Shepard tone played by an instrument?

    Aug 06 2008 | 7:52 pm
    I’ve got a question about the Shepard Tone object/patch of CNMAT or just the Shepard tone in Max/MSP. What I want is to hear the sound of, for example, a violin or a saxophone and not that output of the sinusoids. I really don’t know I’ve that’s possible. What I just want, is to play the sound of an instrument, like a violin or sax, in the tones of Shepard (or Risset). Could someone help me? I’m really a newbie with Max/Msp.
    (working with max/msp 4.5 on a Windows XP computer)

    • Aug 07 2008 | 2:06 pm
      On 07 Aug 2008, at 00:53, raja wrote: > > It's a pretty detailed process to try and explain and there are > many ways to do this but since I haven't done this, all I could > tell you is that you might be able to do this either by taking a > sample of a violin, etc. looping a small section of it in order to > achieve the timbre of the violin and then applying that to a > shepard-tone patch somehow or perhaps even try it within some kind > of FFT algorithm that would also achieve shepard-tone-like-pitch- > shifting. Maybe someone else here who has already created this will > answer your post, though, you never know... > > It is definitely possible, though. Best of luck. >
      hm... while it is certainly possible to use a sound with any combination of partials to feed the glissando machine, the auditory illusion of the ever rising/falling glissando will only work with a sound whose partials are spaced apart by the same interval - preferably an octave (partials 1, 2, 4, 8, 16 etc.).
    • Aug 08 2008 | 5:55 am
      Nicolette schrieb: > Could someone help me? I'm really a newbie with Max/Msp.
      Max expertise alone wouldn't help in this case. The shepard tone uses a specific overtone structure and mixture to get you into this illusion. The original is sliding a fundamental and its overtones while fading in the lower and fading out the higher partials. As soon the highest partial is silent, you fade it in again on the lower end... On option is to record a real slide over two octaves of the given instrument (hard to play for the sax...) and create at least three copies, which have to be in an exact overtone relationship with the others. Main problem would be to play a steady slide, which has exactly the same interval/time over the complete 2 octaves. The other option is to create the move with a gizmo~ pitch shift, that would allow to do an exact move, but will introduce some artefacts to the sound...
      Good luck and post the result...
      -- Stefan Tiedje------------x------- --_____-----------|-------------- --(_|_ ----|-----|-----()------- -- _|_)----|-----()-------------- ----------()
    • Aug 11 2008 | 10:23 am
      Mmmm..thanks for the comments and advises, but I think I gone skip this idea. My knowledge of Max/MSP is not so far jet. But if someone want's to work out this "problem"/idea, be my guest :).
    • Aug 12 2008 | 10:58 am
      You might have success with a cross-fade in the frequency domain. I believe this was essentially the technique used to recreate the castrato voice in Farinelli.
    • Oct 08 2008 | 10:48 pm
      I made some plugins that do this. There is a shepard tone ring modulator, flanger, phasor and pitch shifter:
    • Oct 11 2008 | 8:22 am
      nice soft, thanks for the link
      maybe a convolution of instrument sound and Shepard tone can be a simple workaround
    • Aug 25 2009 | 7:38 pm
      check this : it's not perfect but works well...
    • Aug 25 2009 | 8:13 pm
      i disagree with the idea that the effect of the continiously rising tone would work only with a certain overtone structure/timbre.
      it is almost as cool with a saxophone sample or even a drumloop.
      and it also works when the distance between the tones is 1.377 octaves, it is a just a bit a different effect than in the "original" (wtf.)
      oh, did i mention that 110.modular has a shepard generator which outputs fade in/fade out data for each of the stages?
    • Aug 25 2009 | 9:20 pm
      and where's is 110.modular ? thx.
    • Aug 28 2009 | 9:27 am
      I'm afraid the link to seems to be broken.
    • Aug 28 2009 | 1:38 pm
      it's ok now. sorry.
    • Aug 28 2009 | 9:37 pm
      it is somewhere below here --> •
    • Aug 28 2009 | 10:29 pm
      Roman Thilenius wrote on Fri, 28 August 2009 23:37
      it is somewhere below here --> •
      yep, i saw lately. 'was tired...