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uk.tech.tv.sky (Sky Television) (uk.tech.tv.sky ) Technical issues of Sky television.

Sound delay on Sky box( and maybe others)



 
 
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  #1  
Old June 11th 10, 01:32 PM posted to uk.tech.digital-tv,uk.tech.tv.sky
Gary[_4_]
external usenet poster
 
Posts: 407
Default Sound delay on Sky box( and maybe others)

I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .

My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.

the two amps sound good together.

Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.

I wanted to match up the sound using the delay function but this is harder
than you think.

Any tips as to how to do it. The main problem is it will only adjust whilst
playing live sound so recordings don't work. ( unless you know better)

I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?


Thanks in advance

Gary

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  #2  
Old June 11th 10, 02:47 PM posted to uk.tech.tv.sky
Vincent
external usenet poster
 
Posts: 563
Default Sound delay on Sky box( and maybe others)

On Fri, 11 Jun 2010 14:32:17 +0100, "Gary"
wrote:

I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .

My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.

the two amps sound good together.

Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.

I wanted to match up the sound using the delay function but this is harder
than you think.

Any tips as to how to do it. The main problem is it will only adjust whilst
playing live sound so recordings don't work. ( unless you know better)

I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?


Thanks in advance

Gary


You can adjust the sound delay (on the optical output to your 5.1
sound system) while a show is on (not a recording). Put a suitable
channel on, and go to the sound settings and press select and it will
show (and allow you to hear) the sound of the channel. You can then
use left/right to increase/decrease the delay.

If you have the sound up to a level where you can hear both TVs, then
all you need to do is adjust the delay until the echo goes away. If
you adjust the delay in the wrong direction the echo will get worse.

However, you're going to have a whole bunch of problems.

You mentioned you use Phono, HDMI, and 5.1 (I assume via Optical). All
of these have different delays. The phono is instant, the HDMI is
slightly slower as the sound has to be encoded and decoded to/from
digital, so some data has to be sent before the decoding can start.
The Optical is on its own delay (as set in the settings). So, there's
three levels of delay there, and at best you can only match Optical to
either of the other two, as it's the only adjustable one.

But, your biggest problem will be that the optical delay is a DELAY
meant to slow down the audio getting to your TV. Modern TVs do a ton
of processing on the picture, and LCD and Plasma screens themselves
have a delay of their own before the pixels illuminate in the desired
colour. So, the picture is always a few 10s of milliseconds behind the
audio. Hence, you have an audio DELAY setting. This is probably the
opposite of what you want. You probably want the 5.1 system to catch
up to your Phono / HDMI audio. Setting the delay to 0 might make it
close to the Phono.

With the HDMI delay you have a different issue. The TV manufacturer
will know what delay the screen has, and add a pre-set delay to the
HDMI sound input. So there will be no way to match the HDMI audio to
the Phono.

Finally, to rub salt in the wound, different channels on Sky have
different delays in a right mess of an attempt to get sound on HD
channels synchronised with the sound on SD channels. It's a right mess
because at first HD took longer to display than SD, but this is not
always the case. For example modern TVs will do a shed load of
processing on SD content to upscale it to HD, but often tend to leave
HD content alone other than to increase the frame rate. So, on some
TVs, HD displays faster than SD.

In short, you have to deal with three different delays from your
hardware, different delays from different channels, and you can only
adjust one delay (optical), and whatever you set will either mean the
sound is in sync with one of your other devices, OR it will be in
synch with ONE channel or set of channels.

--
Vincent
  #3  
Old June 11th 10, 03:07 PM posted to uk.tech.tv.sky
Gary[_4_]
external usenet poster
 
Posts: 407
Default Sound delay on Sky box( and maybe others)


"Vincent" wrote in message
...
On Fri, 11 Jun 2010 14:32:17 +0100, "Gary"
wrote:

I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .

My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.

the two amps sound good together.

Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.

I wanted to match up the sound using the delay function but this is harder
than you think.

Any tips as to how to do it. The main problem is it will only adjust
whilst
playing live sound so recordings don't work. ( unless you know better)

I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?


Thanks in advance

Gary


You can adjust the sound delay (on the optical output to your 5.1
sound system) while a show is on (not a recording). Put a suitable
channel on, and go to the sound settings and press select and it will
show (and allow you to hear) the sound of the channel. You can then
use left/right to increase/decrease the delay.

If you have the sound up to a level where you can hear both TVs, then
all you need to do is adjust the delay until the echo goes away. If
you adjust the delay in the wrong direction the echo will get worse.

However, you're going to have a whole bunch of problems.

You mentioned you use Phono, HDMI, and 5.1 (I assume via Optical). All
of these have different delays. The phono is instant, the HDMI is
slightly slower as the sound has to be encoded and decoded to/from
digital, so some data has to be sent before the decoding can start.
The Optical is on its own delay (as set in the settings). So, there's
three levels of delay there, and at best you can only match Optical to
either of the other two, as it's the only adjustable one.

But, your biggest problem will be that the optical delay is a DELAY
meant to slow down the audio getting to your TV. Modern TVs do a ton
of processing on the picture, and LCD and Plasma screens themselves
have a delay of their own before the pixels illuminate in the desired
colour. So, the picture is always a few 10s of milliseconds behind the
audio. Hence, you have an audio DELAY setting. This is probably the
opposite of what you want. You probably want the 5.1 system to catch
up to your Phono / HDMI audio. Setting the delay to 0 might make it
close to the Phono.

