November 10, 20232 yr 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...
November 10, 20232 yr Solution 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.
November 13, 20232 yr Author 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
September 22, 20242 yr 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
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