13 Apr
2006
13 Apr
'06
5:38 a.m.
On Fri, 7 Apr 2006, Frank Barknecht wrote:
3.audio.examples/E05.chebychev.pd is the waveshaping example in Miller's docs.
You may also test with *any* Chebyshev polynomial using the following polynomial:
[min 1] | [max -1] | [expr cos($f2*acos($f1)]
the min max are required because tabread4 needs one sample over each side of the [-1;1] range, but that's not permitted by acos.
This expr *really* acts like a polynomial when used in the [-1;1] range. That's the same formula that Chebyshev used to find the coefficients for the polynomials.
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju | Freelance Digital Arts Engineer, Montréal QC Canada