• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
  • The forum software that supports hummy.tv has been upgraded to XenForo 2.0!

    This is a major upgrade which changes the look and feel of the forum somewhat but brings a host of improvements too. Please bear with us as we continue to tweak things and report any issues or suggestions in Site/Forum Issues.

Volume control !!

Black Hole

May contain traces of nut
#21
Well, it certainly ain't anything to do with the HDMI cable! Care to explain how a serial digital communications interface can selectively drop out sounds?
 
OP
OP
Scotty66

Scotty66

New Member
#22
I am not saying that it can blackhole I am just trying whatever I can to sort it out. Unfortunately the changing of 1080p to i did not sort out the problem as expected. Any ideas appreciated.

Scotty.
 
#23
Well, it certainly ain't anything to do with the HDMI cable! Care to explain how a serial digital communications interface can selectively drop out sounds?
I am not saying that it can blackhole I am just trying whatever I can to sort it out. Unfortunately the changing of 1080p to i did not sort out the problem as expected. Any ideas appreciated.

Scotty.
Baffled, firstly turn up the box volume using the box remote to near max, adjusting the TV volume to suit. Now control the volume using the TV volume control only. Does this fix the problem ? If so switch to the TV tuner and listen to the TV volume, switch back to the Freesat box and trim level to roughly the same. Are the problems resolved ?
 
OP
OP
Scotty66

Scotty66

New Member
#24
Hi Graham,

tried that everything is working fine, volume levels etc perfect but most of the time although not always when someone reaches the end of their sentence say on a news item it drops out so their is no background noise and then when they start talking again it is fine.

I stress to add none of what they are saying is lost and the drop pout may only be a second or millisecond but it seems to have been well discussed when I performed a search via Google. When I go back to Freeview to watch it does not happen and I have to confess I thought the mrs was barking until I picked up on it for myself.
 

Trev

The Dumb One
#27
Because he can! When you are grasping at straws, you'll try almost anything, however unlikely to positively eliminate it. Or don't you hold with that theory? 'Never' events do happen.
@ Scotty Well, those sites are talking sh1t. An intermittently faulty HDMI cable could cause intermittent complete signal drop out, but not what you describe.
Some sites (and Currys/PCWorld) will try to get you to spend obscene amounts of money on HDMI cables claiming they give a better picture. They are also talking s***. Oxygen free cables is another one.
 
Last edited:

Trev

The Dumb One
#29
Its ones and zeros. They are either there or not there, there are no half measures. And if they are there you will get the best picture/sound that you are going to get, and if they are not there you get nowt.
 

Trev

The Dumb One
#31
Yes, I agree, but if you don't know those principles, you try anything that anyone says. If you knew nothing about it, why would you suspect that HDMI can interfere with UHF on badly screened/terminated cables. It is oft said to change the HDMI cable to stop picture breakup, not because the cable is faulty and causing picture break up itself, but because it is causing UHF interference that is causing the picture break up, as you and I well know, but Scotty and others might not appreciate that fact.
And blind people have to shoot in the dark;)
 
Last edited:
#32
Check with the TV maker for a possible software update. Sounds to me like a issue with how the TV handles audio on HDMI. You could try using the analogue outputs to a scart on the TV as a test. If the audio is fine on analogue would tend to confirm above.
 

Black Hole

May contain traces of nut
#33
That would certainly give us more information to go on. In my view, the symptoms indicate something to do with subtitles, audio description, or some other alternative audio stream.
 

Luke

Well-Knwοn Мember
#34
As per same discussion on another forum found via Google Search this seems to be a common issue corrected by changing from 1080p to 1080i, this seems for the moment to have fixed it but still interested why this happens.
Could you provide a link or the search terms that you used? It might help save a bit of reinventing the wheel in identifying the underlying cause.

In my view, the symptoms indicate something to do with subtitles, audio description, or some other alternative audio stream.
The Audio Description on satellite works differently to freeview. Unlike freeview the broadcast Audio Description satellite track contains the audio description pre mixed with the normal sound track. This means that unlike DTT there are no AD fade flags for the box manufacturer to use or abuse. Unlike DTT there is nothing to indicate the beginning and end of an AD snipet apart from the listeners' interpretation of the audio.
 
#35
That would certainly give us more information to go on. In my view, the symptoms indicate something to do with subtitles, audio description, or some other alternative audio stream.
As Luke said, on satellite the audio description track is a completely seperate track. On a HD channel with AD you have a primary track using ac3 (2.0 or 5.1) and a seperate 2.0 (stereo) mp2 audio track mixed with the normal audio plus the audio description. You have to select one or the other. Freeview elected to use aac audio as this provides the capability to mix a AD only track with the main audio, this is clearly a more efficient process as the AD track only has to carry the spoken description. You can't use this system on satellite as pretty well all the kit do not support aac decoding (Bit like 1080p25 support on the newer DVB-T2 terrestial freeview service).