least we have got precise information about the acoustics of the space. This was then regenerated synthetically, so that the artificial impulse responses I offer are reproducing faithfully the behavior of the Zwolle church, but in "perfect" conditions so that the result is more suitable for the convolution.
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Eric Sagmuller

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PostWed Apr 30, 2008 6:01 am

Thanks Jiri. This makes total sense to me now.

Eric
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Eric Sagmuller

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PostThu May 08, 2008 6:42 pm

Hi Jiri,

When you explain how to use Reaper and Pristine Space are you using a 32 bit operating system across the board as Reaper is only 32 bit? Somewhere I though Martin or someone explained how to be able to use a 64 bit operating system and 64 bit Hauptwerk, but then the 32 bit Reaper.

Thanks,
Eric
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Stefanussen

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PostThu May 08, 2008 8:03 pm

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Eric Sagmuller

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PostFri May 09, 2008 2:02 pm

Thanks Stefanussen. Haven't heard form Jiri yet though.
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toplayer2

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PostMon May 12, 2008 4:42 am

zurek wrote:...the IR's on my web pages are pure artificial


Were these IRs created using RaySpace's "export impulse responses feature"?

Thx,
Joe
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zurek

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PostWed May 21, 2008 5:42 am

No, it was surely not the software you mention.
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zurek

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PostWed May 21, 2008 5:46 am

To Stefanussen:
I am sorry to overlook your question. However, it is always safer to write to me an e-mail, then you get the answer very fast.
The isntallation of Reaper on 64bit machine is very tricky, very good hints may be found here:

http://forum.hauptwerk.com/viewtopic.php?t=2779
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Stefanussen

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PostWed May 21, 2008 6:15 am

Thank you very much for the link, I will carefully review that thread.

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