Timeline for Understanding the transfer function of an FIR filter
Current License: CC BY-SA 3.0
11 events
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| Apr 27, 2012 at 11:12 | history | tweeted | twitter.com/#!/StackSignals/status/195832685162274816 | ||
| Apr 16, 2012 at 14:15 | comment | added | user968243 | Hmm... Any recommendations? I'd kind of like to understand what it's saying cos it seems useful, and it crops up in other stuff, for instance, it says $y[n] = H(e^{j\omega})x[n] $ later on. This is important cos I believe it gives the frequency response. From what I understand, the transfer function to calculate the frequency response is a special case of the $z^n$ thing in my question. | |
| Apr 16, 2012 at 13:23 | comment | added | Dilip Sarwate | I am not surprised that you do not understand it; I don't think I understand it either. The point being made is totally obscured by the poor choice of notation by the authors of the text | |
| Apr 16, 2012 at 13:01 | comment | added | user968243 | I've edited my question with book page which 'explains' it, though I don't really understand it. | |
| Apr 16, 2012 at 13:01 | history | edited | user968243 | CC BY-SA 3.0 |
added 206 characters in body
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| Apr 16, 2012 at 1:08 | answer | added | Jim Clay | timeline score: 1 | |
| Apr 15, 2012 at 22:37 | answer | added | Hilmar | timeline score: 1 | |
| Apr 15, 2012 at 16:13 | comment | added | Dilip Sarwate | $x[n] = z^n$ makes no sense. Are you sure it does not say $X(z) = z^n$, or more likely, $X(z) = z^{-n}$? | |
| Apr 15, 2012 at 13:35 | comment | added | user968243 | Thanks for the reply. $y[n]$ is the output of the FIR filter at time $n$. the input that produces $y[n]$ is $x[n]$, and in the case above, $x[n] = z^n$ — I'm not really sure if z is supposed to be constant or not. Your assumptions re $H[n]$ and $h[n]$ are correct. If this is confusing, I can try and post the page from the book I'm basing this question on. I appreciate the help, thanks! | |
| Apr 15, 2012 at 12:38 | comment | added | Dilip Sarwate | Please tell us the context of your first displayed equation. Is $y[n]$ the FIR filter output at time $n$? What is the input that produces this $y[n]$? I will assume that $H(z)$ is the transfer function of the FIR filter and $h[n]$ is the FIR response at time $n$. | |
| Apr 15, 2012 at 5:05 | history | asked | user968243 | CC BY-SA 3.0 |