GoldWave Inc.

Hello all,

It's been a while since I've used the expression evaluator(EE) and there is something I'm trying to achieve with it. Let's say I first create a wave file and use the EE to give it a value of 1, then I use the Shape Volume effect to essentially create an envelope with that file. Is it possible to use that wave file to control the frequency of a tone in the EE? I've been trying, but it's not working - I'm getting strange artifacts. I must be missing something obvious.

Here is an example expression, where "wave2(n)" is the envelope:
sin(2*pi*(f*wave2(n))*t)

Any help is greatly appreciated.

Thanks!

John

You'll need to figure out the integral of the wave.

Ah, that makes sense. Guess I need to brush up on my math. LOL!

Thank you so much!

John

OK, I've tried brushing up on my math and cannot figure this out. Does anyone understand how one wave file can be used to alter the frequency of a sine wave in the expression evaluator...in layman's terms?

Is that sort of thing not worth the effort?

Any advice is appreciated. Thank you!

John

Not sure if this would work, but maybe you could perform a couple of expressions. In the first expression, you'd calculate the sum of the points in the graph using "wave(n)+wave(n-1)" (essentially the area under the graph, which would be the integral). Then you can use that wave (scaled as necessary) as the modulation function.

And the clouds parted...

That makes sense!

Thank you so much, Chris. I will try that.

John