The original aptX algorithm was developed in the 1980s by Dr. Stephen Smyth as part of his Ph.D research at Queen's University Belfast School of Electronics, Electrical Engineering and Computer Science; its design is based on time domain ADPCM principles and eschews psychoacoustic auditory masking techniques.
Along with the rest of the Hawaiian Islands, Oahu is one of the largest and northernmost islands of Polynesia. In the greatest dimension, this volcanic island is 44 miles (71 km) long and 30 miles (48 km) across. The length of the shoreline is 227 miles (365 km).
In terms of its size, Illinois is the country's 25th-largest state, covering an area of 57,918 square miles (37 million acres). Of this area, 55,519 square miles (96 percent) is made up of land, while the remaining 2,395 square miles is covered by water.