# [CM] Somewhat OT filter design question.

**Don Craig
**
rhomboid at u.washington.edu

*Sat, 17 Nov 2007 08:39:43 -0800*

At the very top of the next page, it tells you what to do for n/2. I
forget what exactly
as I don't have the book with me. I remember being confused about this
as well.
Don
On Nov 16, 2007, at 11:49 PM, Steven Jones wrote:
>* I'm reading through the second edition of Computer Music by Charles
*>* Dodge. At the bottom of page 203 there is an equation for determining
*>* fir low pass coefficients. But whenever the index k=N/2 there is a
*>* division by zero. Is this equation correct?
*>*
*>* Thanks in advance
*>* --Steven Jones
*>*
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