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OpenPLI 8.2 Digital Audio Problem?

8.2 Digital Audio

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#1 Ripshod

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Posted 24 May 2022 - 12:09

Zgemma Star 2S. I've tried the new 8.2 version and I have problems with digital audio. The higher frequencies seem to have been lifted slightly causing scratchiness to audio, particularly when someone uses the letter 'T', less so with the letter 'S'. I can't bear listening to it so I've gone back to 8.1. My audio runs HDMI to TV and optical from there to an external DAC and headphones. I get the same audio scratchiness with the headphones directly to the TV.

Let me know what more info you may need, and how I can help diagnose this.


Edited by Ripshod, 24 May 2022 - 12:11.


Re: OpenPLI 8.2 Digital Audio Problem? #2 WanWizard

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Posted 24 May 2022 - 13:22

When playing what media?


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

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Re: OpenPLI 8.2 Digital Audio Problem? #3 Trial

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Posted 24 May 2022 - 13:38

Have you downmix enabled? If not the problem must be elsewhere.



Re: OpenPLI 8.2 Digital Audio Problem? #4 Ripshod

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Posted 24 May 2022 - 14:34

Yet with 8.1 there is no problem. Even a vanilla installation of 8.2 is giving problems. The only thing I haven't tried yet is the analogue outputs on the Zgemma, looks like that is my next option.

Re: OpenPLI 8.2 Digital Audio Problem? #5 Ripshod

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Posted 24 May 2022 - 15:07

Vanilla install of 8.2. These audio distortions are also on the analogue outputs of the box with 8.2, no issue with 8.1. Really surprised no-one else has heard this(?). HD or SD, several transponders tested.

 

I have 2 more posts left until tomorrow lunchtime.



Re: OpenPLI 8.2 Digital Audio Problem? #6 WanWizard

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Posted 24 May 2022 - 15:07

I wouldn't have a clue what could cause it. The Zgemma Star has been EOL for ages, so no driver update.

 

Processing audio is done completely in hardware, unless you have some exotic media that is played through ffmpeg (exteplayer3 for example).


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

Due to my bad health, I will have periods of inactivity, during which I won't respond to posts or PM.

Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #7 Ripshod

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Posted 24 May 2022 - 15:18

I think I'll stick with 8.1. I was too late to edit my last but I'm also getting this distortion when streaming to my laptop over OpenWebif which says to me it's an issue, probably just drivers as you mention @WanWizard as it's only with satellite channels , but EoL so won't be fixed (I'll get over it, nowt wrong with 8.1).


Edited by Ripshod, 24 May 2022 - 15:20.


Re: OpenPLI 8.2 Digital Audio Problem? #8 WanWizard

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Posted 24 May 2022 - 15:30

Drivers in 8.1 are the same as in 8.2, and streaming is a digital copy of very bit that is received, as-is, the box doesn't touch the bitstream.


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

Due to my bad health, I will have periods of inactivity, during which I won't respond to posts or PM.

Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #9 Dimitrij

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Posted 24 May 2022 - 16:08

Ripshod

Set "Setup mode" expert and check Audio/Video setup again.

8.2 add more new audio settings.


Duo 4K/Lunix3-4K/Solo 4K


Re: OpenPLI 8.2 Digital Audio Problem? #10 Ripshod

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Posted 24 May 2022 - 16:14

That's my bad, tested streaming with 8.2 D'oh!
Final tests. Second star 2s with 8.2 - distortion.
Star 2s in bedroom (8.2) set to use remote receiver as fallback receiver (8.1), and the same distortion.
As you say there is no driver difference then this has to be firmware.

My last post for today according to the rules. See y'all tomorrow afternoon ;)

Re: OpenPLI 8.2 Digital Audio Problem? #11 Ripshod

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Posted 31 May 2022 - 14:20

Sussed it. In 8.2 the ability to disable '3D surround speaker position' has been removed. I noticed this was disabled on an 8.1 box and when I selected any of the 3 other settings (centre, wide, extra wide) I get this distortion. Turning it off gives a clean stereo output.
Why I can't turn it off in 8.2 I don't understand. Can I have that option back?
Anyone else getting this?

Re: OpenPLI 8.2 Digital Audio Problem? #12 WanWizard

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Posted 31 May 2022 - 16:12

Looks like someone made a typo:

SystemInfo["Has3DSurroundSpeaker"] = fileExists("/proc/stb/audio/3dsurround_choices") and fileCheck("/proc/stb/audio/3dsurround")

Can you check on your box if "/proc/stb/audio/3dsurround" exists, or if it should be "/proc/stb/audio/3d_surround"?


