Thanks again Florian. I'll have a look at these videos.
By the way, do you know if this form of synthesis is in any way related to how the, much maligned, Korg Poly 800 generates its tones

It too uses the 16, 8, 4, 2 footages of square waves, which can be combined to evince a basic form of wave shaping. Alternatively, the same footages of close approximation of a saw wave can be used.

Cheers,
Alan

--- In Doepfer_a100@yahoogroups.com , Florian Anwander <fanwander@...> wrote:
>
> Hi Alan
>
> unfortunatley my SH3a is parts and pieces at the moment: not in a
> shippable state definitely ;-)
>
> Nevertheless these my give some ideas:
> http://www.youtube.com/watch v=QuqWtlKZCYY
> http://www.youtube.com/watch v=dJ4I5Tgxs8E
>
> Also the way Roland made string sounds in the RS09 might be interesting.
>
> They had four octaves of rectangle like the A115, mixed them in a relation:
> 16"1,
> 8" 1/2
> 4" 1/3
> 2" 1/4
> then they filtered this in a highpass. This highpass output provides a
> pseudo-saw as base for the typical Roland string sound.
>
>
> Florian
>
> Alan schrieb:
> > Thanks for the suggestion Florian. Do you think you could send me an SH3a so I can put it to the test ;-)
>