• Register
  • Help
Results 1 to 6 of 6

Topic: Looking for sampled instrument impulses for violin, viola, cello, & bass

Share/Bookmark
  1. #1

    Looking for sampled instrument impulses for violin, viola, cello, & bass

    Hello, I’m developing physical models of the instruments in a string quartet. The modeled bow and string are coming along well, but I now need to model the wooden bodies of the instruments. The normal way to do this is to convolve the string’s sound with an instrument’s impulse. This is the same thing a convolution reverb does with a room's impulse.

    So I’m looking around for instrument impulses, but I haven’t yet found any. I could perhaps go to my children’s school and record my own. But there are difficulties with that. I’d have to convince the kids to let me whack their bridges with a force hammer, and set up an acoustically dead recording area, and hope that the student-level instruments actually sound good. That’s a lot of hassle.

    So does anyone know where I might find a collection of sampled instrument impulses? These aren’t notes, but the sounds that instruments make when struck lightly on the bridge. Noisevault has a string bass impulse in it, but it’s pretty dull-sounding.


    Btw, the model is being created in Reaktor, and is being discussed at http://www.native-instruments.com/fo...ad.php?t=67790.

    Thanks.

  2. #2

    Re: Looking for sampled instrument impulses for violin, viola, cello, & bass

    Quote Originally Posted by ChetSinger View Post
    Hello, I’m developing physical models of the instruments in a string quartet. The modeled bow and string are coming along well, but I now need to model the wooden bodies of the instruments.
    The only ones I have ever been able to find are these violin and viola ones made available some time ago by Angelo Farina:

    http://pcfarina.eng.unipr.it/Public/IMP-RESP/Violins/

    His home page is here:

    http://pcfarina.eng.unipr.it/Public/Papers/list_pub.htm

    And here is one of several papers he co-authored on the making and use of these impulses:

    http://pcfarina.eng.unipr.it/Public/...079-ISMA95.pdf

    Perry Cook of Princeton led a project to create a much more elaborate series of body impulses, but he never made them available to the public. Some of them found their way into the Bodilizer VST:

    http://www.ijdata.com/products.html

    I can't seem to find Perry Cook's papers on how he produced his IRs any more, but anyhow, here's his home page:

    http://www.cs.princeton.edu/~prc/

    There were a couple or three violin IRs included with Kontakt, as well.

    BTW, I just love your Reaktor ensembles, especially the oboe patches in Silverwood.

    Greg

  3. #3

    Re: Looking for sampled instrument impulses for violin, viola, cello, & bass

    Greg, thanks for the info. I've downloaded the impulses and will try them out tonight. They're a fantastic find.

    I've seen Angelo's paper before, and scanned through it briefly, but I never studied it closely because I didn't think the impulses were available. I'll take a good look at it now!

    I'm glad you like Silverwood. Building that was a labor of love.

    Thanks much!

  4. #4

    Re: Looking for sampled instrument impulses for violin, viola, cello, & bass

    OK, I've tried them out, and they really do shape the sound of the bow/string model so that it sounds like an actual violin or viola. Way cool.

    Some of them are a little noisy or tinny, but I have a good noise-removing tool, and Angelo's paper describes how he boosted the bass to get a deeper sound, so I'll copy that.

    Thanks much for pointing me to these impulses.

    I'm still looking for cellos and basses, if anyone knows where any can be found.

  5. #5

    Re: Looking for sampled instrument impulses for violin, viola, cello, & bass

    Greg, I thought I'd let you know how this experiment turned out.

    I downloaded the impulses from Prof. Farina's site and used the SIR2 realtime convolution software to "play" a physically modeled bowed string through the Klotz violin body:

    http://www.plunder.com/Serenade220-1...oad-158990.htm

    I'm very pleased. With very little work on my part, the PM bowed string now sounds remarkably violin-like. And that snipped was played on a computer keyboard, with no added expression.

    That last note is kind of hokey, since it's a D3, and violins can't play that low. But if a violin could play a D3, it might sound something like that, heh.

    EDIT: Here's a subsequent sound snippet, where I tried to soften the attack and include some string crossings from B down to G where the bow's direction didn't change:

    http://www.plunder.com/Serenade-v223...oad-159304.htm

  6. #6

    Re: Looking for sampled instrument impulses for violin, viola, cello, & bass

    Quote Originally Posted by ChetSinger View Post
    Greg, I thought I'd let you know how this experiment turned out.
    Thanks. I've been watching your NI thread, so I've got you covered.

    Fantastic work!

    Greg

Go Back to forum

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •