Eiron wrote:

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.)

I think a lot of recievers will add delay for you. The first one to come
up on the Superfi website (Onkyo HTR508 at 169 ukp) will give you up to
100 milliseconds. I'm sure fancier models will too.
see "advanced setup" on
http://www.superfi.co.uk/extras/Onky...508-manual.pdf

Roger Thorpe

Phil Allison wrote:
"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

Thanks Phil. That useful link lists some AV receivers with a digital delay.
Just the excuse to get rid of the nasty Sherwood amp and get a nice Yamaha.

From the Yamaha RX-V1400 manual
"... to delay the sound output and synchronize it with the video image.
This may be necessary when using certain LCD monitors or projectors.
Choices: 0 to 240 (ms)"

Or I could just put the speakers at the bottom of the garden. :-)

--
Eiron.

Eiron wrote:

I need to add a delay to my digital audio to sync it with the digital TV.

http://www.felston.com

--
Adrian C

In article , David Looser
scribeth thus
"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.

Yes fair enough;!..

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.


Don't know if they do that..

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.



--
Tony Sayer

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.

Dare one ask why ?


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 ?

Input format I2S (standard DSP I/F) not SPDIF.

You'll need to design a complete unit to use that and no I can't think of
anything handy to do the job.

Analog signal path maybe ?

Graham

Eiron wrote:

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.)

Why doesn't it work properly in the first place ?

Take it back for a refund ?

Graham

Eiron wrote:

From the Yamaha RX-V1400 manual
"... to delay the sound output and synchronize it with the video image.
This may be necessary when using certain LCD monitors or projectors.
Choices: 0 to 240 (ms)"

Shame it doesnt go negative too ! ;~)

Graham

Eeyore wrote:

Dare one ask why ?

This is a consequence of complicated video signal processing inside flat
panel televisions - the picture takes more time to display than the
moment the matching sound comes to the speakers. Normally for a internal
video source, the sound has to be thus delayed to match the picture.

If an external source like a set top box, or DVD is used - and
pre-display audio is routed to an external amp/speaker system then lip
sync is an issue, unless a digital delay is added (typically receivers
have this as an option - and so do some set top boxes)

The "correct" answer is to get a proper television set with a full box
of glass and air behind it, decent contrast and dynamics, and no fancy
video processing nonsense ;-)

--
Adrian C

In article , Adrian C
wrote:


The "correct" answer is to get a proper television set with a full box
of glass and air behind it, decent contrast and dynamics, and no fancy
video processing nonsense ;-)

In time - I hope - the alternative proper answer will be that the makers of
pixel-based screens actually give them the same number and arrangement of
pixels as the images, and can update pixels without so much faffing about
'processing'. But as yet, I'd not hold my breath. Too many 'HD ready' (i.e.
not actually HD) screens to shift out of the warehouse before that...

Slainte,

Jim

--
Change 'noise' to 'jcgl' if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

"Jim Lesurf" wrote in message
...
In article , Adrian C
wrote:


The "correct" answer is to get a proper television set with a full box
of glass and air behind it, decent contrast and dynamics, and no fancy
video processing nonsense ;-)

In time - I hope - the alternative proper answer will be that the makers
of
pixel-based screens actually give them the same number and arrangement of
pixels as the images, and can update pixels without so much faffing about
'processing'. But as yet, I'd not hold my breath. Too many 'HD ready'
(i.e.
not actually HD) screens to shift out of the warehouse before that...


That would be a lot easier if all images had the same number and arrangement
of pixels, but the chance of that happening any time soon is minimal. Even
with a "proper" television set with glass (but no air, the CRT contains a
vacuum) a lot of "faffing about" is needed to cope with different aspect
ratios etc.

David.