SPDIF delay question.
 

You know how it goes. You have to replace one thing, then nothing else
works quite right, so you end up replacing everything else....

I need to add a delay to my digital audio to sync it with the digital TV.
Any recommendations, that don't include listening to the TV speakers?
Are there AV amps with variable delay on the SPDIF (coax or optical)
inputs? Standalone boxes? Or just build one with a couple of ICs
such as http://focus.ti.com/docs/prod/folder...t/tpa5052.html ?

--
Eiron.

SPDIF delay question.
 

"Eiron" wrote in message
...
You know how it goes. You have to replace one thing, then nothing else
works quite right, so you end up replacing everything else....

I need to add a delay to my digital audio to sync it with the digital TV.
Any recommendations, that don't include listening to the TV speakers?
Are there AV amps with variable delay on the SPDIF (coax or optical)
inputs? Standalone boxes? Or just build one with a couple of ICs
such as http://focus.ti.com/docs/prod/folder...t/tpa5052.html ?

--
Eiron.


Sorry, not an answer to your question, but I have the opposite - I need to
delay the video :-) I started thinking about if it was possible, but then
came to the conclusion even if I could manage to sync sound and pictures at
one point, it would probably still drift over time because there isn't a
master clock controlling the two.... thoughts anyone?

TW.

SPDIF delay question.
 

"Tex Wade"

Sorry, not an answer to your question, but I have the opposite - I need to
delay the video :-) I started thinking about if it was possible, but then
came to the conclusion even if I could manage to sync sound and pictures
at one point, it would probably still drift over time because there isn't
a master clock controlling the two.... thoughts anyone?



** Every foot you move closer or further away from the screen means a
1millisecond error in the timing.

Same goes for real people speaking too.

How can we ever solve this dilemma ????



....... Phil

SPDIF delay question.
 

Tex Wade wrote:
"Eiron" wrote in message
...
You know how it goes. You have to replace one thing, then nothing else
works quite right, so you end up replacing everything else....

I need to add a delay to my digital audio to sync it with the digital TV.
Any recommendations, that don't include listening to the TV speakers?
Are there AV amps with variable delay on the SPDIF (coax or optical)
inputs? Standalone boxes? Or just build one with a couple of ICs
such as http://focus.ti.com/docs/prod/folder...t/tpa5052.html ?

--
Eiron.


Sorry, not an answer to your question, but I have the opposite - I need to
delay the video :-) I started thinking about if it was possible, but then
came to the conclusion even if I could manage to sync sound and pictures at
one point, it would probably still drift over time because there isn't a
master clock controlling the two.... thoughts anyone?

TW.



I find that the best way to change the sync between sound and vision on
digital TV is to switch to another channel for a few moments, then back
again. The sync relationship will be changed. Do that a few times and at
some point you will likely end up with barely adequate sync.

I guess, though that it would not be difficult to make a box with a
couple of bucket brigade delays in - one each for video and audio. A
single rotary knob could adjust the delay in each with max video delay
at the left and max sound delay on the right. For digital TV as it is at
the moment, a 10 second range should just about cover it.

d

SPDIF delay question.
 

In article , Tex Wade
tex.wade@ntl.? scribeth thus

"Eiron" wrote in message
...
You know how it goes. You have to replace one thing, then nothing else
works quite right, so you end up replacing everything else....

I need to add a delay to my digital audio to sync it with the digital TV.
Any recommendations, that don't include listening to the TV speakers?
Are there AV amps with variable delay on the SPDIF (coax or optical)
inputs? Standalone boxes? Or just build one with a couple of ICs
such as http://focus.ti.com/docs/prod/folder...t/tpa5052.html ?

--
Eiron.


Sorry, not an answer to your question, but I have the opposite - I need to
delay the video :-) I started thinking about if it was possible, but then
came to the conclusion even if I could manage to sync sound and pictures at
one point, it would probably still drift over time because there isn't a
master clock controlling the two.... thoughts anyone?

TW.



Are you trying to do something along the lines of listen to a radio
simulcast on TV?..

If so the TV sound is at a higher bit rate that the excuse for DAB
radio.

Also in the UK the sound and picture often don't marry up due to the
**** poor standards of broadcasting these days!..
--
Tony Sayer

SPDIF delay question.
 

Don Pearce wrote:

I find that the best way to change the sync between sound and vision on
digital TV is to switch to another channel for a few moments, then back
again. The sync relationship will be changed. Do that a few times and at
some point you will likely end up with barely adequate sync.
d

I've noticed that too. Any idea why it happens?
Roger Thorpe

SPDIF delay question.
 

"tony sayer" wrote in message
...

Are you trying to do something along the lines of listen to a radio
simulcast on TV?..

If so the TV sound is at a higher bit rate that the excuse for DAB
radio.

Irrelevant. There's no such thing as a "simulcast" anymore, the processing
delays inherent in digital broadcasting make it impossible. My guess was
that the OP was using a digital audio output from his TV to connect to an AV
amplifier. In which case he should complain to the manufacturer of the TV.
Or possibly there is a delay adjustment lurking in the menu of one or the
other.


Also in the UK the sound and picture often don't marry up due to the
**** poor standards of broadcasting these days!..
--

There must be something wrong with my Sky+ set-up as I hardly ever get
lip-sync errors. On the very rare occasions when I get them when playing
back a recording, pausing and then unpausing the playback cures the problem.

David.

SPDIF delay question.
 

"David Looser"

My guess was that the OP was using a digital audio output from his TV to
connect to an AV amplifier. In which case he should complain to the
manufacturer of the TV.


** This lick explains what the dopey OP is likely on about:

http://www.audioholics.com/education...xt-big-feature



....... Phil

SPDIF delay question.
 

In article ,
Eiron wrote:
You know how it goes. You have to replace one thing, then nothing else
works quite right, so you end up replacing everything else....

I need to add a delay to my digital audio to sync it with the digital TV.
Any recommendations, that don't include listening to the TV speakers?

If you route the signal through the TV and use the line output to feed the
external amp this should give the required delay. Or at least mine does.

Are there AV amps with variable delay on the SPDIF (coax or optical)
inputs? Standalone boxes? Or just build one with a couple of ICs
such as http://focus.ti.com/docs/prod/folder...t/tpa5052.html ?

--
*Prepositions are not words to end sentences with *

Dave Plowman London SW
To e-mail, change noise into sound.

SPDIF delay question.
 

Dave Plowman (News) wrote:

If you route the signal through the TV and use the line output to feed the
external amp this should give the required delay. Or at least mine does.

It seems to help but my TV doesn't output 5.1, only downmixed stereo
(which includes Prologic.)

--
Eiron.