Questions tagged [phase]
A quantity representing the fraction of cycle of a periodic signal, usually represented as an angle.
714 questions
0 votes
1 answer
43 views
Two dimensional visualization of the Fourier shift theorem
I wanted to examine the simplest possible situation of the Fourier shift theorem. My interpretation of the theorem is this: Displacements in image space lead to phase changes in Fourier space. To that ...
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1 vote
1 answer
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How to extract only one underlying coherent cycle from the signal?
I only want to extract one cycle from the signal.What I tried is: I subtracted raw signal from gaussian filtered signal(using ...
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0 votes
1 answer
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What can I deduce from this phase response of a coax cable?
Sorry for the horrible picture. This is the wrapped phase response of a 1 meter 3.5mm unterminated coax cable. The shift at around 7.2GHz is not something I'm used to seeing. Thoughts on this response?...
2 votes
1 answer
229 views
Discontinuity in phase delay
I have a transfer function (obtained from Example 5.8 in OS's DTST book) $$ H(z) = \frac{0.05634(1+z^{-1})(1-1.0166z^{-1}+z^{-2})}{(1-0.683z^{-1})(1 -1.4461z^{-1}+0.7959z^{-2})} $$ I'm interested in ...
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1 vote
1 answer
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What determines the number of points in the reconstructed signal found by the Griffin-Lim algorithm?
What determines the number of points in the reconstructed signal found by the Griffin-Lim algorithm? I am using the stftmag2sig function in MATLAB with the Method='gla' option, and the size of the ...
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1 vote
2 answers
207 views
Lowpass filter with minimum phase lag
Second order IIR lowpass filters are very common in control applications which are characterized by natural frequency ($\omega_N$) and damping ratio ($\zeta$) $$ T=\frac{\omega_N^2}{s^2+2\zeta\...
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1 vote
1 answer
97 views
Obtain the filter coefficients for $H^\ast (z)$ when the filter coefficients for $H(z)$ are known
The forward-backward IIR filtering process results in no distortion in the phase of the signal being filtered, because the output signal can be shown to be $$Y(j\Omega) = H(j\Omega) H^\ast(j\Omega) X(...
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0 votes
1 answer
144 views
Need help in understanding Bluetooth Channel Sounding Phase based ranging concept?
I am currently reading about the Phase based ranging method used in Bluetooth Channel Sounding Link Below is my understanding of the section titled 'Eliminating Local Oscillator Phase Offset' The ...
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