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I have a question. There is a signal which x-axis is freq. and y-axis is Power Spectrum Density. After convert this freq. domain signal to time domain(using IFFT), the x-axis is time, how about the unit in y- axis? Thank you. |
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y-axis of IFFT
Started by ●March 9, 2002
Reply by ●March 11, 20022002-03-11
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Should be the autocorrelation function R of the signal. Poochi ----- Original Message ----- From: "rongfenc" <> To: <> Sent: Friday, March 08, 2002 10:06 PM Subject: [matlab] y-axis of IFFT > I have a question. There is a signal which x-axis is freq. and y-axis > is Power Spectrum Density. After convert this freq. domain signal to > time domain(using IFFT), the x-axis is time, how about the unit in y- > axis? > Thank you. > > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: > > To Post: > > To Leave: > > Archives: http://www.yahoogroups.com/group/matlab > > More DSP-Related Groups: http://www.dsprelated.com/groups.php3 > > ">http://docs.yahoo.com/info/terms/ > _________________________________________________________ |
Reply by ●March 11, 20022002-03-11
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The IFFT of the PSD of a signal is the autocorrelation function (ACF) of
the original time-domain signal. Mark Egler Analogic > -----Original Message----- > From: rongfenc [mailto:] > Sent: Fri, March 08, 2002 10:07 PM > To: > Subject: [matlab] y-axis of IFFT > I have a question. There is a signal which x-axis is freq. and y-axis > is Power Spectrum Density. After convert this freq. domain signal to > time domain(using IFFT), the x-axis is time, how about the unit in y- > axis? > Thank you. |
