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NOTICE!!! THIS PROGRAM COMES WITH NO WARRANTY, TO THE EXTEND PERMITED BY LAW!

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Time-frequency-analysis

• Executing time-frequency analysis with Short Time Fourier Transform(STFT) method.

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Installation

• Execute 'make' to compile executable command 'time-fre'.

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Dependencies

• Linux or Mac OS platform.
• GMT (the Generic Mapping Tools, here, version 5.4.5).
  • Download GMT
• pssac2 (module of plotting SAC format file)
  • How to install pssac2

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Usage

• time-fre SACfile t1 t2 segment_length fre_low fre_high output_file

parameter	mean
SACfile	name of SAC format file
t1	begin time of doing time-frequency analysis
t2	end time of doing time-frequency analysis
segment_length	segment length of doing time-frequency
fre_low	low limitation of corner frequency of doing time-frequency analysis
fre_high	high limitation of corner frequency of doing time-frequency analysis
output_file	file name of outputting results

Example

Go the directory "Example" and run with command below.

time-fre ft_BBR.BHZ.SAC 0 30000 50 0.005 0.2 out.txt

Run the plot shell script "plot.sh" and you can see it as below figure.

result

Contribution

• Author: Xuping Feng
• Email: [email protected]