EEP - ns2riff

ns2riff - NeuroScan SynAmps EEG Import

Synopsis


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EEP 3.1  Max-Planck-Institute of Cognitive Neuroscience 1996-99
ns2riff 3.10   (OSF1 V4.0 alpha)              Wed Sep 15 13:30:10 1999
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  ns2riff [-t] <source cnt> <source cnt> ...  <dest cnt>

options:
  -t   write header information table(s) only, no conversion

Description

ns2riff converts NeuroScan SynAmps EEG records in the compressed EEP 3.x data format (loss-free compression to approx. 1/3 of the original size). Multiple files can be concatenated if their channel setup is the same.

The parts of the original file are transformed as follows:

NeuroScan binary header

is copied from the first source file to the destination file; this block is unused in EEP 3.x, it's archived only

signal data

are compressed; all sources are concatenated

trigger table

ns2riff converts the triggers received via the 8-bit parallel SynAmps trigger port and the special marks for record start/stop and DC-reset which are generated by the Acquire program.

Not converted are the "Keyboard" and "Keypad" events (never used here).