Tools

MeasureSNR

# Seismic.MeasureSNR — Function.

MeasureSNR(signal, noisy; db=false)

Measure the signal-to-noise ratio between the clean input signal and the contaminated input noisy.

Arguments

  • signal::Array{Real, N}: N-dimensional clean signal. N must be <= 5.
  • noisy::Array{Real, N}: N-dimensional noisy signal of same size as signal.

Keyword arguments

  • db::Bool=false: db=false if the signal-to-noise ratio is measured by

amplitude, or db=true if the signal-to-noise ratio is measure in dB.

Example

julia> d, extent = SeisHypEvents(); dnoisy = SeisAddNoise(d, 2); 
MeasureSNR(d, dnoisy)

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PadFirstAxis

# Seismic.PadFirstAxis — Function.

PadFirstAxis(d, N1)

Zero-padding first axis of N-dimensional array d.

Arguments

  • d::Array{Real, N}: N-dimensional data.
  • N1::Int: total number of samples for the first axis of the zero-padded data.

Examples

julia> w = Ricker(); wpad = PadFirstAxis(w, 128); plot(w); plot(wpad+1.0)

julia> d, ext = SeisHypEvents(); dpad = PadFirstAxis(d, 512);
SeisPlot(d); SeisPlot(dpad)

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