Lip Sync Problem: cable length

[jsmetona]

i have recently relocated all the av components from the front of the room on the tv to a closet at the back of the room. i installed a 50 foot component cable to connect the dvd player and hd box to the tv. now it seems like the audio and video are out of sync. i notice this on dialoges in moves, its seems like the audio might be a few milliseconds ahead of the video. is this possible? there is about a 6 foot toslink cable connecting my dvd player to the reciever. Is it even possible to get such a delay from a long video cable or am i just imagining this? If it is possible, how can i go about delaying the audio?

 

[jaxvon]

Most AV recievers have audio delay functions, that's how you can fix the problem. And believe me, the problem is acoustical or processing related (though doubtfully processing). The signals in a video or audio cable travel so fast the a 50ft cable is negligible.

 

[mtrycrafts]

i have recently relocated all the av components from the front of the room on the tv to a closet at the back of the room. i installed a 50 foot component cable to connect the dvd player and hd box to the tv. now it seems like the audio and video are out of sync. i notice this on dialoges in moves, its seems like the audio might be a few milliseconds ahead of the video. is this possible? there is about a 6 foot toslink cable connecting my dvd player to the reciever. Is it even possible to get such a delay from a long video cable or am i just imagining this? If it is possible, how can i go about delaying the audio?

As jaxvon indicated the signal travles about 1ft per nanoseconds, or in this case 50 nanoseconds.

 

[MarieonCape]

I've waited years to use this!

As jaxvon indicated the signal travles about 1ft per nanoseconds, or in this case 50 nanoseconds.

Actually I have a nanosecond somewhere around here. Really. And I thought it was closer to 9 inched than foot. It was given to me by Dr. Grace Hopper (Navy, Admiral, "bug", look her up) when she retired and worked at Digital. She gave out wires cut to a nanosecond length to demonstrate to hardware designers how much time the circuit they were designing would take. Of course this was more important when circuits weren't microscopic.

 

[mtrycrafts]

Actually I have a nanosecond somewhere around here. Really. And I thought it was closer to 9 inched than foot. It was given to me by Dr. Grace Hopper (Navy, Admiral, "bug", look her up) when she retired and worked at Digital. She gave out wires cut to a nanosecond length to demonstrate to hardware designers how much time the circuit they were designing would take. Of course this was more important when circuits weren't microscopic.

OK, you win, if the right DC and Vp are used
Or, it may be longer or shorter