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From: jfa0522@hertz.njit.edu (john f andrews ece)
Newsgroups: comp.dsp
Subject: Re: 180 deg phase shift
Message-ID: <1991May7.152409.3933@njitgw.njit.edu>
Date: 7 May 91 15:24:09 GMT
References: <1644@fs1.ee.ubc.ca>
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In article <1644@fs1.ee.ubc.ca> jthornto@ee.ubc.ca (Johan Thornton) writes:
>In article <1420@cameron.egr.duke.edu> wdp@ee.egr.duke.edu (William D. Palmer) writes:
>>How about an op-amp inverting amplifier?
>
>
>Sure... it's simple in the analog domain.  In a digital system, the solution
>is a bit more complex.  The transfer function is:
>
>      X =  -X
>
>
>-- 
>Johan Thornton
>(but my friends call me jthornto@ee.ubc.ca)

Well, sure, you all can say how easy it is, but you're stopping shy of the
hard part. Can't implement a transfer function without getting it into the
form of a difference equation! That's the challenge...


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