Trouble playing ACC-LC sound

Help & Support Operating System
1

Hi

I’m having trouble getting sound on a specific show. While TrueHD and other Dolby formats works fine. I tried switching the audio device in settings with no luck.

ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 23 min 14 s
Source duration                          : 23 min 14 s
Bit rate mode                            : Constant
Bit rate                                 : 197 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 96.0 kHz
Frame rate                               : 93.750 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 32.7 MiB (5%)
Source stream size                       : 32.7 MiB (5%)
Language                                 : Swedish
Default                                  : Yes
Alternate group                          : 1

Using an Ugoos AMB6+ with latest updates. Using Sonos ARC soundbar with Sub. It was working fine on my shield. Also LG C2 TV.

Settings:

    <setting id="audiooutput.audiodevice">ALSA:surround71:CARD=AMLAUGESOUND,DEV=0|AML-AUGESOUND</setting>
    <setting id="audiooutput.channels">10</setting>
    <setting id="audiooutput.config" default="true">3</setting>
    <setting id="audiooutput.volumesteps" default="true">20</setting>
    <setting id="audiooutput.maintainoriginalvolume" default="true">true</setting>
    <setting id="audiooutput.stereoupmix" default="true">false</setting>
    <setting id="audiooutput.mixlfe" default="true">0</setting>
    <setting id="audiooutput.boostcenter" default="true">0</setting>
    <setting id="audiooutput.processquality" default="true">30</setting>
    <setting id="audiooutput.atempothreshold" default="true">2</setting>
    <setting id="audiooutput.samplerate" default="true">48000</setting>
    <setting id="audiooutput.streamsilence" default="true">1</setting>
    <setting id="audiooutput.streamnoise" default="true">false</setting>
    <setting id="audiooutput.guisoundmode">0</setting>
    <setting id="audiooutput.guisoundvolume" default="true">100</setting>
    <setting id="lookandfeel.soundskin" default="true">resource.uisounds.kodi</setting>
    <setting id="audiooutput.passthrough">true</setting>
    <setting id="audiooutput.passthroughdevice">ALSA:hdmi:CARD=AMLAUGESOUND,DEV=0|AML-AUGESOUND</setting>
    <setting id="audiooutput.ac3passthrough" default="true">true</setting>
    <setting id="audiooutput.ac3transcode" default="true">false</setting>
    <setting id="audiooutput.eac3passthrough">true</setting>
    <setting id="audiooutput.dtspassthrough">true</setting>
    <setting id="audiooutput.truehdpassthrough">true</setting>
    <setting id="audiooutput.dtshdpassthrough" default="true">false</setting>
    <setting id="audiooutput.dtshdcorefallback" default="true">true</setting>

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2

https://wiki.coreelec.org/coreelec:ce_support

And short sample.

3

Well here is a short sample. If I disable Earc the sound plays just fine on my TV alone. But when earc is active, the sound is not passed to my soundbar at all from what I can tell. But it was working while using my Shield Pro 2019.

Log: https://paste.coreelec.org/AugustaArrive

4

Found this in the log above: Pulseaudio module module-allow-passthrough not loaded - opening PT devices might fail

Any ideas?

5

Try y loading the module in ssh

pactl load-module module-allow-passthrough
6

I am not sure if AAC passthough is working at all or if Multi-PCM needs to be used. Use more forum search! Maybe your old device just use MultiPCM and not passthrough so it works. Same is like for Android.

And you did not share a short sample yet.

Or another hit on searching:

7

Yeah, that was my 5 year old post…
Didnt remind which CE was used…
And not use that box now .
But thanks.

8

After using that command, the sound for the specific show that was having issues worked. Showing as Stereo PCM…

BUT… Now everything is stereo PCM, including my TrueHD movies.

The only devices Im using currently is my LG C2 TV and the Ugoos AMB6+. And for the record, I am using HDMI Multi Ch PCM.

9

I still don’t get this.

So currently my setup is this:
LG C2 TV
Feintech VAX04101 HDMI eARC Pass Switch 4x1 for Soundbar
Sonos Arc + Sonos Sub
Ugoos AMB6+

So because I’m using VAX04101, the sound should go directly to my Sonos Arc via eARC and bypass my TV. I checked without the switch and the problem persists.

And here are the formats that Sonos supports

Sonos Arc, Arc SL, Arc Ultra, Beam (Gen 2):
Dolby Digital Plus
Dolby Atmos (Dolby Digital Plus)
Dolby Atmos (TrueHD)
Dolby TrueHD
DTS Digital Surround
Multichannel PCM
Dolby Multichannel PCM (requires eARC connection).

"Although DTS support is added, the firmware update only includes DTS Digital Surround (5.1). It does not include support for DTS HD-Master Audio."

And these are the audio settings I’m using in CoreElec:

HDMI Multi Ch PCM
7.1
Best Match
Allow Passthrough
Output device: HDMI
Everything checked except for DTS-HD capable receiver.

I tried both the Nightly and CPM builds. I’m uploading a sample that does not work for me.