With the HDMI delay you have a different issue. The TV manufacturer
will know what delay the screen has, and add a pre-set delay to the
HDMI sound input. So there will be no way to match the HDMI audio to
the Phono.

Finally, to rub salt in the wound, different channels on Sky have
different delays in a right mess of an attempt to get sound on HD
channels synchronised with the sound on SD channels. It's a right mess
because at first HD took longer to display than SD, but this is not
always the case. For example modern TVs will do a shed load of
processing on SD content to upscale it to HD, but often tend to leave
HD content alone other than to increase the frame rate. So, on some
TVs, HD displays faster than SD.

In short, you have to deal with three different delays from your
hardware, different delays from different channels, and you can only
adjust one delay (optical), and whatever you set will either mean the
sound is in sync with one of your other devices, OR it will be in
synch with ONE channel or set of channels.

--
Vincent


Ok the sound from the phono and the sound from the 5.1 match. The delay
applied to them is the same. as you adjust the delay they both change.

As to synchronising to the picture that is a different matter.

I figured if I can synchronise the HDMI to the Optical I have by default
matched the panel. BUT as for errors from sky etc I am not even going to go
there.

My TV sound is used for Night viewing and convenience. The 5,1 is used when
we sit down to watch the TV or a movie. and the TV in the kitchen is on
when we are doing nothing in particular. that's when the problem occurs and
i have tried to do the adjustments but it is difficult. as i said the ears
play tricks on you.

Gary


  #4  
Old June 11th 10, 03:46 PM posted to uk.tech.digital-tv,uk.tech.tv.sky
Dave Plowman (News)
external usenet poster
 
Posts: 4,309
Default Sound delay on Sky box( and maybe others)

In article AVqQn.11940$4w7.11081@hurricane,
Gary wrote:
I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .


My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.


the two amps sound good together.


Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.


I wanted to match up the sound using the delay function but this is
harder than you think.


Any tips as to how to do it. The main problem is it will only adjust
whilst playing live sound so recordings don't work. ( unless you know
better)


I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?



Has the TV also got phono out to feed an external amp? If so this should
have the delay built in. Of course the sound will now be out of sync when
watching in the kitchen...

I have the same problem, and can route the sound by two different ways.
One makes it in sync between rooms, one in sync with the pictures.

--
*When it rains, why don't sheep shrink? *

Dave Plowman London SW
To e-mail, change noise into sound.
  #5  
Old June 11th 10, 05:08 PM posted to uk.tech.digital-tv,uk.tech.tv.sky
Brian Gaff
external usenet poster
 
Posts: 3,601
Default Sound delay on Sky box( and maybe others)

Sounds to me its the picture that you need control over as well.

Did nobody actually think about this before they made their designs?
In answer to your sig question. Sheep have evolved with rain, so are imune
to shrinkage, but dont use detergent whatever you do.

Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Dave Plowman (News)" wrote in message
...
In article AVqQn.11940$4w7.11081@hurricane,
Gary wrote:
I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .


My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.


the two amps sound good together.


Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.


I wanted to match up the sound using the delay function but this is
harder than you think.


Any tips as to how to do it. The main problem is it will only adjust
whilst playing live sound so recordings don't work. ( unless you know
better)


I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?



Has the TV also got phono out to feed an external amp? If so this should
have the delay built in. Of course the sound will now be out of sync when
watching in the kitchen...

I have the same problem, and can route the sound by two different ways.
One makes it in sync between rooms, one in sync with the pictures.

--
*When it rains, why don't sheep shrink? *

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



  #6  
Old June 11th 10, 05:49 PM posted to uk.tech.digital-tv,uk.tech.tv.sky
Gary[_4_]
external usenet poster
 
Posts: 407
Default Sound delay on Sky box( and maybe others)


"Dave Plowman (News)" wrote in message
...
In article AVqQn.11940$4w7.11081@hurricane,
Gary wrote:
I have a 2 year old Pany Plasma with Freesat HD. I use a Sky HD box .


My TV sound is via HDMI and i use a Kenwood AV amp for 5.1 etc
The Phono sound from the sky box is sent to the TV in the Kitchen and a
little Amp for good sound.


the two amps sound good together.


Because of the delay on the TV the sound echo's if you have on the Amp
sound and the TV sound at the same time. As the kitchen is off the Living
room obviously the sound leaks. and so I have a problem.


I wanted to match up the sound using the delay function but this is
harder than you think.


Any tips as to how to do it. The main problem is it will only adjust
whilst playing live sound so recordings don't work. ( unless you know
better)


I will get there but it is frustrating. The ears play tricks on you. (
frequency dependant etc) . Anyone know how big the delay is on a pany
Plasma.?



Has the TV also got phono out to feed an external amp? If so this should
have the delay built in. Of course the sound will now be out of sync when
watching in the kitchen...

I have the same problem, and can route the sound by two different ways.
One makes it in sync between rooms, one in sync with the pictures.

--
*When it rains, why don't sheep shrink? *

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


That is a good point. I may do that


 




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