KVR Audio

BertKoor · Post by **BertKoor** » Wed Jul 26, 2006 7:54 am

20.000 lines of script, 30.000 samples

I'm glad my guitars come from the shop glued and bolted into one piece

metalsvinet · Post by **metalsvinet** » Wed Jul 26, 2006 8:32 am

of course wood matters

Chris Hein wrote: There are great sounding E-Guitars without any wood.

a guitar has no sound without a player

BertKoor · Post by **BertKoor** » Wed Jul 26, 2006 9:13 am

There are plenty of basses and some guitars made of graphite; no wood at all.

I'm sure the material of the body plays a big role in the whole process, but I'm also convinced it's very complex and it can't be approximated with an acoustic impulse. That's not how vibrations of the strings get to the element. But there is something like a feedback path from the strings through the bridge and body, back to the strings again.

egbert · Post by **egbert** » Wed Jul 26, 2006 9:37 am

With acoustic guitars you can create an impulse response by hitting the bridge with a small spanner (creating a wideband pulse analogous to the signal spikes or pistol shots used in generating impulse responses for acoustic spaces) and recording the acoustic output with a mic or a stereo pair. Some approximation to this method might work with electric solid bodies too - you could try recording the electric output of the guitar when it is excited in this way.

egbert · Post by **egbert** » Wed Jul 26, 2006 9:48 am

BertKoor wrote:There are plenty of basses and some guitars made of graphite; no wood at all.

I'm sure the material of the body plays a big role in the whole process, but I'm also convinced it's very complex and it can't be approximated with an acoustic impulse. That's not how vibrations of the strings get to the element. But there is something like a feedback path from the strings through the bridge and body, back to the strings again.

You are right about the complexity - no doubt there are non linear processes happening. There will be changes over time and with different notes and different levels of volume. What a static impulse will capture is some of the tone shaping effect of the system - this can work quite well wtih acoustics.

Max el Belga · Post by **Max el Belga** » Wed Jul 26, 2006 9:51 am

Another tip : use a contact-mike.

Max... .. .

BertKoor · Post by **BertKoor** » Wed Jul 26, 2006 10:16 am

Great suggestions so far. Although by hitting the bridge with a spanner I suppose you mostly capture the sound of the metal bridge (ping!) instead of the body resonance.

So suppose we wanna do some business instead of talking about it. dynamitec, how are we going to get the samples to you? Just post a link to an url with the sample here? PM you and send by mail??

egbert · Post by **egbert** » Wed Jul 26, 2006 10:28 am

BertKoor wrote:Great suggestions so far. Although by hitting the bridge with a spanner I suppose you mostly capture the sound of the metal bridge (ping!) instead of the body resonance.

Well, if you think about it, the strings only interface with the body through the nut and the bridge (and of course frets when the string is not open). So exciting the bridge into vibration is the main way that the body is set in motion if you are not plugged into an amp. If you have a loud amp nearby you will get acoustic feedback as well.

The initial impact is like the gunshot in a room reverb - you can trim it off the impulse response if you wish to.

e-guitar Body impulse respone? Help me!