IBOC on FM…Just as Inefficient!
In-Band, On Channel Digital Audio Broadcasting (IBOC-DAB), or low-definition
radio, has arrived on FM in
Radio One: WFUN-FM 95.5 Bethalto, IL
University of Missouri-St. Louis: KWMU 90.7 St. Louis, MO
CBS Radio: KYKY 98.1 St. Louis, MO
This is more proof that going digital is not a good idea for FM radio, either. Engineers who are supportive of IBOC (and the logic is seriously questioned by the vast majority of broadcast engineers) don’t seem to realize the damage they’re doing to first and second adjacent channel signals. Digital signals will only be capable of audio quality below FM quality. If you’ve ever made a cell phone call in a weak signal area…this is what IBOC will sound like in weak signal areas. Speech and music will be unintelligible. FM radio is already capable of multi-channel audio (it’s called Subsidiary Communications Services, or SCS). In addition, stations broadcasting in “HD Radio” have little or no Stereo separation on their analog signals. With no market for IBOC in the United States, then it’s no wonder the logic of the National Association of Broadcasters and the Corporation for Public Broadcasting is fatally flawed in this area. Analog is the only way to preserve the technical integrity of FM broadcasting.