ASN8 - How does a CD player work: Difference between revisions

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[[Jodi Hodge|Back to my home page]]
[[Jodi Hodge|Back to my home page]]
These picks show what happens in time and frequency of the process CD player works digitally samples a ac signal.
These picks show what happens in time and frequency when a CD player digitally samples an ac signal. note that convolution in time will be multiplication in frequency and vise versa.


[[Image:x_continuous3.jpg]]<math>^.\!</math>[[Image:Impulst.jpg]]=[[Image:x_discrete_a.jpg]]
[[Image:x_continuous3.jpg]]<math>^.\!</math>[[Image:Impulst.jpg]]=[[Image:x_discrete_a.jpg]]
[[Image:x_frequency1b.jpg|thumb]] [[Image:Impulsf.jpg|thumb]]
[[Image:x_frequency1b.jpg|thumb]] *[[Image:Impulsf.jpg|thumb]]=


[[Image:x_frequency2a.jpg|thumb]]
[[Image:x_frequency2a.jpg|thumb]]^.
[[Image:x_frequency3a.jpg|thumb]]
[[Image:x_frequency3a.jpg|thumb]]=
[[Image:x_frequency4a.jpg|thumb]]
[[Image:x_frequency4a.jpg|thumb]]^.




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[[Image:x_discrete_a.jpg]]*[[Image:p_t.jpg]]'''*'''[[Image:lowpass_g_t.jpg]]=
[[Image:x_discrete_a.jpg]]*[[Image:p_t.jpg]]'''*'''[[Image:lowpass_g_t.jpg]]=


[[Image:x_step.jpg]][[Image:P_f.jpg|thumb]]
[[Image:x_step.jpg]][[Image:P_f.jpg|thumb]]=


[[Image:x_frequency5.jpg|thumb]]
[[Image:x_frequency5.jpg|thumb]]^.


[[Image:lowpass_G_f.jpg|thumb]]
[[Image:lowpass_G_f.jpg|thumb]]

Revision as of 15:05, 21 December 2009

Back to my home page These picks show what happens in time and frequency when a CD player digitally samples an ac signal. note that convolution in time will be multiplication in frequency and vise versa.

X continuous3.jpgImpulst.jpg=X discrete a.jpg

X frequency1b.jpg

*

Impulsf.jpg

=

X frequency2a.jpg

^.

X frequency3a.jpg

=

X frequency4a.jpg

^.


X discrete a.jpg*P t.jpg*Lowpass g t.jpg=

X step.jpg

P f.jpg

=

X frequency5.jpg

^.

Lowpass G f.jpg