- #SCIPY SIGNAL PROCESSING HOW TO#
- #SCIPY SIGNAL PROCESSING CODE#
- #SCIPY SIGNAL PROCESSING SERIES#
- #SCIPY SIGNAL PROCESSING DOWNLOAD#
NOTE: GPS time is number of seconds since GMT.the "V1" means version 1 of this data release.the " 4" means the strain time-series data are (down-)sampled from 16384 Hz to 4096 Hz."H-H1" means that the data come from the LIGO Hanford Observatory site and the LIGO "H1" datector.Don't mix any other LOSC data files in this directory, or readligo.py may get confused. Put these files in your current directory / folder.From a unix/mac-osx command line, you can use wget for example,.
#SCIPY SIGNAL PROCESSING DOWNLOAD#
#SCIPY SIGNAL PROCESSING SERIES#
This tutorial assumes that you know a bit about signal processing of digital time series data (or want to learn!). Else, you can use the GW150914_tutorial.py script.
#SCIPY SIGNAL PROCESSING HOW TO#
If you know how to use "ipython notebook", use the GW150914_tutorial.ipynb file. This tutorial assumes that you know python well enough. Questions, comments, suggestions, corrections, etc: email to signal processing ¶ On Windows, or if you prefer, you can use a python development environment such as Anaconda ( ) or Enthought Canopy ( ). You will need the python packages: numpy, scipy, matplotlib, h5py. Or you can run the python script GW150914_tutorial.py. To begin, download the ipython notebook, readligo.py, and the data files listed below, into a directory / folder, then run it. Download the tutorial as iPython Notebook.Download the tutorial as a python script.Welcome! This ipython notebook (or associated python script GW150914_tutorial.py ) will go through some typical signal processing tasks on strain time-series data associated with the LIGO GW150914 data release from the LIGO Open Science Center (LOSC): If you are ok with FIR filtering, then that's easier: You can make a zero-phase filter and just do that in one direction (using lfilter instead of sosfilt), with the same process as above, and then throw away the head of the output, so that it looks as if it were done with no offset.SIGNAL PROCESSING WITH GW150914 OPEN DATA ¶