Y. Takahashi, M. Tohyama, Y. Yamasaki, Phase response of transfer functions and coherent field in a reverberation room. Electron. Commun. Jpn. 90 (4 Part 3), 1–8 (2007)Y. Takahashi, M. Tohyama, and Y. Yamasaki, "Phase responses of transfer functions and coherent field in a ...
The function returns the n-point phase response vector in phi and the corresponding angular frequency vector w. [phi,w] = phasez(B,A,"ctf",n) returns the n-point phase response of the digital filter represented as Cascaded Transfer Functions (CTF) with numerator coefficients B and ...
multi-distance approaches utilizing intensity measurements at both small and large defoci have been proposed45,53,54,55,56, which allow the response of phase transfer function to be optimized
[Hr,w] = zerophase(b,a) returns the zero-phase response of the specified digital filter. Specify a digital filter with numerator coefficients b and denominator coefficients a. The function evaluates the zero-phase response at 512 equally spaced points on the upper half of the unit circle, an...
Figure 1. Filter as cascade of two transfer functions. The Low-Pass Transfer Equation First, we will reexamine the phase response of the transfer equations. For the single-pole low-pass case, the transfer function has a phase shift given by: ...
which is difficult for detection. A more quantitative analysis can be performed through the phase transfer function13, which characterizes the transfer response of phase content at different spatial frequencies for an imaging system. For holography and Shack-Hartmann wavefront sensing, due to the inter...
For a filter with transfer function H(s)=K∏i(s−zi)∏k(s−pk)wherezi,pkare zeros and poles ofH(s),andKis a gain, vectors Z→i(Ω) and P→k(Ω), going from each of the zeros and poles to the frequency at which we are computing the magnitude and phase response in the ...
When s=1, the WOTF becomes the incoherent OTF, and the phase information completely vanishes, while the PGTF still maintains half of the response. Sign in to download hi-res image Fig. 69. The phase gradient transfer function under different coherent parameters. Note that the abscissa ...
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Transfer function coefficients, specified as vectors. Data Types: single | double n— Number of frequency points over which to evaluate response 512 (default) | positive integer Number of frequency points over which to evaluate response, specified as a positive integer. Set n to a value greater...