The system 10, where the location of {TAIL ~ at least a portion} of {HEAD ~ the digital watermark} is represented by at least one of the following: sample, frequency, phase or combinations thereof 
The system 10 , where the location of { TAIL ~ at least a portion } of { HEAD ~ the digital watermark } is represented by at least one of the following : sample , frequency , phase or combinations thereof
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH