Hi, i have an lfo modulating a cut off frequency for my filter, the osc~ outputs values between 0 and 1 but I need to scale it to values between 20 and 20000. what is the best way to do this? If i can scale it logarithmically it would be even better!

Thanks in advance!

[osc~]
|
[*~ 0.5]
|
[+~ 0.5]
|
[*~ 20000]
|
[+~ 20]
|
etc...

In terms of logarithmic scaling, the osc~ is already outputting a non linear 'ramp' according to the sine function. To make a linear ramp, use [line~] If you are trying to recreate 'pitch' , and not just tone, you might be better off using a counter and [mtof], which would give you chromatacism.

o right i get you cheers mate!

All i need to do now then is to graph my frequency response logarithmically, at the moment I have used the filtergraph 1 and 2 from the help files to graph my frequency response of my filter, but how do i make this graph logarithmically?

Thanks again!

open up filtergraph one, and there is a [t f f] going into a [pack], going into an [outlet]

from the right side of the [t f f], there is a cable going up into the [expr ...] object, and another cable going into the

• which varies the speed of the phasor~

you would need to add some sort of scaling maths there, which i can't tell you about cos i'm not very good with logs and inverse logs and all that stuff.

Thankyou so much mate! now stuck on this!

I have a wavetable player and and adc~ in my patch and need to know how to switch between them, dumb question I know but my head is getting fried!!

Can you help?

Cheers in advance!