Frequency Toolbar

Frequency domain processing and filtering of traces (*)
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"Spectrum" - calculate and display interactive spectrum for active trace

"Spectrogram" - calculate and display interactive spectrogram for active trace

"Integrate" - frequency domain integration

"Differentiate" - frequency domain differentiation

"Hilbert" - frequency domain Hilbert transform

"Envelope" - frequency domain envelope calculation

"RemAttenuation" - frequency domain attenuation removal, uses current taup model, header gcarc and source depth values,
and Eqs. 6.85-6 in Shearer, P., 1999. Introduction to Seismology, 260 pp., Cambridge University Press, New York.

"Transfer" - transfer function tool

"Convolve" - convolution tool
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Transfer tool - frequency domain removal and addition of response functions

"from: <response type>" - response type to deconvolve from data

"to: <response type>" - response type to convolve with from data

"freq: <f0> <f1> <f2> <f3>" - frequency limits (1/sec) for linear ramp high pass (f0 to f1) and linear ramp low pass (from f2 to f3) filter
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Convolve tool - frequency domain convolution and deconvolution

"Master Index: <nnn>" - trace-group index for master trace to be convolved or deconvolved from active trace-group, NOTE: master trace is set to first trace in trace-group

"Type: CONVOLUTION | DECONVOLUTION" - action type, convolve or deconvolve master trace from active group trace(s)

"Master Ref Time: WINDOW_CENTER | WINDOW_START | O-P_MAX | <feature name>" - feature to be set to reference time (t=0) on master trace(s)

"Water Level (dB): <level>" - water level in dB, -1 for none (for deconvolution, complex denominator values with a magnitude less than Amin = <level> dB below the maximum denominator magnitude are replaced by a complex "water level" value with a magnitude of Amin and the same phase as the original denominator)

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