Impulses of vinyl record?

[esl]

Do some convo. impulses exists of vinyl records? Does this even make sense?

That is, I would load up an impulse of a vinyl record, and the processed sound would sound like it was coming from vinyl.

[dblue]

Dunno about an impulse based effect, but Izotope Vinyl is pretty nifty.

http://www.izotope.com/products/audio/vinyl/

[esl]

Dunno about an impulse based effect, but Izotope Vinyl is pretty nifty.

http://www.izotope.com/products/audio/vinyl/

Yes, thanks. I have that one already. It's cool....

But since people can do things like Voxengo Tape Bus, perhaps a "vinyl" version could be done? I would find that equally as useful.

[C00kie]

DIY vinyl "impulse":

* Dig out yer ole pick-up (as in record player)
* connect it through a suitable phono preamp to your pc
* get one vinyl disk with a scratch
* set the pc to record
* put needle next to the scratch
* cut out the "tick" exclusively with an audio editor.
-> this is your impulse to feed e.g. SIR !!

[Spyro]

Wouldn't do better if you record a noisy part instead of one tick?

The problem is, where to find a white noise section on a vinyl? perhaps some old work by Xenakis?

[jackson]

Find a solo'd crash cymbal on a record and scratch (wiggedy-wiggedy) over the sample a hundred times. It'll sound like white-noise and also pick up some lovely vinyl crackle in no time

[realmarco]

no i think a better way to have an vynil impulse is to, record a sine wav onto vynil(probably with the aid of someone who has those recordable vynil thinggie..cheap compared to pro pressing but good nonetheless

and then record the vynils sine wave into your computer and use that as the impulse files

if im not mistaken the best way to get the best impulse is to generate a sine wave and play it back thru the gear/space you want to emulate and the record the output of the gear/space back into the computer .. that way you have an impulse that has the whole frequency response of what the gear/space does at each frequencies...or lack there of

[Notron User]

I have the super vintage Opcode Fusion Vinyl plug-in.

[griels]

no i think a better way to have an vynil impulse is to, record a sine wav onto vynil(probably with the aid of someone who has those recordable vynil thinggie..cheap compared to pro pressing but good nonetheless

Nearly right.. In fact you just want a full spectrum 'click' sound for the best results. But yeah, you need to record the click onto vinyl first. Might make the needle jump about in interesting ways if it's loud enough too

[jackson]

no i think a better way to have an vynil impulse is to, record a sine wav onto vynil(probably with the aid of someone who has those recordable vynil thinggie..cheap compared to pro pressing but good nonetheless

and then record the vynils sine wave into your computer and use that as the impulse files

if im not mistaken the best way to get the best impulse is to generate a sine wave and play it back thru the gear/space you want to emulate and the record the output of the gear/space back into the computer .. that way you have an impulse that has the whole frequency response of what the gear/space does at each frequencies...or lack there of

Bah, my method's WAY more fun.

[Muzik 4 Machines]

i would try with a record i have both on cd and vinyl and sample a section on both and do the convolution thing(i dunno the name, acoustic mirror does it)
or better, buy a dj record with loops on it, like sine waves, white noise(meant to be scratched)

[aciddose]

i've said i wouldnt post on kvr anymore, so dont bother reminding me.

to answer the original question: no, it doesnt make sence.

an impulse responce can only be used to measure and reproduce a perfectly linear system. many of the effects involved with vinyl and audio reproduction from vinyl are non-linear and even time dependant.

short answer: not possible.

[Spyro]

wot?

they send a signal, record that stuff and you get a impulse...yes I admit to me this is more for the sake of experimentation (get cool sounds) than getting that perfect vinyl sound on an impulse to apply into a mix.

someone should do an impulse from a fart

[aciddose]

that would be called an impulse tail, or responce, although it wouldnt be related to in impulse in any way at all.

to take an impulse responce measurement, you need an impulse generator. generally you would generate a very fast pulse (maybe 1us or less, with 500ns rise/fall) and send that into the input of the measured device.

you then record the output, if digitally, at the highest sample rate possible. then you decide what rate is acceptable for representing and by compromise the actual responce. generally a good threshold rule could be output below -96db and above 20khz will be disregarded.

now, to recreate the responce of the system, you take input in the form of impulses, which for instance pcm happens to be. in the real world, pcm is output by generating flat areas between pulses, but the pcm stream is actually intended to represent infinitely fine pulses at the sample point. (and perfect regeneration of a pcm stream can be accomplished by using sinc pulses centered at the samples and running at half the target frequency)

with the simplist method of convolution, instead of using infinitely fine pulses, or bandlimited sinc, you would use the recorded impulse responce in place of every impulse in the pcm.

that means, the number of active impulses at any one time (for the basic convultion) is equal to the length of the impulse responce recording.