At the NAB Show, Marek
Milbar of iBiquity Digital Corp. will give a detailed description of how HD
Radio can incorporate EAS on Tuesday of the Broadcast Engineering Conference.
Screen images from
iBiquity’s Active Alerts demo at the recent CES Show.
Radio offers the ability to deliver enhanced content to listeners. For FM,
multiple audio streams are available providing the broadcaster to offer unique
content options on a given channel. Additional capabilities include data
FCC rules require HD Radio
broadcasters to incorporate EAS into each audio stream. IBiquity Digital offers
a new technology called Active Alerts, by which compatible receivers can
provide the listener with enhanced EAS information via the Common Alerting
Protocol. JVC’s model KW-NT810HDT offers this feature; more models are expected
on the market.
is senior director for Advanced Programs Engineering at iBiquity; he’s been
working on IBOC technologies since joining Lucent Technologies in the late
1990s. His paper, “Enhanced Emergency Alerting Delivery Mechanism Over HD Radio
Signals,” addresses the features, technical details and advantages of the
Radio receiver that supports Active Alerts will be able to receive an EAS CAP
message from a station that is using Active Alerts-enabled HD Radio transmission
equipment,” Milbar said.
the receiver is off but powered, it scans the band for an HD Radio station with
the Active Alerts service, and may continue to do so until it finds a station
where an alert is being broadcast. The receiver then powers itself on and
delivers the alert. The receiver also potentially may allow certain user
settings, such as location, in order to receive only relevant alerts.
notifications can generate pop-up text messages and/or trigger wakeup/snooze
alerts on compatible receivers during weather alerts or local events.
To activate the functionality, Milbar said, a station
must make sure that its HD Radio equipment has current firmware, check its
network to allow IP connectivity between its alert processor and exporter, and
configure the alert processor using an existing menu.
Audio routing remains the same. The added alert text
and controls are delivered over SIS (Station Information Services), so the
service does not compete with regular audio or data services or their bandwidth
Milbar notes that the system relies on equipment that
HD Radio stations already have, so they need not incur additional spending.
this winter’s CES Show, iBiquity Jeff Jury said, “HD Radio Active Alerts offers
a more compelling and reliable public service capability to radio broadcasters
and the public.” Another advantage, for terrestrial radio stations, is to
maintain par with Internet and TV broadcasters who already have such rich
content delivery capabilities.