Oversample
(Package: TDD) :
Oversample by Nearest-Neighbor Interpolation
In order to maintain digital filter fidelity at very high frequencies, it is sometimes necessary to oversample a signal. This function oversamples a signal by nearest-neighbor interpolation.
● Data Source:
CranContrib
● Keywords: misc
● Alias: Oversample
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MatchCoefDPZ
(Package: TDD) :
Find Digital Match to Analog Poles/Zeros
Calculates digital poles and zeros to match a continuous instrument response given in poles, zeros, and sensitivity. Discretization effects mean that the given poles and zeros do not work for finite sample rates, with discrepancies increasing as the time interval increases. This function uses a Markov Chain Monte Carlo (MCMC) routine to match the responses.
● Data Source:
CranContrib
● Keywords: misc
● Alias: MatchCoefDPZ
●
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DeconSeis
(Package: TDD) :
Deconvolve discrete instrument response from many traces
Deconvolves instrument responses from a seismogram structure from the RSEIS package.
● Data Source:
CranContrib
● Keywords: misc
● Alias: DeconSeis
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PlotResp
(Package: TDD) :
Plot Instrument Responses
Plots responses of analog and digital poles/zeros lists.
● Data Source:
CranContrib
● Keywords: misc
● Alias: PlotResp
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MakeDPZ
(Package: TDD) :
Calculate Find Digital Match to Analog Poles/Zeros
Calculates digital poles and zeros to match a continuous instrument response given in poles, zeros, and sensitivity. Discretization effects mean that the analog poles and zeros do not work for finite sample rates, with discrepancies increasing as the time interval increases.
● Data Source:
CranContrib
● Keywords: misc
● Alias: MakeDPZ
●
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CalcCorners
(Package: TDD) :
Calculate Corner Frequencies
Inputs a continuous instrument response list and returns a vector of its cutoff frequencies (defined here as the -3dB point). Optionally plots results.
● Data Source:
CranContrib
● Keywords: misc
● Alias: CalcCorners
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PZ2Coef
(Package: TDD) :
Calculate Recursive Filter Coefficients
Returns coefficients of recursive filter approximating instrument response, given poles/zeros and sample interval.
● Data Source:
CranContrib
● Keywords: misc
● Alias: PZ2Coef
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ButterPZ
(Package: TDD) :
Calculate Butterworth Filter Poles and Zeros
Calculates continuous poles and zeros (of the Laplace transform) of Butterworth filters.
● Data Source:
CranContrib
● Keywords: misc
● Alias: ButterPZ
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DeconTrace
(Package: TDD) :
Deconvolve Instrument Response (Single Trace)
Deconvolves a discrete instrument response from a seismic trace.
● Data Source:
CranContrib
● Keywords: misc
● Alias: DeconTrace
●
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ConvDiffCoef
(Package: TDD) :
Convert Differential to Difference Eq. Coefficients
Returns difference equation coefficients corresponding to input differential equation coefficients and sample interval.
● Data Source:
CranContrib
● Keywords: misc
● Alias: ConvDiffCoef
●
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