Hello,
(see https://store.sure-electronics.com/product/AA-KA32473 )
FYI: working with standard USB audio mode,
But since it claims to be a "8 x 50W 6.1, 4.2, 4.0 Configurable USB Codec
Input Audio Amplifier Board" the modes are not respected, which can be
configured via switches on the Amplifier board.
ALSA Channels names (speaker-test):
Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer
- Side Left - Side Right
Input to KAB9 has differential Input feed by USB-AUDIO Interface with channel
numbers:
IN1L+,IN1L-,IN1R+, ...,IN8R-
Signal are clean as differential signals (measured on speaker)
ALSA channel order stereo mode:
IN1 = 3, IN2=4, IN3=7, IN4=8, IN5=5, IN6=6, IN7=1, IN8=2
ALSA channel numbers mono mode:
channel 1 = IN2 = 4, channel 2 = IN4 = 8, channel 3 = IN6=6, channel 4 =
IN8=2
Questions:
- How to correct channel order ?
- How to switch between Mono und Stereo Mode on driver side maybe a module
argument ?
Additionally on alsamixer there are all input parameter of the CM6206, but
Card has only outputs...
Anyway thanks ALSA and USB Audio standard I can used it, but any hints how to
make it more intuitively usable is appreciated.
mfG
Winfried
Addendum: here the Info for the test:
| Computer | Linux Debian system |
|-|-|
|Notebook | Debian 11 linux-5.10.0-20-rt-amd64 |
| embedded | |
| USB-AUDIO | CM6206 chip - wondom module |
| amplifier | wondom KAB9 https://store.sure-electronics.com/product/AA-KA32473
|
Boot-Messages
[399312.935630] usb 6-2: new full-speed USB device number 11 using
xhci_hcd
[399313.100653] usb 6-2: New USB device found, idVendor=0d8c,
idProduct=0102, bcdDevice= 0.10
[399313.100661] usb 6-2: New USB device strings: Mfr=0, Product=2,
SerialNumber=0
[399313.100665] usb 6-2: Product: USB Sound Device
[399313.186887] usb 6-2: current rate 30464 is different from the runtime
rate 96000
[399313.232711] usb 6-2: Warning! Unlikely big volume range (=8065), cval-
>res is probably wrong.
[399313.232717] usb 6-2: [9] FU [Mic Playback Volume] ch = 2, val =
-6144/1921/1
[399313.256834] usb 6-2: Warning! Unlikely big volume range (=8065), cval-
>res is probably wrong.
[399313.256841] usb 6-2: [11] FU [Line Playback Volume] ch = 2, val =
-6144/1921/1
[399313.318887] usb 6-2: Warning! Unlikely big volume range (=6928), cval-
>res is probably wrong.
[399313.318893] usb 6-2: [8] FU [Mic Capture Volume] ch = 2, val =
-4096/2832/1
[399313.342695] usb 6-2: Warning! Unlikely big volume range (=6928), cval-
>res is probably wrong.
[399313.342701] usb 6-2: [15] FU [Line Capture Volume] ch = 2, val =
-4096/2832/1
[399313.366704] usb 6-2: Warning! Unlikely big volume range (=6928), cval-
>res is probably wrong.
[399313.366710] usb 6-2: [2] FU [PCM Capture Volume] ch = 2, val =
-4096/2832/1
[399313.372016] input: USB Sound Device as /devices/
pci0000:00/0000:00:08.1/0000:06:00.4/usb6/6-2/6-2:1.3/0003:0D8C:0102.0022/
input/input82
[399313.431830] hid-generic 0003:0D8C:0102.0022: input,hidraw0: USB HID
v1.00 Device [USB Sound Device ] on usb-0000:06:00.4-2/input3
alsa device:
Karte 3: ICUSBAUDIO7D [ICUSBAUDIO7D], Gerät 0: USB Audio [USB Audio]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
alsa interfaces:
hw:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
Direct hardware device without any conversions
plughw:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
Hardware device with all software conversions
sysdefault:CARD=ICUSBAUDIO7D
ICUSBAUDIO7D, USB Audio
Default Audio Device
front:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
Front output / input
surround21:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=ICUSBAUDIO7D,DEV=0
ICUSBAUDIO7D, USB Audio
Direct sample mixing device
usbstream:CARD=ICUSBAUDIO7D
ICUSBAUDIO7D
USB Stream Output
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