Right,... pi/2 => 3.142857.../2 = 1.57143, => 90 degrees, 1 quadrature sweep.

.........     3.142857.../4 = 0.7857143 => 45 degrees, 1/2 quadrature sweep.


-pbs


--- forrest.cahoon@gmail.com wrote:

From: Forrest Cahoon 
To: csound@lists.bath.ac.uk
Subject: [Csnd] Re: Envelope with sinusoidal sections?
Date: Tue, 29 Mar 2011 14:42:05 -0500

Of course I meant pi/2 wherever I said pi/4. Or, if you prefer, 90 degrees.

On Tue, Mar 29, 2011 at 2:11 PM, Forrest Cahoon
 wrote:
> I'd like to have an envelope that would be like linseg, except that
> instead of line segments between the sections it would translate and
> scale a section of sinusoidal curve (like sin from -pi/4 to pi/4 or
> sin^2 from 0 to pi/4), creating a curve that is smooth at all the join
> points.
>
> (I'd love to get a curve that's also continuous in the second
> derivative, if there's some easy math I'm missing here; but I doubt
> that would actually make audible difference.)
>
> Any suggestions?
>
> Forrest
>


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