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Valid? ~AJFunche
 
Valid? ~AJFunche
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::It's a bit more complicated than a mere rescaling of the frequency axis. First, one must not forget that the DTFT is ALWAYS periodic with period <math>2\pi</math>. Second, the amplitude of the FT changes when sampling. Third, something called "aliasing" might occur. --[[User:Mboutin|Mboutin]] 08:56, 7 September 2010 (UTC)

Revision as of 04:56, 7 September 2010

So, my understanding of this material is that X(f),X1(w) mainly differ on their X axis scaling, and same sort of thing X1 and X2?

Valid? ~AJFunche

It's a bit more complicated than a mere rescaling of the frequency axis. First, one must not forget that the DTFT is ALWAYS periodic with period $ 2\pi $. Second, the amplitude of the FT changes when sampling. Third, something called "aliasing" might occur. --Mboutin 08:56, 7 September 2010 (UTC)

Alumni Liaison

Ph.D. 2007, working on developing cool imaging technologies for digital cameras, camera phones, and video surveillance cameras.

Buyue Zhang