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Author Topic: Comparative Surround Recording  (Read 4229 times)

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Offline Kewl

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Comparative Surround Recording
« on: October 21, 2008, 02:44:28 PM »
Some of you probably know about the Comparative Surround Recording we did in 2007.

We have a new one: Comparative Surround Recording 2008. This year, we tested a Line Audio QM12i. Audio samples to be posted soon.

- Daniel

Offline John Willett

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Re: Comparative Surround Recording
« Reply #1 on: October 21, 2008, 04:03:46 PM »
It might be nice if you described the Soundfield correctly - it has four "sub-cardioid" (ie: wide cardioid) capsules and *not* cardioid capsules.  ;D

Offline Kewl

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Re: Comparative Surround Recording
« Reply #2 on: October 21, 2008, 04:54:14 PM »
It might be nice if you described the Soundfield correctly - it has four "sub-cardioid" (ie: wide cardioid) capsules and *not* cardioid capsules.  ;D

That is true for the original SoundField: is it true for the ST350 whose capsules are made by MBHO?

The new SoundField SPS200 uses MBHO KA 200 N capsules which are cardioids. The Core Sound TetraMic uses cardioid mics. Cardioid mics should be better for a tetrahedron assembly since they'll produce better S/N ratio in the XYZ channels. I'm pretty sure that subcardioid capsules were used in the original SoundField because of the difficulty of getting a cardioid pattern with such a small chamber behind the diaphragm.

- Daniel

Offline boojum

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Re: Comparative Surround Recording
« Reply #3 on: October 21, 2008, 06:55:09 PM »
Le grace de Dieux.  Manna from heaven!  Great!  I am toying with the DMS format ands have been interested in the SP200 (?) from SF.  The whole field of surround and the flexibility in decoding is very interesting to me.  More for the option of different stereo decoding options that 5.1.  And I am very interested in seeing how the SF does against the Schoeps.  Hurry, hurry, hurry.  Vite, vite, vite.  J'attend. 

You do ot post often, but the posts are great.  Thanks!       8)

PS - Snow by now, eh?  I lived a few years in Ville St. Laurent and remember the winters well.     :o
Nov schmoz kapop.

Offline Kewl

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Re: Comparative Surround Recording
« Reply #4 on: October 21, 2008, 07:04:13 PM »
PS - Snow by now, eh?  I lived a few years in Ville St. Laurent and remember the winters well.

Forecast of a mix of rain and snow, but nothing on the ground since it will stay above 0° Celsius. I lived in St-Laurent for the first 20 years  of my life... My mother still lives there.

- Daniel

Offline live2496

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Re: Comparative Surround Recording
« Reply #5 on: October 21, 2008, 09:00:41 PM »
Some of you probably know about the Comparative Surround Recording we did in 2007.

We have a new one: Comparative Surround Recording 2008. This year, we tested a Line Audio QM12i. Audio samples to be posted soon.

- Daniel

Interesting stuff Daniel. I'm looking forward to hearing the samples.

Gordon
AEA R88MKII > SPL Crimson 3 > Tascam DA-3000

Offline Kewl

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Re: Comparative Surround Recording
« Reply #6 on: October 21, 2008, 11:47:36 PM »
I am very interested in seeing how the SF does against the Schoeps

The DMS files will probably be included, but not processed. The DMS setup that was used is not isotropic, contrary to the SF or the QM12i. It was not either at the same distance than the other mics. The comparison is much less valid. The DMS was there because its owner wanted to try it. If it had been a standard DMS setup, it would be a valid comparison.

- Daniel

Offline boojum

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Re: Comparative Surround Recording
« Reply #7 on: October 22, 2008, 12:19:23 AM »
The DMS setup that was used is not isotropic, contrary to the SF or the QM12i. It was not either at the same distance than the other mics. The comparison is much less valid. The DMS was there because its owner wanted to try it. If it had been a standard DMS setup, it would be a valid comparison.

Daniel, I noticed that in the page on your  link.  Question is, why was it not tested as a standard (Mk4 [2] and Mk8)?  I would have thought that would make more sense.  Ah, well.  I will very much be interested in receiving the files and fiddling with them anyway.  I will not be able to fiddle with the SF files as I do not have the hardware.  Nor the cash to get it.  I am eagerly awaiting the results of your tests and being able to listen to the results.  I have a 5.1 playback, poor one, yes, for decoded files and if the differences are not too nuanced I will be able to perceive them.  I am thrilled you told us what you were up to.  Chapeau!
Nov schmoz kapop.

Offline Kewl

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Re: Comparative Surround Recording
« Reply #8 on: October 22, 2008, 11:06:26 AM »
Question is, why was it not tested as a standard (Mk4 [2] and Mk8)?  I would have thought that would make more sense.  Ah, well.  I will very much be interested in receiving the files and fiddling with them anyway.  I will not be able to fiddle with the SF files as I do not have the hardware.

The owner of the DMS setup is a film/tv sound guy (the Cantar recorder is a giveaway...): his surround setup is primarily for that use. As for fiddling with B-Format, I'm sure you can setup something on your computer.

- Daniel

 

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