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The Score processing

M

musicfanpete

Guest
Does anyone have an idea with what is going on with their signal. It has sounded somewhat muffled over the past four or five days. Do they not realize what is going on, or are they in the process of upgrading their signal?
 
Can't check now, but a week or so ago they were clipping and splattering from 640 khz to 700 khz.
Let's hope they are taking care of that.
Simple overmodulation, but it's causing bad spectral regrowth off their iboc sidebands.
I hope they fix it because they're making WSM sound bad.
 
Tom Wells said:
Can't check now, but a week or so ago they were clipping and splattering from 640 khz to 700 khz.
Let's hope they are taking care of that.
Simple overmodulation, but it's causing bad spectral regrowth off their iboc sidebands.
I hope they fix it because they're making WSM sound bad.
Click to expand...

Thanks for the explanation. Since I'm not an expert in radio signal processing, I'm assuming by overmodulation you mean they overcompensated when trying to fix that splattering, and now the signal sounds too muffled instead of more crisp sounding like it should be. And what does WSM mean?
 
You are correct. Cutting out some of the "sharpness" should lead to less overmodulation, which means
basically turning up their audio too loud, resulting in a signal that ever so briefly "winks out" during each cycle of the sound
that is loud enough to do this. During these moments, there is a rasp and splatter on adjacent frequencies,
660, 650, 640 and going the other way 680, 690 and 700.
The sparky noises I was hoping they'd address haven't really changed any with the audio change you have noted.

WSM is on AM 650 is Nashville and I listen frequently to them on the way to work at night. I'm in Chicago.
 
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