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[[Image:Samprate1_ECE301Fall2008mboutin.jpg]] | [[Image:Samprate1_ECE301Fall2008mboutin.jpg]] | ||
| − | <math>y[n]=sin[n] \!</math> with a sample rate of <math>pi/ | + | <math>y[n]=sin[n] \!</math> with a sample rate of <math>pi/4 \!</math> |
| + | [[Image:Samprate2_ECE301Fall2008mboutin.jpg]] | ||
Revision as of 18:08, 11 September 2008
Periodic Signals Revisited
1. By sampling at different frequencies the function $ y=sin(x)\! $ can appear as both periodic and non-periodic in DT. For example:
$ y(x)=sin(x) \! $ in CT
$ y[n]=sin[n] \! $ with a sample rate of 1
$ y[n]=sin[n] \! $ with a sample rate of $ pi/4 \! $
