Creating Impulses?

[MKS]

Please suggest the best tutorial for creating impulses?

Thanks

 

[abigor731]

http://www.guitarampmodeling.com/viewtopic.php?f=32&t=1745

 

[outoftune]

http://www.guitarampmodeling.com/viewtopic.php?f=32&t=1745

damn... not fast enough

 

[Metaltastic]

Also, one thing I've noticed about making impulses (copied this from another thread) - since you're sending the sine wave out to the amp, through the amp/cab/mic, back in to the interface, and then recording it, there's naturally gonna be some latency, and since Voxengo Deconvolver doesn't take this into account, I've noticed that the lower I set the latency on my interface when sending out/recording the sine sweep, the better the impulses sound in the end! Just something to keep in mind

 

[MetalMiller]

Also, one thing I've noticed about making impulses (copied this from another thread) - since you're sending the sine wave out to the amp, through the amp/cab/mic, back in to the interface, and then recording it, there's naturally gonna be some latency, and since Voxengo Deconvolver doesn't take this into account, I've noticed that the lower I set the latency on my interface when sending out/recording the sine sweep, the better the impulses sound in the end! Just something to keep in mind

Damn! That information came to late...

 

[TheDude]

Open the impulse files in your favourite wave-editor and trim the start. Piece of cake.

 

[Metaltastic]

Hmm, yeah, don't have a wave-editor

 

[TheDude]

http://en.lmgtfy.com/?q=Free+Wave+editor

 

[Wild Hades]

I can be wrong, but isn't the "MP" function on Voxengo Deconvolver made just to solve this issue?
I've always intended it as "Match Phase"...

EDIT:

MP Transform enables minimum-phase transform that takes place after deconvolution. Sometimes when you capture a non-linear equipment like speakers and amplifiers enabling MP transform will create much more realistic impulses, without pre-echo. This option can be also used with reverbs. In the end, you will get a perfectly timed reverb with zero initial delay and without pre-echo. However, this is not suitable if the left and right channels of the reverb impulse have different initial spike timings.

Guess it's something different....

 

[deLuther]

From my experience MP Transform makes sound even worse. Just try different modes of Deconvolver to find sound close to original. It`s easier to edit response.
Recently I dont use deconvilver at all - I`m using pulse aproach that comes from definition of impulse response. Just sending pulse (one sample of maximum amlitude) and record response.
Here is my comparison: http://malefice.fatal.ru/sound/IR_test.rar
I`m posted at this forum (if I`m remember correctly), some time ago, but at different location, I think.

 

[TheDude]

MP = Minimum Phase

Yeah it cuts the beginning perfectly, and makes the IRs almost totally in phase, BUT using phase differences as a part of a sound, like the dual SM57 technique is impossible with MP.