KVR Audio

dusted william · Post by **dusted william** » Mon Jan 15, 2007 3:15 am

I'm going to create my own stadium IR, who knows how to do it?

Any tips? Any hints? I've googled, but someone here may point me in a direction I hadn't thought.

Does Voxengo Deconvulver work well?

I've got the mic's, I've go the recorders. Now all I need is the permission, access, khow. (the know how is the hardest part)

thanks

dw

BertKoor · Post by **BertKoor** » Mon Jan 15, 2007 9:05 am

There used to be a good tutorial on www.soundvault.com, but even the WebArchive WayBackMachine can't get to that content anymore.

Here is another tutorial: http://emusician.com/tutorials/emusic_acting_impulse/
I skimmed through it, seems a good one for starters...

GreyLion · Post by **GreyLion** » Mon Jan 15, 2007 9:51 am

Rayspace, maybe?

Mutant · Post by **Mutant** » Mon Jan 15, 2007 2:53 pm

http://noisevault.com/nv/index.php?opti ... &Itemid=33

Mutant · Post by **Mutant** » Mon Jan 15, 2007 3:01 pm

dusted william wrote:I'm going to create my own stadium IR

For such a big space a starter gun may be not loud enough - use a BIG firecracker.

Rangtangtang · Post by **Rangtangtang** » Mon Jan 15, 2007 3:03 pm

starting pistol or a PA system....

BertKoor · Post by **BertKoor** » Mon Jan 15, 2007 3:09 pm

Mutant wrote:http://noisevault.com/nv/index.php?opti ... &Itemid=33

Right: it was at the NoiseVault dot com, not SoundVault...

dusted william · Post by **dusted william** » Mon Jan 15, 2007 5:32 pm

Well I want to sample the PA system, to sound like an announcer at a sports stadium.

dw

BertKoor · Post by **BertKoor** » Mon Jan 15, 2007 5:36 pm

Well, you set up your recording gear, play an impulse through the PA, and Bob's yer Uncle!!

dusted william · Post by **dusted william** » Mon Jan 15, 2007 5:40 pm

I know all that, but I don't know what is the best impulse, I don't know how to get it prepared for Verb's and such. The books mentioned here will help.

Thanks everyone!

dw

Mutant · Post by **Mutant** » Mon Jan 15, 2007 6:01 pm

dusted william wrote:I don't know what is the best impulse

The best impulse is a white noise bang/crack, but in your situation it would be extremely hard to create a white noise bang loud enough for a stadium with a full range speaker so you will have to use some kind of an explosive (a starter gun or a firecracker).

Try placing an additional mic close to the source and look at its frequency analysis then use a different pop/bang/crack and mix them all to create an impulse with equal power across all frequencies then apply the same equalization settings to the final response recorded on your main mic.

Just an idea (maybe a stupid one).

VariKusBrainZ · Post by **VariKusBrainZ** » Tue Jan 16, 2007 7:42 am

darn, theres a VST that is designed to create IRs. It was made in synthedit. Cant remember the name or the dev

waiting man · Post by **waiting man** » Tue Jan 16, 2007 9:11 pm

the gun/firecracker option is fine for random results, and will need tons of adjustment.

since speakers are on location and dw wants to sample'em too, the sweep approach should give more detailed results.
..hoping that the pa system and speakers are in good shape. the sweep touches such extreme frequencies, and bad speakers might react bad, rattling, etc. (a special sweep can be made to avoid this, though)

but then again, being the stadium a higly diffused and complex(and big) shaped space the IR will result in an undefined "splash", no matter how "not perfectly enough" you might capture it.
just thinking and wasting time to end my cigarette...

dusted william · Post by **dusted william** » Tue Jan 16, 2007 9:34 pm

I'm going to go for the sweep, I just have to find a stadium, probably indoor. I then have to convince whomever is in charge of sound to let me do it.

I definetly want the sound of an announcer coming through the PA system.

I have a feeling there has got to be some people who would let me.

Mutant · Post by **Mutant** » Tue Jan 16, 2007 10:08 pm

waiting man wrote:since speakers are on location and dw wants to sample'em too, the sweep approach should give more detailed results.

I think that for capturing a natural reverb of the stadium the sound source must come from only one spot so he would need to move all the speakers to the grass.

But if you just want to capture that characteristic sound of sports announcer coming from many speakers at the same time then use the sweep method William.

Who knows how to create an IR?