Timeline for How to find complex envelope of a signal in MATLAB?
Current License: CC BY-SA 4.0
19 events
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| Jan 12, 2022 at 4:49 | comment | added | kotori | I did,thank you! | |
| Jan 12, 2022 at 4:49 | vote | accept | kotori | ||
| Jan 12, 2022 at 4:48 | vote | accept | kotori | ||
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| Jan 12, 2022 at 4:47 | vote | accept | kotori | ||
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| Jan 12, 2022 at 4:41 | comment | added | kotori | ohh thank you!! | |
| Jan 12, 2022 at 4:29 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 12, 2022 at 4:24 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 12, 2022 at 4:12 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 12, 2022 at 4:07 | comment | added | Dan Boschen | @kotori Ok I see, yes the envelope can be a complex quantity and it is found using the same process. I'll expand how the analytic signal is a complex envelope and phase function. | |
| Jan 12, 2022 at 3:49 | comment | added | kotori | I get it! in this case complex envelope is a constant ,If I change the modulating signal to a more complicated one,like Xt = x(t)*Accos(2*pifc*t+φ(t)),How to get the complex envelope in MATLAB? complex envelope becomes complex,in this case envelope is the same as complex envelope? | |
| Jan 12, 2022 at 3:38 | comment | added | Dan Boschen | So the envelope itself is not complex-- if you are referring to something else that is itself a complex quantity as the envelope then I am missing something. | |
| Jan 12, 2022 at 3:34 | comment | added | Dan Boschen | @kotori I believe this is the complex envelope if you mean by that the amplitude of a complex signal. For example to confirm we are saying the same thing, the complex signal $3e^{j \omega t}$ would also have a constant amplitude of 3. Notice that the analytic signal is a complex signal, and the analytic signal for $3cos(\omega t)$ IS $3e^{j \omega t}$! | |
| Jan 12, 2022 at 3:31 | comment | added | kotori | Thank you very much!! I think here envelope is different from complex envelope, I also want to get complex envelope of a signal, Could I get mathematical expression of complex envelope only from known signal Xt in MATLAB? | |
| Jan 12, 2022 at 3:18 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 12, 2022 at 0:48 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 12, 2022 at 0:48 | comment | added | Dan Boschen | Yes! I was, thank you!! | |
| Jan 12, 2022 at 0:33 | comment | added | GrapefruitIsAwesome | are you missing an imaginary unit before the Hilbert transform in the analytic signal expression? (Sorry but its not letting me "at" for some reason...) | |
| Jan 12, 2022 at 0:07 | history | edited | Dan Boschen | CC BY-SA 4.0 |
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| Jan 11, 2022 at 23:51 | history | answered | Dan Boschen | CC BY-SA 4.0 |