Combine Pi2Scart with USB-soundcard?

madmodder123

@yuke Have you tried putting these in your /boot/config.txt?
######## Uncomment to help remove white noise (if needed)
#disable_audio_dither=1
######## Uncomment to completely remove white noise over 3.5mm connection
#audio_pwm_mode=2

They seemed to make a pretty big difference in audio quality for me.

Yuke

Yes i did and it changed the quality of my sound dramatically (into better). But it seems that my AV-Jack is giving up on me now (It literally has gone rusty and i just have the Pi for two years now...). Its not enjoyable to play the games anymore with all the noise/static/crackling. Hopefully the USB-Soundcard solution will fix the problem, i really wanna finish Valkyrie Profile. :D

Hopfully the sound quality is similar to USB-Headsets...that would be enough for me as i mainly use those.

Yuke

Ok i cant get it to run it seems. A fucking plug and play solution is too much to ask in the year 2018 it seems.

Blockquote1
/$ lsusb
Bus 001 Device 005: ID 0951:16a4 Kingston Technology
Bus 001 Device 004: ID 054c:09cc Sony Corp.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Blockqote2
/$ cat /proc/asound/modules
0 snd_bcm2835
1 snd_usb_audio
2 snd_usb_audio

Blockquote3
/$ amixer
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback -10239 - 400
Mono: Playback 400 [100%] [4.00dB] [on]

Can anyone tell me the console commands to set this up? I tried the guides from here but it didnt work (In the guide there was only one listed usb_audio device).

mitu

@yuke Language please. In the link on github, there's an extra step to make the usb sound module the default one - see the step 5. You can see a list of soundcards that system detects executing

aplay -l

You should have 3 I think, 2 are the default ones on the PI system (Jack and HDMI), the 3rd one should be the USB soundcard.

Yuke

Sorry @mitu, i was really frustrated. Lost half of my day trying to get this working.

This is what i got with the command you gave me:

Code:
card 2: Audio [HyperX 7.1 Audio], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

What configfile do i have to edit now?

mitu

@yuke Look in the Alternate USB Audio Method, step 5

We can change and force the system to load the sound cards in a different order by creating a sound configuration file. Create the file by using the command below:

    sudo nano /etc/modprobe.d/alsa-base.conf

You will then enter the Nano editor environment and type the following lines:

   options snd_usb_audio index=0
   options snd_bcm2835 index=1
   options snd slots=snd-usb-audio,snd-bcm2835

Afterwards, press Ctrl+X to exit and answer Yes when prompted to save.

Yuke

@Mitu I tried that the whole day but because i have two usb devices shown it looked like that afterwards and it didnt work...

Blockqote2>
/$ cat /proc/asound/modules
0 snd_usb_audio
1 snd_bcm2835
2 snd_usb_audio

I dont know how to change this so that number two changes to 0 (i guess this was my problem but thats just a guess...)

Yeah, it seems thats the problem...the usb_device shown as 1 is actually my ps4 controller...

Yuke

Yes, i was right. Without my PS4 controller its working...Does anyone have an idea how i can differentiate between my two usb-devices?

Blockqote2
/$ cat /proc/asound/modules
0 snd_bcm2835
1 snd_usb_audio
2 snd_usb_audio

1 is my PS4 controller
2 is my USB soundcard

mitu

@yuke Look in the https://alsa.opensrc.org/MultipleCards#Multiple_devices page, there's a section about Ordering multiple cards of the same type , talking about ordering the cards detected by the USB ids. Edit the file referenced in the step 5 I mentions and make sure the USB card comes first, then try again.
EDIT: There's a section specially about USB soundcards on https://alsa.opensrc.org/MultipleUSBAudioDevices, with some example configs.

Yuke

thank you