Version 1 (modified by KlausStammler, 4 years ago) (diff) |
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## Compute power spectral density

**PSD <trclist> [<start> <end>]**:

Computes power spectral density for all traces specified. Creates new traces on display which should be plotted separately from time domain seismograms.

### parameters

- <trclist>
*parameter type: trace list*

List of traces to be processed.

- <start>
*parameter type: float*

Relative start time of time window. If omitted (together with <end>), the whole trace is used.

- <end>
*parameter type: float*

Relative end time of time window. If omitted (together with <start>), the whole trace is used.

### qualifiers

- /OVERLAP

Use overlapping time windows for PSD computation (50% overlap).

### example

`psd 1-3`- Computes PSD spectra for first three traces.