Creating impulses.....
- Thread starter Glenn Fricker
- Start date
DFGeneer
Member
I was thinking... wouldn't then the noise of the amp translate into impulse noise (or echo/reverb as it will appear into the time-domain)? Of course you can take care of the nose with a wave editor, but that will also add some artifacts to the impulse itself. Here the convolution technique of preamp/power amp tracks has some advantage, since the noise balances itself in the convolution process, even contributing in a positive way for the impulse response.
I guess I am going to compare the different methods just out of curiosity. However, the easiest one for me will remain preamp/miced tracks convolution.
LSD-Studio
HCAF crusher
I second the Mac-thing.
would like to create an impulse of my live-room...
what progs and plugins for mac?
would like to create an impulse of my live-room...
what progs and plugins for mac?
Altiverb has deconvolver on Mac, PC-version does not have it.
ps. OK I made some test: http://www.sneapforum.celtiaproductions.co.uk/deLuther/IR_test.rar
See description in info.txt inside archive.
LSD-Studio
HCAF crusher
kaomao
Member
It's really important if you use voxengo deconvolver to check silence and put at least a second , if not your file deconvolved is pretty useless, that's too short to be used.
thanks, was looking for something not as expensive though
Then use pulse aproach (without deconvolution) as stated above.
However this way will not give good response at high end. Highes slightly lower - see test.
Actually aditional silence just determine length of resulting impulse, so maybe you will not need impulse of length about second in case of cab.
In worst case created file will be zero length.
kaomao
Member
I tried this many times in voxengo's deconvolver. if I didn't add a 1 sec silence I had a file of about 30 byte that didn't react as an impulse when loaded in boogex.
While on Waves IR-1 I don't have to mind about this.
please consider i'm new to all this. until now i just have played my guitar but would like to get into recording and all that shit. however i have read and at least tried to understand a lot of this...
i've only read about the sine sweep impulse technique until now. but this approach above sounds even more interesting. wouldn't this even be more accurate (because it contains lot more frequencies/information)?
wouldn't it be best to play for an hour or so to gether as much information as possible?
wouldn't this be even more accurate than that nebula technique?
(i read the sticky about nebula but did not really get it.)
last but not least: why would you have to add the silence at the end of track 2?
thanks
i've only read about the sine sweep impulse technique until now. but this approach above sounds even more interesting. wouldn't this even be more accurate (because it contains lot more frequencies/information)?
wouldn't it be best to play for an hour or so to gether as much information as possible?
wouldn't this be even more accurate than that nebula technique?
(i read the sticky about nebula but did not really get it.)
last but not least: why would you have to add the silence at the end of track 2?
thanks
The-Zeronaut
Mixing..Y U SO DIFFICULT?
- Sep 24, 2007
- 1,794
- 5
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Bumping a 3 year old thread....seriously this is the second necrothread you bumped...LOOK AT THE DATE OF THE POST PLEASE
Clockwork
Bass playing guy.
*Six years old. Probably just as well to bump an older thread if you have questions relevant to it than start a new one entirely though.
yeah i know these are pretty old however i did not want to create a new thread because i could have been blamed not to use the search function
...also my questions are related to this specific post that DFGeneer did in here
...also my questions are related to this specific post that DFGeneer did in here
bryan_kilco
Member
botus99
Microphone Assassin
Probably not. It definitely won't have "a lot more frequencies", as a sine sweep covers every frequency (0hz-20khz) while a guitar amp won't have the deepest lows or highs that a sine wave will. Couple that with any frequency spikes in the amp, yadda yadda... sounds like a cheap way of making an impulse to me.
I guess, but that would lead to a MUCH bigger impulse file. It's a waste of time. Spending extra time to make the impulse in a still inefficient matter as opposed to running a sine sweep through it doesn't seem productive.
Nope. An impulse is static, I.E. sampled at one volume, so you will always be missing out on some dynamic information. Nebula samples it as many different dynamic levels as you like. Not to mention the dynamic harmonic distortion.
.... Not sure about that?
ok, well then the rest is clear. i thought the sine sweep just would have been one frequency constantly - i.e. at 500hz.
Voxengo Deconvolver`s sweep spans from 40 Hz or so, check this out:
http://www.ultimatemetal.com/forum/...olution-methodology-test-sample-impulses.html
http://www.ultimatemetal.com/forum/...olution-methodology-test-sample-impulses.html
that is pretty interesting deLuther. most of the time when listening and trying to distinguish real pwr amps+cabinets vs IRs in some shootouts or comparisons i pay attention to the low end and therefor can say what is what often. i wonder what sweep spans all the IR makers would have used out there.
however i was failing on the nebula vs ir vs real shootouts like most people
however i was failing on the nebula vs ir vs real shootouts like most people
