Knudsen SounderSuite EchoControl file formats
http://www.knudsenengineering.com/html/software/soundersuiteapps.html
.keb - Binary Echogram playback format
.kea - ASCII configurable log of depth, settings, and environmental data
.sgy - Binary SEG-Y extended seismic format
.xtf - Binary eXtended Triton format
