trying to get quality audio from ORANGE PI 3 LTS line out

[quackmore]

the jack audio on my Orange Pi 3 LTS is very noisy... my setup description below

 

anyone having the same issue and fixed it? 

 

or anyone that went with a USB audio adapter or a HDMI adapter?

 

thanks for sharing

 

 

___________________
this is my setup
ORANGE PI 3 LTS headless

Linux 6.1.53-current-sunxi64 #1 SMP Wed Sep 13 07:43:05 UTC 2023 aarch64 aarch64 aarch64 GNU/Linux
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.3 LTS
Release:        22.04
Codename:       jammy

 

I'm using alsa and everything plays fine when using bluetooth

**** List of PLAYBACK Hardware Devices ****
card 0: ac200audio [ac200-audio], device 0: 508f000.i2s-ac200-dai ac200-dai-0 [508f000.i2s-ac200-dai ac200-dai-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: sun9ihdmi [sun9i-hdmi], device 0: SUN9I-HDMI PCM i2s-hifi-0 [SUN9I-HDMI PCM i2s-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

Using alsamixer I muted all the inputs and the input boost for card 0

 

further details from mplayer output...

mplayer -ao alsa someSong.mp3
MPlayer 1.4 (Debian), built with gcc-11 (C) 2000-2019 MPlayer Team
Playing someSong.mp3.
libavformat version 58.76.100 (external)
Audio only file format detected.
Clip info:
 ...
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
AO: [alsa] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...

 

[NicoD]

I know this is the same on other Rockchip devices. Not sure what the cause is. Might be interference.
I use usb audio adapter or hdmi-audio on all my boards. Never the on-board audio jack because it was a problem long ago with other boards. Even RPi used to have terrible sound on audio jack if I remember well.

[quackmore]

Thanks, I think I'm gonna use an external adapter too

[Igor]

Check if this helps here too 

 

[quackmore]

thank you

 

I ordered a HMDI to VGA adapter that has an audio jack output too

 

but I'll keep your suggestion as a backup solution

 

[kris777]

I confirm the sound on the OrangePi 3LTS / internal card and the 3.5 jack output is very bad with noise.
I can confirm the correct operation of the USB sound card based on the chip: Pcm2706 (can be read: 16-Bit Delta-Sigma Stereo DAC)

link1 link2