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How good is IBOC?
G'day from Downunder
IBOC has been going in the US for some time now. Is it as good as the people at iBiquity said it was? Does it sound any better than FM stereo or AM stereo? Are receivers easy to buy? How is AM stereo doing in the US? Ian Melbourne |
In article , Seagull wrote:
IBOC has been going in the US for some time now. Is it as good as the people at iBiquity said it was? Does it sound any better than FM stereo or AM stereo? IBOC FM is a mixed bag. It doesn't sound all that wonderful, but again I think most of the FM sound quality issues have to do with overprocessing more than anything else, and digital transmission doesn't do anything about that. IBOC AM sounds pretty awful to my ears. Much worse than good wideband AM transmission with a good receiver (which is something hardly anyone here will ever get a chance to hear, I am sorry to say). Are receivers easy to buy? No. Typical consumers don't even know they exist. How is AM stereo doing in the US? Do we have AM stereo here? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
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"Scott Dorsey" wrote in message ... IBOC FM is a mixed bag. It doesn't sound all that wonderful, but again I think most of the FM sound quality issues have to do with overprocessing more than anything else, and digital transmission doesn't do anything about that. I am "in the building" with one of these, and on the available receivers, FM IBOC has definite advantages, one you realize you are hearing audio without the preemphasis curve we are used to hearing on FM. That done, it sounds better to everyone who has heard real-world music programming on it. IBOC AM sounds pretty awful to my ears. Much worse than good wideband AM transmission with a good receiver (which is something hardly anyone here will ever get a chance to hear, I am sorry to say). While it will take time to enter the market, the sound of AM IBOC now is very, very good. When running music on the one of these that is also in the building, it sounds better than some local FMs. |
... and creates significant adjacent channel interference
problems. For the latter reason, its use is forbidden at night. And likewise, it should be forbidden for daytime use also since important componants of the signal are outside of the defined bandwidth. If all stations go IBOC then the mutual interferance will severely reduce the coverage areas of all stations, even the 50KWs. IBOC = I.nterfering B.adly O.ff C.hannel Bob Radil A ?subject=NewsgroupRes ponse" E-Mail /A |
"Bob Radil" wrote in message ... ... and creates significant adjacent channel interference problems. For the latter reason, its use is forbidden at night. And likewise, it should be forbidden for daytime use also since important componants of the signal are outside of the defined bandwidth. If all stations go IBOC then the mutual interferance will severely reduce the coverage areas of all stations, even the 50KWs. Most stations don't care today about anything except their home metro groundwave coverage. Any damage in the secondary or skywave coverage areas is irrelevant. |
On 12 Jun 2004 16:30:53 GMT, "David Eduardo"
wrote: Most stations don't care today about anything except their home metro groundwave coverage. Any damage in the secondary or skywave coverage areas is irrelevant. As an employee of one of several AM station owners, including CCU and Disney, involved in a battle over interference from stations in Northern Mexico, I beg to differ. We care a lot, and have joined in legal action to protect our signal. There is also some evidence that IBOC interference can affect home metro groundwave coverage of adjacent channel stations. Mark Howell |
On 13 Jun 2004 22:49:37 GMT, Mark Howell wrote:
As an employee of one of several AM station owners, including CCU and Disney, involved in a battle over interference from stations in Northern Mexico, I beg to differ. We care a lot, and have joined in legal action to protect our signal. There is also some evidence that IBOC interference can affect home metro groundwave coverage of adjacent channel stations. Between the cubans and the mexicans, I can't get WLS reliably here in Charlotte at night. I also have trouble with a lot of the locals. (I don't know if they are flea power at night or what, but there is almost nothing on the band (other than WBT) that seems to come in clearly at night. sigh I dread seeing what IBOC will do to the local scene.. will get even worse. |
How's FM Quadrophonic doing?
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"Mark Howell" wrote in message ... On 12 Jun 2004 16:30:53 GMT, "David Eduardo" wrote: Most stations don't care today about anything except their home metro groundwave coverage. Any damage in the secondary or skywave coverage areas is irrelevant. As an employee of one of several AM station owners, including CCU and Disney, involved in a battle over interference from stations in Northern Mexico, I beg to differ. We care a lot, and have joined in legal action to protect our signal. But you are concened about the damage to the local signal, not the abilty to hear an AM hundreds of miles form its city of license. There is also some evidence that IBOC interference can affect home metro groundwave coverage of adjacent channel stations. But not much. I can listen to the 1050 in the Riverside market within 10 miles of the KTNQ 50 kw IBOC site. |
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