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).
Due to volcanic activity, Hawaii is actually increasing in size. Kilauea Volcano has been erupting since 1983, and had added almost one square mile (about 640 acres, 2.6 sq/km, or 260 hectares) of new land to the state by 2002. The chart below shows the relative sizes of the 50 states and the District of Columbia.