LTPDA Toolbox™ | contents | ![]() ![]() |
FILTSUBTRACT subtracts a frequency dependent noise contribution from an input ao. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DESCRIPTION: FILTSUBTRACT subtracts a frequency dependent noise contribution from an input ao. The method computes the transfer function between both input AOs and fits a miir model to it. The frequency band is applied is set by a threshold in the coherence that the user defines as an input parameter. CALL: c = filtSubtract(a,b pl) INPUTS: a - AO from where subtract linear contributions b - AOs with noise contributions pl - parameter list (see below) OUTPUTs: c - output AO with contributions subtracted (tsdata) Parameters Description TODO: handling errors split by coherence function %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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 |
FS | [] | none | target sampling frequency to resample the data. |
TIMES | '' | none | selects the interval where the subtraction is applied. |
TIMES POSTFILTER | '' | none | selects the filter transient intervals to be removed. |
FREQUENCIES | '' | none | selects the frequency band where the transfer |
FILT | '' | none | a miir/mfir object which will be used as a transfer function. If this option is selected the fit is avoided. |
AUTOSEARCH | 'on' |
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(ao.zDomainFit) |
MAXITER | 50 | none | Maximum number of iterations in fit routine (ao.zDomainFit). |
MINORDER | 2 | none | Minimum order to fit with (ao.zDomainFit). |
MAXORDER | 20 | none | Maximum order to fit with (ao.zDomainFit). |
WEIGHTPARAM | 'abs' |
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(ao.zDomainFit) |
FORCESTABILITY | 'off' |
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Force poles to be stable (ao.zDomainFit) |
PLOT | 'off' |
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Plot results of each fitting step (ao.zDomainFit) |
CHECKPROGRESS | 'off' |
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Display the status of the fit iteration. (ao.zDomainFit) |
KDES | 100 | none | The desired number of averages (ao.ltfe). |
JDES | 1000 | none | The desired number of spectral frequencies to compute (ao.ltfe). |
SCALE | '' | none | |
TYPE | '' | none | |
WIN | 'Hanning' |
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The window to be applied to the data to remove the discontinuities at edges of segments (ao.ltfe). |
Some information of the method ao/filtSubtract are listed below: | |
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Class name | ao |
Method name | filtSubtract |
Category | Signal Processing |
Package name | ltpda |
VCS Version | 8ab8cbbc4bccf7543491a24448f4aae0b1be1c43 |
Min input args | 1 |
Max input args | -1 |
Min output args | 1 |
Max output args | -1 |
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Method: ao/fftfilt | Method: ao/filter | ![]() |
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