[PD] Sympathetic strings

[Derek Holzer]

Hi Pierre,

ah yes, Karplus-Strong, I forgot that keyword!

As for the analysis time of fiddle~, remember that computers aren't 
really real-time systems ;-) Besides that, you can change the analysis 
window size. Smaller windows equal faster analysis but less precision 
for lower frequencies. But yes, maybe new thread....

Good luck!
Derek

Pierre Massat wrote:
> Hi,
> I have tried your patch called karplus-strong. This is just amazing! 
> This solved two problems at once : getting a sitar-like sound plus a 
> sympathetic strings simulation. Thank a lot!
> 
> Although i think i should open a new thread about this, i was a little 
> shocked by the time fiddle~ takes to output a pitch (i used it to 
> control a resonator with my guitar). I think it was way above 10 ms. I 
> haven't tried sigmund~ yet, though. Do you know what latency i should 
> expect? I think 5 ms should do.
> Anyway, thanks again for introducing me to the Karplus-Strong model!
> 
> Pierre
> 
> 2010/2/12 Pierre Massat <pimassat at gmail.com <mailto:pimassat at gmail.com>>
> 
>     Thank you Derek! I'll give it a look.
>     Best,
> 
>     Pierre
> 
>     2010/2/11 Derek Holzer <derek at umatic.nl <mailto:derek at umatic.nl>>
> 
>         Hi Pierre,
> 
>         I've found resonant comb filters to be the most useful in both
>         simulating string sounds, and in getting sympathetic resonances.
>         There's tons of stuff in the list archives on them, in
>         particular a patch (maybe I even posted it) on calculating the
>         correct delay length for produce a given pitch. Search for "comb
>         filter".
> 
>         Best
>         Derek
> 
> 
>         Pierre Massat wrote:
> 
>             Hello everyone,
> 
>             I was wondering if anybody on this list would have an idea
>             of how one can simulate sympathetic strings in pd, using any
>             kind of audio input (especially NOT midi). I tried making a
>             patch with 12 resonating filters (moog~), each tuned to a
>             particular frequency belonging to the chromatic scale, but
>             the result wasn't too good (it sounded more like a weird
>             reverb).
>             My problem is basically that of isolating certain
>             frequencies in the input sound. I don't believe that objects
>             like fiddle~ or sigmund~ would be very helpful in that
>             matter, as they always start freaking out once you feed them
>             with chords.
>             I haven't found anything useful on the internet yet.
>             Any idea?
> 
>             Pierre
> 
> 
> 
>         -- 
>         ::: derek holzer ::: http://macumbista.net :::
>         ---Oblique Strategy # 130:
>         "Question the heroic"
> 
> 
> 

-- 
::: derek holzer ::: http://macumbista.net :::
---Oblique Strategy # 205:
"First work alone, then work in unusual pairs."