Re: [Bluemusic-users] Issue with bluesynth knob

[Kevin W. <tg...@gm...>]

Hello again Steven, it's been a long time!  I hope you're well.

I've been trying to dust off my csound/blue skills, and I have run
into a similar problem as Phiroc's, but slightly different.

I am trying to assign the output from a file selector widget into an
i-rate variable.  I have tried
  ifile = <file>
ifile = "<file>"
ifile = i(<file>)
and even ifile = i("<file>")

I'm running out of ideas here, do you have any suggestions?  I know
I've done this before many many years ago, and I don't recall having
to do anything special to achieve it.

On Sun, Jun 1, 2014 at 11:26 AM, Steven Yi <ste...@gm...> wrote:
> Hi Phillipe,
>
> Knobs generate k-rate signals.  In your code, you have the k-var being
> assigned to an i-var, which is not allowed in Csound.  This is shown
> in the generated code:
>
> iamp    = gk_blue_auto0 * 0dbfs
>
> where gk_blue_auto0 is the generated global k-rate var. In general, if
> you need the value of a knob only at init-time, you can do:
>
> iamp    = i(<amplitude>) * 0dbfs
>
> I use code like the above, wrapping in an i(), for things like ADSR
> values, which can then be modified in real-time for new notes, but the
> values stay the same during the lifetime of the single note.
>
> Hope that helps!
> steven
>
> On Sun, Jun 1, 2014 at 8:08 AM, Philippe de Rochambeau <ph...@fr...> wrote:
>> Hello,
>>
>> I have created an instrument containing a know whose code is as follows:
>>
>> -----
>>
>> iamp    = <amplitude> * 0dbfs
>> aout    vco2 iamp, 440
>>         outs aout, aout
>>
>> -----
>>
>> My score contains the following code:
>>
>> -----
>>
>> (def score "i2 0 2 3 4 5")
>>
>>
>> ——
>>
>> When I press the Play Button, I get the following error message:
>>
>> ——
>>
>> STARTING FILE
>> Creating orchestra
>> Creating score
>> rtaudio: PortAudio module enabled ...
>> using blocking interface
>> rtmidi: PortMIDI module enabled
>> error:  Unable to find opcode entry for '=' with matching argument types:
>> Found: i = k
>> Line: 38
>>  from file /Users/xxx/Desktop/BlueTests/tempCsd1077906860926146584.csd (1)
>> Parsing failed to syntax errors
>> Stopping on parser failure
>> cannot compile orchestra
>> end of score.              overall amps:      0.0
>>            overall samples out of range:        0
>> 1 errors in performance
>> Elapsed time at end of performance: real: 0.005s, CPU: 0.004s
>>
>> It seems  that the <amplitude> variable is not correctly replaced by the knob's button.
>>
>> Line 37 and 38 of the generated CSD file contain the following code:
>>
>> -----
>>
>> iamp    = gk_blue_auto0 * 0dbfs
>> aout    vco2 iamp, 440
>> ——
>>
>> Any help would be greatly appreciated.
>>
>> Many thanks.
>>
>> Phiroc
>>
>>
>>
>>
>>
>>
>>
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