posted 04 July 2006 14:26            

In the Frequency fields of my Sample Sounds, I'm using the following expression:

!KeyNumber nn * !Reverse

!Reverse is a VCS toggle: grid 2, range -1 to 1.

The problem with this method is that most of my samples have long decays, and as they're being re-triggered at !BPM rate, playing them backwards is only playing the (virtually silent) decay portion. In other words, the samples are being re-triggered before their useful sound is reached.

Therefore, if my thinking is correct, I need the !Reverse toggle to trigger a change in the End parameter field, from 1, to something more useful like 0.25, depending on !Reverse's On/Off state.

I'm not sure what code I'll need for this. I've limited !Reverse's values to: 1, and -1 (grid 2). I'll need to scale these values to: 1 and 0.25 to use in the End field (I'm guessing 0.25 will work but I may need to tweak this). In Max I would use a scale object with arguments 1. - 1. 1. 0.25. Does anyone know of a code in Kyma for similar scaling of values?

Finally, I'll also need !Reverse to trigger a short AttackTime to remove clicks. Again, I'll need to scale it's values from: 1 and -1, to: 0 and say 0.25 (again I may need to tweak this value).

BTW, sorry for posting so much! I'm preparing this Sound along with a few others for a forthcoming live performance and I don't have much time to finish!

Thanks!

Jack

posted 04 July 2006 14:42            

You have the set of values {-1, 1}. Add 1 to get {0, 2}. Use result to look into an array:

(!Reverse + 1) of: #(0.25 0 1)

The second entry in the array is never accessed so you can make it whatever you like.

"Finally, I'll also need !Reverse to trigger a short AttackTime to remove clicks. Again, I'll need to scale it's values from: 1 and -1, to: 0 and say 0.25 (again I may need to tweak this value)."

Start with {-1, 1}. Add 1 to get {0,2}. Divide by 8 to get {0, 0.25}

posted 04 July 2006 14:53            

Got plenty of options now!

posted 05 July 2006 08:47            

!KeyNumber nn * !Reverse

the pitch should be converted to hertz before negating to get reversal