19 Feb
2012
19 Feb
'12
11:48 p.m.
On Sun, Feb 19, 2012 at 4:54 PM, Mathieu Bouchard matju@artengine.ca wrote:
Why would you change the signs of a and b but not c ?
(Was I giving the formula relative to ax²+bx+c=0 or did I assume ax²+bx=c by accident ?)
I think it has to do with where c is in the difference equation:
c*y[n] = g*x[n] + a*y[n-1] + b*y[n-2]
Julius Smith explains it better than I could: https://ccrma.stanford.edu/~jos/fp2/Z_Transform_Difference_Equations.html
.mmb
--
Mike Moser-Booth - mmoserbooth@gmail.com
Master's Student in Music Technology
Schulich School of Music, McGill University
Centre for Interdisciplinary Research in Music Media and Technology
"If you think education is expensive, try ignorance" -Derek Bok