.\" @(#)rphase.1 1.00 93/03/15 IPB;
.TH RPHASE 1 "6 APRIL 1993"
.SH NAME
rphase \- random phase 
.SH SYNOPSIS
.B rphase
( inputfile | - )
[ outputfile ] [options]

.SH DESCRIPTION

.LP
.B rphase
reads an
.I EBS file
and adds "RPHASE removed phase information" to the processing history in
the header of the EBS output file. 
After this it reads each channel, fourier transforms it,
changes the phase information using a random generator,
transforms it back and writes the channels to the output file.

Thus:
.IP
.B
rphase c01.ebs outc01.ebs -t2048
.LP
.LP
If no input file is given, but if the argument
.RB ` \- '
is given,
.B rphase
reads from the standard input.

If no output file is given, rphase writes on
standard output.

.SH OPTIONS
.TP
.B \-h
Print help message.
.TP
.B \-v
Print extra information (verbose mode).
.B \-w
Use data windowing on input channels. The window shape
is the
.I Welch
window.
.TP
.B \-e
Displays before and after fourier transform
the
.I total power
of the input channels.
.TP
.B \-t<max>
Truncates too large positive or negative values to maximal/minimal 
amplitude <max>.
.TP
.SH BUGS
.LP
.B If
no output file is given and the standard output is not
piped into another file or program, rphase writes its
output to the console.
.SH AUTHOR
.LP
.B Ralf Schamburger,
Institut fuer Physiologie und Biokybernetik, Universitaet Erlangen-Nuernberg,
Germany.