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--- mnretrogamer:os:emuelec:usb_dac [2020/09/08 12:24] – created solarsparq
+++ mnretrogamer:os:emuelec:usb_dac [2023/01/06 10:06] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ----
-====== emuELEC & USB DACs ======
+====== emuELEC & USB DAC ======
 ----
-  * reference
+We are working on connecting the ODROID N2 running EmuELEC to the USB Multibit DAC module inside of our [[https://www.schiit.com/products/ragnarok-1|Schiit Ragnarok]] or [[https://www.schiit.com/products/modi-1|Schiit Modi 2 or 3]].  This is critical for this standing/sitting configuration to work properly in {{fa>headphones}} HiFi {{fa>headphones}}.
-    * [[https://discourse.coreelec.org/t/usb-sound-card-as-default-device/1454/6|USB sound card as default device on CoreELEC [08/15/2020]]]
+The PRE-OUT on the Schiit Ragnarok is currently connected to a [[https://www.svsound.com/products/pb-1000|SVS PB-1000 Subwoofer]].  We will take a look at moving the PRE-OUT to our [[https://www.schiit.com/products/valhalla-1|Schiit Valhalla 2]] & Beyerdynamic headphones for true HiFi retro gaming with a tube amp.  We can re-connect the subwoofer through the OUTPUT ports on the rear of the Valhalla 2.  This will subject the subwoofer to the tube amp.  fun.
+The problem?  USB Audio currently only working in EmulationStation & is lost once I enter RetroArch.  On true RetroPie, this is fully configurable.  In EmuELEC, not so much unfortunately.
+I could manually specify the audio device in RetroArch using the list below, or look up [[https://github.com/libretro/Lakka-LibreELEC/wiki/Audio-settings|best practices for handling USB audio & RetroArch]].
+<code>
+EmuELEC:~ # aplay -l
+**** List of PLAYBACK Hardware Devices ****
+card 0: AMLAUGESOUND [AML-AUGESOUND], device 0: SPDIF-B-dit-hifi dit-hifi-0 []
+  Subdevices: 1/1
+  Subdevice #0: subdevice #0
+card 0: AMLAUGESOUND [AML-AUGESOUND], device 1: TDM-C-T9015-audio-hifi T9015-audio-hifi-1 []
+  Subdevices: 1/1
+  Subdevice #0: subdevice #0
+card 0: AMLAUGESOUND [AML-AUGESOUND], device 2: SPDIF-dit-hifi dit-hifi-2 []
+  Subdevices: 1/1
+  Subdevice #0: subdevice #0
+card 1: Multibit [Schiit USB Multibit], device 0: USB Audio [USB Audio]
+  Subdevices: 1/1
+  Subdevice #0: subdevice #0
+EmuELEC:~ #
+</code>
+<code>
+##############################################
+#                 EmuELEC                    #
+#     Retro emulation for Amlogic Devices    #
+#             Based on CoreELEC              #
+##############################################
+EmuELEC (official): 2.7.1 (Amlogic-ng.arm)
+EmuELEC:~ # aplay -L
+null
+    Discard all samples (playback) or generate zero samples (capture)
+sysdefault:CARD=AMLAUGESOUND
+    AML-AUGESOUND,
+    Default Audio Device
+iec958:CARD=AMLAUGESOUND,DEV=0
+    AML-AUGESOUND,
+    IEC958 (S/PDIF) Digital Audio Output
+hdmi:CARD=AMLAUGESOUND,DEV=0
+    AML-AUGESOUND,
+    HDMI Audio Output
+sysdefault:CARD=Multibit
+    Schiit USB Multibit, USB Audio
+    Default Audio Device
+front:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+    Front speakers
+surround21:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.1 Surround output to Front and Subwoofer speakers
+surround40:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.0 Surround output to Front and Rear speakers
+surround41:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.1 Surround output to Front, Rear and Subwoofer speakers
+surround50:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.0 Surround output to Front, Center and Rear speakers
+surround51:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.1 Surround output to Front, Center, Rear and Subwoofer speakers
+surround71:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+.1 Surround output to Front, Center, Side, Rear and Woofer speakers
+iec958:CARD=Multibit,DEV=0
+    Schiit USB Multibit, USB Audio
+    IEC958 (S/PDIF) Digital Audio Output
+EmuELEC:~ #
+</code>
+Using that information, we see there are two potential ways to manually specify our audio device in RetroArch.
+<code>
+audio_device = "hw:1:0"
+audio_device = "sysdefault:CARD=Multibit"
+</code>
+Will test this out.

mn.retrogamer

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