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

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Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #13 Dimitrij

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Posted 31 May 2022 - 16:35

Ripshod

First

please answer in telnet:
 

cat /proc/stb/audio/3dsurround_choices
cat /proc/stb/audio/3dsurround

Two

add /usr/lib/enigma2/python/Components/AVSwitch.py

 

 

 


Duo 4K/Lunix3-4K/Solo 4K


Re: OpenPLI 8.2 Digital Audio Problem? #14 WanWizard

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Posted 31 May 2022 - 16:58

Either the first or the second is wrong:

SystemInfo["Has3DSurround"] = fileExists("/proc/stb/audio/3d_surround_choices") and fileCheck("/proc/stb/audio/3d_surround")
SystemInfo["Has3DSurroundSpeaker"] = fileExists("/proc/stb/audio/3dsurround_choices") and fileCheck("/proc/stb/audio/3dsurround")

the first  uses an underscore, the second doesn't.

 

On my VU+ Duo 4K it is

root@vuduo4k:~# ls -l /proc/stb/audio/
-rw-r--r--    1 root     root             0 May 31 16:57 3d_surround
-r--r--r--    1 root     root             0 May 31 16:57 3d_surround_choices
-rw-r--r--    1 root     root             0 May 31 16:57 3d_surround_speaker_position
-r--r--r--    1 root     root             0 May 31 16:57 3d_surround_speaker_position_choices

suggesting a typo for Has3DSurroundSpeaker.
 

 


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

Due to my bad health, I will have periods of inactivity, during which I won't respond to posts or PM.

Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #15 mrvica

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Posted 31 May 2022 - 17:14

doesn´t make life easier, on H7

root@h7:/tmp# dir /proc/stb/audio/
dr-xr-xr-x    2 root     root             0 May 31 18:09 .
dr-xr-xr-x   17 root     root             0 May 31 18:09 ..
-r--r--r--    1 root     root             0 May 31 18:09 3dsurround
-r--r--r--    1 root     root             0 May 31 18:09 3dsurround_choices
-r--r--r--    1 root     root             0 May 31 18:09 3dsurround_softlimiter
-r--r--r--    1 root     root             0 May 31 18:09 3dsurround_softlimiter_choices
-r--r--r--    1 root     root             0 May 31 18:09 ac3
-r--r--r--    1 root     root             0 May 31 18:09 ac3_choices
-r--r--r--    1 root     root             0 May 31 18:09 audio_delay_bitstream
-r--r--r--    1 root     root             0 May 31 18:09 audio_delay_pcm
-r--r--r--    1 root     root             0 May 31 18:09 autovolumelevel
-r--r--r--    1 root     root             0 May 31 18:09 autovolumelevel_choices
-r--r--r--    1 root     root             0 May 31 18:09 dts
-r--r--r--    1 root     root             0 May 31 18:09 dts_choices
-r--r--r--    1 root     root             0 May 31 18:09 j1_mute

root@h7:/tmp# cat /proc/stb/audio/3dsurround_choices
disabled center wide extrawide

root@h7:/tmp# cat /proc/stb/audio/3dsurround
disabled



Re: OpenPLI 8.2 Digital Audio Problem? #16 WanWizard

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Posted 31 May 2022 - 17:33

Oh, that's great, different proc node names... :(


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

Due to my bad health, I will have periods of inactivity, during which I won't respond to posts or PM.

Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #17 Dimitrij

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Posted 31 May 2022 - 18:36

[AVSwitch] '3D surround speaker position' re-add disabled value


Duo 4K/Lunix3-4K/Solo 4K


Re: OpenPLI 8.2 Digital Audio Problem? #18 Ripshod

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Posted 31 May 2022 - 20:43

cat /proc/stb/audio/3dsurround_choices returns:
disabled center wide extrawide
(as expected)
 
cat /proc/stb/audio/3dsurround returns:
center

(current setting)

 

Adding AVSwitch.py made no difference, though I did notice the existing file had the .pyo extension.

 

*edit*

 

It worked! Restarting Enigma2 reloaded everything and surround is now disabled :D


Edited by Ripshod, 31 May 2022 - 20:48.


Re: OpenPLI 8.2 Digital Audio Problem? #19 WanWizard

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Posted 31 May 2022 - 22:10

 

Merged. I'll backport the fix to 8.2-release.


Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), SAB AlphaTriple HD (S2+T2), (Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)

Due to my bad health, I will have periods of inactivity, during which I won't respond to posts or PM.

Many answers to your question can be found in our new and improved wiki.


Re: OpenPLI 8.2 Digital Audio Problem? #20 Ripshod

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Posted 31 May 2022 - 22:20

 

 

Merged. I'll backport the fix to 8.2-release.

 

Thank you so much for this quick fix. We got there in the end.





Also tagged with one or more of these keywords: 8.2, Digital Audio

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