posted 01 September 2004 12:43            

Also, a related matter, say I want to parameterize the creation of value arrays for the Sequencer (or any other Sound that takes arrays). So, for example, use a "green variable" to set the length of the array being made. This cannot be done using the obvious method. Is there an alternative?

Thanks,

posted 02 September 2004 11:36            

{Array with: (!Freq 1000 500 750)
with: ( !Mod 0 0.75 0.25)}

To create the array algorithmically, you could concatenate an array containing just the hot value name with your algorithmically generated array. (In Smalltalk, you use a comma as the concatenation operator). So for example, in place of (!Freq 1000 500 750), you could use:

((Array with: !Frequency),
((1 to: 7) collect: [:i | !Freq suffix: i]))

posted 02 September 2004 12:10            

There are two tricky bits to this one. First, you have to make the starting point into the green variable, not the ending point (you probably got the varIfTrue error message, right?). So you have to count down instead of up and then reverse the result:

((?count to: 1 by: -1) collect: [ :i | 'P' asHotValue suffix: i]) reverse

The second trick has to do with when the expression is evaluated and when an actual number gets substituted for the green variable. Because of the ordering of things, Kyma would not recognize the expression above as an Array if it is pasted directly into a parameter field.

Instead what you can do is to put a green variable representing the array itself into your AnalogSequencer parameter field. For example say that you put ?pitches into the Pitches parameter field. Then make the AnalogSequencer Sound (say you named it anaSeq) an input to a Script.

In the Script you could write:

anaSeq
start: 0 s
pitches: ((?count to: 1 by: -1) collect: [ :i | 'P' asHotValue suffix: i]) reverse

to construct an Array of faders for the Pitches field.

posted 03 September 2004 07:28            

I'm trying to combine both methods to calculate the ExtraValues array in a script. Here's the code I am using:

********

|pitches durs gatetimes vels extras|

pitches := ((?len to: 1 by: -1) collect: [ :i | ('Transpose' asHotValue + 60 + ('P' asHotValue suffix2: i)) rounded nn]) reverse.

vels := ((?len to: 1 by: -1) collect: [ :i | 'sw' asHotValue suffix2: i]) reverse.

durs := #(1).

gatetimes := #(0.9).

extras := Array with: ((Array with: 'TimeIndex' asHotValue), ((( ?len to: 1 by: -1) collect: [:i | (2 * (i - 1) / ?len) - 1]) reverse)).

seq start: 0 s
rate: 'BPM' asHotValue / 60
amp: 'Amp' asHotValue db
durations: durs
dutyCycles: gatetimes
pitches: pitches
velocities: vels
extras: extras.

*********

everything works as expected except the "extras" (?extras is in the ExtraValue field of the AnalogSequencer). It would seem that the array I am passing is basically ignored. If I expand the sound I see the pitches and velocities in the "Values" field but no evidence of the extras. As further evidence the hot value 'TimeIndex' shows up in the virtual control surface, indicating it was not "bound" to something the sequencer provided.

Not sure what to try at this point.

Thanks for all your wonderful help!

Doug

posted 06 September 2004 11:58            

(!BPM countTriggersMod: ?len) of: ((Array with: 'TimeIndex' asHotValue), ((( ?len to: 1 by: -1) collect: [:i | (2 * (i - 1) / ?len) - 1]) reverse))