In which transmission are sound and video signals transmitted simultaneously?

In which transmission are sound and video signals transmitted simultaneously?
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T.V. Transmission
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Any way to muffle the sound from the turn signals on my Ford F150 truck?

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Last Answer : answer:Ha! Many of my patients notice that as one of the first things they can hear again after getting hearing aids. My mother-in-law texted us a couple minutes after they left the office because she was so ... or turn up the tunes, you'll drown them out. Or you could get earplugs for in the car.