function ph = read7KPingHead(fp)
%
%
%

ph.timestamp = fread(fp,[1,1],'uint32') ;
ph.pingNumber = fread(fp,[1,1],'uint32') ;
ph.nChan = fread(fp,[1,1],'uint32') ;
ph.nBytes = fread(fp,[1,1],'uint32') ;
ph.dataFormat = fread(fp,[1,1],'uint32') ;
ph.buff = fread(fp,[12,1],'uint8') ;
