In-band on-channel (IBOC) is a method of transmitting digital and analog radio broadcast signals simultaneously on the same frequency allowing older analog radios to still receive the signal. IBOC is emerging in the United States and is expected to spread around the world. The technology, fundamentally developed by iBiquity Digital Corporation and now licensed by them under the brand name HDRadio, has the support of broadcasters as well as manufacturers of broadcast transmitters, consumer radios, and numerous peripheral product and services. An industry consensus standard, NRSC-5, was adopted...