Re: cello-like synthesizer?

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On Sat, Feb 26, 2011 at 3:18 AM, Cedric Roux <sed@xxxxxxx> wrote:
> ----- "Loki Davison" <loki.davison@xxxxxxxxx> wrote:
>
>> On Fri, Feb 25, 2011 at 8:07 PM, Cedric Roux <sed@xxxxxxx> wrote:
>> > Or any string instrument that you play with a bow
>> > if cello is too specific.
>> >
>>
>> I think this will be fantastically difficult to sound decent, unless
>> you want a very simple and limited instrument. The range of different
>> strokes with the bow is extensive, and the complex combination of
>> speed /angle / force / distance from bridge would be irreproducibile.
>> Have you tried playing a bowed instrument? I think working out how to
>> do it without some bow technique knowledge would be hard. I suspect
>> either a real cello / electric cello or getting an EUB would be a far
>> superior option. If you want to make that wacky have effects on the
>> electric cello with some stomp boxes.
>>
>> Loki
>
> I was thinking of a physical model maybe. I've read once a PhD
> of a guy modelling a classic guitar. Full of maths, differential equations
> and so on. And some audio samples were provided. It sounded nice.
> The guy is Grégoire Derveaux.
> The PhD is at: http://www-rocq.inria.fr/macs/spip.php?article102
> It's in french but there is: http://www-rocq.inria.fr/macs/spip.php?article81
> It is not realtime as far as I know.

There is the thesis in english that explains for some stuff, physical
modelling is very hard and less effective than easier to understand
and implement methods. http://smack.berlios.de/thesis.pdf The thesis
isn't great but it was a huge amount of work, and it's full of maths,
sound samples, etc. ;)  The guy in this case is me. :) You can use
karplus-strong (physics inspired..) very easily for string synthesis
but modelling the bow is still a huge task.

Loki
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