## lfo filter sweep

Scope and XITE Development

Original topic on PlanetZ: https://forums.scopeusers.com/viewtopic.php?t=24413

#### lfo filter sweep

Posted: Fri Feb 15, 2008 9:10 am
by Jah Servant
well you know I must have more questions
I want to set an lfo to sweep a filter between the values I set, so I want to set a high and low limit on the filter and sweep between that. The thing is that the lfo likes to go from positive to negative and overiding the limits I set so it pushes the filter past where it should go. How can I make it stay on the positive side sweeping within limits?

#### Re: lfo filter sweep

Posted: Fri Feb 15, 2008 10:55 am
by Warp69

> Jah Servant wrote:well you know I must have more questions
> I want to set an lfo to sweep a filter between the values I set, so I want to set a high and low limit on the filter and sweep between that. The thing is that the lfo likes to go from positive to negative and overiding the limits I set so it pushes the filter past where it should go. How can I make it stay on the positive side sweeping within limits?

lfo_out * 0.5 + 0.5 = range [0;1]
You could use the Mix 2 module for that - remember that 0.5 is 1073741824
If you need another range than [0;1] then scale the values 0.5.