Methods and systems lor temporally aligning audio samples of digital and analog portions ol a radio broadcast signal involve receiving a radio broadcast signal having analog and digital portions; separating the analog and digital portions; retrieving a stored first time interval of an approximate time...http://www.google.com.hk/patents/US8180470?utm_source=gb-gplus-share專利 US8180470 - Systems and methods for fine alignment of analog and digital signal pathways
