Hi,
I got referred to this forum by a friend who works in the audio/video industry. I hope you guys will be able to pin point my problem.
The Problem
When connecting a pc via HDMI to the tv and the tv is connected via soundhsare to the sound bar, the audio grows slowly to be out of sync. The sound is late, not in advanced.
By slowly, I mean it is good at the beginning and the off sync delay just grows over time. At one point, the sound is late of about 1 second. It takes about 5 minutes for it to be completely off sync that much.
When the audio is off sync and I press pause, the audio continues to play for about 1 second. The opposite is true, pressing play again means a silent image for about 1 second.
Once off sync, the only I found to 'fix' the problem is to turn off the sound bard, on again. It works temporarily, but the problem comes back.
This problem occurs with firefox flash movies (youtube, facebook, ...) and inside Kodi video player.
My Setup
TV model
UN50HU7000
firmware T-NT14UAKUC-1081.0,BT-S
soundbar
HW-H430
firmware 1002
pc
motherboard Asus A78M-A - spdif type set to HDMI
processor AMD Kaveri A8-7600
HDMI from the motherboard connected to the TV. No graphic card, no sound card.
os: Ubuntu 14.04
What I tried:
Sounds works well when sound is coming out of the tv speakers.
Sounds works well when sound bar is connected via analog wires to the tv.
Sounds works well when sound bar is connected via optical audio wires to the tv.
Sounds works well with Windows 8.1 installed on the same machine (It was my previous os).
Sound works well when streaming a movie from my NAS to the tv with the smart tv features.
No effect: changing the default sampling rate from 44.1 KHtz to 48 KHtz on the connected device.
No effect: Trying all the hdmi ports on the tv.
When audio is out of sync, turning restarting the soundbar reset the off sync and audio is correctly sync. The same problem will occur, the off sync will grow.
Bottom line
In a nut shell, it seems the problem only occurs when using soundshare AND the source of the sound is the htpc, connected via hdmi.
Is the problem hdmi related?
Is the problem related to the sound configs on ubuntu?
Is the problem related to the soundshare connection?
I'm not audio pro, specially on ubuntu. The os is a fresh install. It uses PulseAudio + Alsa. I'm still discovering what these 2 process are doing.
Do you know what the problem is? Do you have a fix? If not, I would like to have an idea if the problem is samsung'ssoundshare or ubuntu audio encoding sent to the hdmi port. One does not exclude the other...
I can provide links to my alsa configuration and the models of tv/soundbar but the system prevents me from posting links since this is my first post.
At the point where I am now, every advice/direction/suggestion is welcome.
Thank you,
Jean-Francois
I got referred to this forum by a friend who works in the audio/video industry. I hope you guys will be able to pin point my problem.
The Problem
When connecting a pc via HDMI to the tv and the tv is connected via soundhsare to the sound bar, the audio grows slowly to be out of sync. The sound is late, not in advanced.
By slowly, I mean it is good at the beginning and the off sync delay just grows over time. At one point, the sound is late of about 1 second. It takes about 5 minutes for it to be completely off sync that much.
When the audio is off sync and I press pause, the audio continues to play for about 1 second. The opposite is true, pressing play again means a silent image for about 1 second.
Once off sync, the only I found to 'fix' the problem is to turn off the sound bard, on again. It works temporarily, but the problem comes back.
This problem occurs with firefox flash movies (youtube, facebook, ...) and inside Kodi video player.
My Setup
TV model
UN50HU7000
firmware T-NT14UAKUC-1081.0,BT-S
soundbar
HW-H430
firmware 1002
pc
motherboard Asus A78M-A - spdif type set to HDMI
processor AMD Kaveri A8-7600
HDMI from the motherboard connected to the TV. No graphic card, no sound card.
os: Ubuntu 14.04
What I tried:
Sounds works well when sound is coming out of the tv speakers.
Sounds works well when sound bar is connected via analog wires to the tv.
Sounds works well when sound bar is connected via optical audio wires to the tv.
Sounds works well with Windows 8.1 installed on the same machine (It was my previous os).
Sound works well when streaming a movie from my NAS to the tv with the smart tv features.
No effect: changing the default sampling rate from 44.1 KHtz to 48 KHtz on the connected device.
No effect: Trying all the hdmi ports on the tv.
When audio is out of sync, turning restarting the soundbar reset the off sync and audio is correctly sync. The same problem will occur, the off sync will grow.
Bottom line
In a nut shell, it seems the problem only occurs when using soundshare AND the source of the sound is the htpc, connected via hdmi.
Is the problem hdmi related?
Is the problem related to the sound configs on ubuntu?
Is the problem related to the soundshare connection?
I'm not audio pro, specially on ubuntu. The os is a fresh install. It uses PulseAudio + Alsa. I'm still discovering what these 2 process are doing.
Do you know what the problem is? Do you have a fix? If not, I would like to have an idea if the problem is samsung'ssoundshare or ubuntu audio encoding sent to the hdmi port. One does not exclude the other...
I can provide links to my alsa configuration and the models of tv/soundbar but the system prevents me from posting links since this is my first post.
At the point where I am now, every advice/direction/suggestion is welcome.
Thank you,
Jean-Francois