Hi Rob,

You can use a LineObject with a Sound SoundObject, but you would
probably need to make the name of your variable gkgrainsize to make it
a gk signal. However, I think it would be better to use a BSB
instrument.  You can try this:

1. On your Sound soundObject, right click and convert to generic
score.  That should add the instrument code to the project orchestra
and the soundObject on the timeline should now be a generic score.

2. In the orchestra, right click and choose convert to BlueSynthBuilder.

3. In the UI editor, add a knob with boundary values (min/max) that
are appropriate for grain size. Assign it an objectName of "grainsize"

4. Switch to the code editor, go to where you had "kgsize = 0.5" and
the 0.5 is, delete the 0.5 and then press ctrl-shift-space.  This will
give you a list of all of the objectNames available from the widgets.
Select "grainsize" and that should put into the code editor
<grainsize>, so your text should now say "kgsize = <grainsize".

5. Now you have an automatable instrument.  You can just adjust the
value of that grain size by adjust the widget, or if you want to
automate, you can go to the timeline, find a layer you want to put
that automation and hit the "A" button on the soundLayer panel, then
navigate and select the "grainsize" parameter from the instrument.
>From here you should the value of the parameter over time as a graph.
You can then choose "Single Line" mode to edit the values of that
automation.

Let me know if that works for you.  I would suggest going this route
as I think after the small initial learning curve you get a lot of
benefit from making your instrument this way, including not having to
remember gk signal names, no worries about variable name clashing as
blue will handle generating unique variable names, and increased
portability/reuse of instrument.

Cheers!
steven


On Wed, May 28, 2008 at 4:19 PM, Rob Canning <robcanning@eircom.net> wrote:
> hello,
>
> i am starting with blue & csound and would like a little help.
> i have made a blue.SoundObject.Sound in the timeline
> and would like to control one of its paramaters with a LineObject
>
> in my generic editor i have this:
>
> ;insert instrument text here
> kgsize = .05
>
>
> a1      granule 7000, 12, 1,  1, 0, 2, 4, 0, 0, 4, 0.1, 30, kgsize, 30, 20,
> 20, 0.69, 1, 1.42, 0.29, 4, 0
> a2      granule 7000, 12, 1,  1, 0, 2, 4, 0, 0, 4, 0.1, 30, kgsize, 30, 20,
> 20, 0.39, 1, 1.42, 0.29, 4, 0
>
>       outs    a1,a2
>
> and in my table i have:
>
> f2 0 2097152 1 "/home/rob/mechanism.wav" 0 4 0
>
>
> ok so all that works fine...
>
>
> i would like to have something like:
>
> kgsize = grainsize
>
>
> then a LineObject called grainsize to control it.
>
> is this possible to work this way or do i need to make a BSB instrument in
> order to automate parameters?
>
> if the later what would such a BSB look like? i have had a go at making one
> and looked at some examples in the blue share but don't seem to "get it"
>
> many thanks
>
> rob c
>
> p.s. whats the csound community like here in london uk? i never meet any
> csounders here... all pd and supercollider heads - i need to find some
> people i can barter pints for knowledge with...
>
>
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