The industry spent much of that time fighting over a plan to move FM and AM to a new spectrum band to accommodate digital.
The Digital Radio Working Group (DRWG) says that by 2015, less than half of all radio listening could be via traditional FM or AM sets.
But by 1978, music had migrated to FM, leaving AM in a programming lurch.
Telephony, network and cable television, music-oriented FM radio, AM talk radio, even satellite radio and television all see their foundations crumbling under the onslaught of the Internet.
In the not-too-distant future, a car with a radio that receives only AM or FM will qualify as an antique.
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When an AM or FM radio station plays a song, the composer gets a royalty payment, but the performer doesn't.
There are 13, 000 AM and FM broadcast radio stations in the U.S., and just over 2, 000 of them have been converted to HD.
At issue: whether AM and FM radio stations should pay royalties to performers on recorded music played over the airwaves, and if so, what those rates should be.
Within five years, says Jeff Jury , Ibiquity vice president, analog AM and FM radio signals will go digital, and carry data over the air as well as traditonal audio signals.
TuneIn lets people listen to the world's music, sports, talk and news from wherever they are, with over 70, 000 AM, FM, HD and Internet radio stations and more than two million on-demand programs streaming from every continent.
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Despite the momentum in favor of the MusicFIRST Coalition, more than half of the House of Representatives has signed on to a resolution that opposes "any new performance fee, tax, royalty, or other charge" on AM and FM broadcasters.
Robert Struble , IBiquity's president and chief executive, says the technology will be incorporated into digital AM and FM radio systems that should start showing up in six cities around the U.S.--including New York and Los Angeles by January.
"Where before users would pick up their phone, taking their eyes off the road and hands off the steering wheel while driving to select a station and hit play, AppLink makes all of that functionality available through voice control, just like managing AM and FM radio or your MP3 player through SYNC, " said Julius Marchwicki, SYNC product manager.
There have been attempts to crack those stereotypes, but if anything, it's even harder than it was in Hendrix's day, a time when AM Top 40 had plenty of variety, free-form FM radio welcomed experimenting and record labels strained to catch up with it all.
The new technology will finally let AM stations, long limited by bandwidth one-tenth the size of FM, broadcast in stereo at a quality equal to that of analog FM.
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