LTPDA Toolbox™ | contents | ![]() ![]() |
LTFE implements transfer function estimation computed on a log frequency axis. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DESCRIPTION: LTFE implements transfer function estimation computed on a log frequency axis. The estimate is done by taking the ratio of the CPSD between the two inputs, Sxy, divided by the PSD of the first input, Sxx: Sxy / Sxx where x is the first input, y is the second input CALL: b = ltfe(a1,a2,pl) INPUTS: a1 - input analysis object a2 - input analysis object pl - input parameter list OUTPUTS: b - output analysis object Parameters Description VERSION: $Id: ltfe.m,v 1.29 2011/04/08 08:56:16 hewitson Exp $ References: "Improved spectrum estimation from digitized time series on a logarithmic frequency axis", Michael Troebs, Gerhard Heinzel, Measurement 39 (2006) 120-129. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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 |
KDES | 100 | none | The desired number of averages. |
JDES | 1000 | none | The desired number of spectral frequencies to compute. |
LMIN | 0 | none | The minimum segment length. |
WIN | 'Hanning' |
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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 |
OLAP | -1 | none | The segment percent overlap [-1 == take from window function] |
ORDER | 0 |
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The order of segment detrending:
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TIMES | [] | 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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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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Some information of the method ao/ltfe are listed below: | |
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Class name | ao |
Method name | ltfe |
Category | Signal Processing |
CVS Version | $Id: ltfe.m,v 1.29 2011/04/08 08:56:16 hewitson Exp $ |
Min input args | 2 |
Max input args | -1 |
Min output args | 1 |
Max output args | -1 |
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Method: ao/lscov | Method: ao/map3D | ![]() |
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