Can you get the cos(n) from cos(t) signal ?

[purnapragna]

cos from cos(t)

Hi,

is it possible to get the discrete-time signal \[\cos\] from the continuous-time signal \[\cos(t)\]?

thnx

purna!

 

[eecs4ever]

cos from cos(t)

If you sample cos(t) for all integer values of t, and
store those values. you will have cos.

 

[v_c]

Re: cos from cos(t)

\[ \cos \] makes no sense to me! If \[n\] is taking on integer values, what values do you get for \[\cos\]? Try it on your calculator!

On the other hand if you take a time-domain signal like \[\cos(t)\] and sample it every \[T_s\] seconds then you can write \[\cos(n T_s)\]. Note that the period of \[\cos(t)\] is \[2 \pi\] so you have to choose \[T_s\] to be much smaller that this to have proper discritezation.

Best regards,
v_c

 

[purnapragna]

Re: cos from cos(t)

hey what i mean is, is it possible to sample \[\cos(t)\] to get the discrete-time signal \[\cos\]?

thnx

purna!