On Wed, Oct 22, 2014 at 8:51 AM, Su Li <liis...@gmail.com> wrote: > Hi, > > After demodulation, I get a stream of "0" and "1" in UChar format, I want > to save this stream to a file and have a look at these raw bits before > decoding them. I tried to use "File Sink" block to save them, but I cannot > open the saved file with "gedit". It can be opened with "GVim", but the > content are not 0 and 1. They are "^@" and "^A". > > Is there anyway to save the bit stream so that when I can open the saved > file I can get the stream shown as "0" and "1"? > > The flow graph is shown as following > > > ​Thanks in advance. > > Best regards, > Su >
Files are saved as binary bit streams. What you're seeing is the ASCII representation of random 1's and 0's for each bit in the data stream. Have a look here: http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink-How-can-I-read-files-produced-by-a-file-sink Tom
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