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DTFE estimates transfer function between time-series objects. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DESCRIPTION: DTFE makes discrete transfer function estimates of the time-series in the input analysis objects. The estimate is done by taking the ratio of the DFTs between the two inputs at the specified frequencies. CALL: b = dtfe(a1,a2,pl) INPUTS: a1 - input analysis object a2 - input analysis object pl - input parameter list OUTPUTS: b - output analysis object Parameters Description %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
| Method Details | |
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| Access | public |
| Defining Class | ao |
| Sealed | 0 |
| Static | 0 |
| Sets for this method … |
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| Default |
Default |
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| no description | |||
| Key | Default Value | Options | Description |
| dft | |||
| WIN | {13, {'Rectangular', 'Welch', 'Bartlett', 'Hanning', 'Hamming', 'Nuttall3', 'Nuttall4', 'Nuttall3a', 'Nuttall3b', 'Nuttall4a', 'Nuttall4b', 'Nuttall4c', 'BH92', 'SFT3F', 'SFT3M', 'FTNI', 'SFT4F', 'SFT5F', 'SFT4M', 'FTHP', 'HFT70', 'FTSRS', 'SFT5M', 'HFT90D', 'HFT95', 'HFT116D', 'HFT144D', 'HFT169D', 'HFT196D', 'HFT223D', 'HFT248D', 'Kaiser', 'levelledHanning'}, 1} | none | The window to be applied to the data to remove the discontinuities at edges of segments. [default: taken from user prefs] Only the design parameters of the window object are used. Enter a string value containing the window name e.g. plist('Win', 'Kaiser', 'psll', 200) plist('Win', 'BH92') |
| PSLL | 200 | none | The peak sidelobe level for Kaiser windows. Note: it is ignored for all other windows |
| SCALE | 1 |
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Scale the output according to the applied window resulting in [unit] rms. |
| F, FREQUENCIES, F0 | -1 | none | The vector of frequencies at which to compute the DFT or an AO where the x-axis is taken for the frequency values. |
| NBINS | 5 | none | The number of bins either side of each frequency from which to compute the mean error.The error will be computed from the bins deltaF*[-Nbins-skip:-skip skip:skip+Nbins] where deltaF = fs/Nsamples is the frequency resolution. |
| SKIP | 3 | none | The number of bins either side of each frequency to ignore when computing the mean error. |
| dtfe | |||
| ORDER, N | 0 |
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The order of segment detrending:
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| TIMES, SPLIT | [] | none | The time range to analyze. If not empty, sets the time interval to operate on. As in ao/split, the interval can be specified by:
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Example |
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| plist('WIN', {13,{'Rectangular', 'Welch', 'Bartlett', 'Hanning', 'Hamming', 'Nuttall3', 'Nuttall4', 'Nuttall3a', 'Nuttall3b', 'Nuttall4a', 'Nuttall4b', 'Nuttall4c', 'BH92', 'SFT3F', 'SFT3M', 'FTNI', 'SFT4F', 'SFT5F', 'SFT4M', 'FTHP', 'HFT70', 'FTSRS', 'SFT5M', 'HFT90D', 'HFT95', 'HFT116D', 'HFT144D', 'HFT169D', 'HFT196D', 'HFT223D', 'HFT248D', 'Kaiser', 'levelledHanning'},1}, 'PSLL', [200], 'SCALE', [true], 'F', [-1], 'NBINS', [5], 'SKIP', [3], 'ORDER', [0], 'TIMES', [[]]) |
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| Some information of the method ao/dtfe are listed below: | |
|---|---|
| Class name | ao |
| Method name | dtfe |
| Category | Signal Processing |
| Package name | ltpda |
| VCS Version | 967b0eec0dece803a81af8ef54ad2f8c784b20b2 |
| Min input args | 2 |
| Max input args | -1 |
| Min output args | 1 |
| Max output args | -1 |
| Can be used as modifier | 0 |
| Supported numeric types | {'double'} |
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Method: ao/dsmean | Method: ao/ecdf | ![]() |
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