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+--- Thread: External Input Question (/showthread.php?tid=4768)
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External Input Question - jdubs - 03-11-2022
Hi All
Can moode take the audio from a connected USB device (audio interface) and process it through CamillaDSP for output through a Digipi+AES hat?
Only 2 channels in (through the audio interface) and out (through the Digipi+AES) at 24bit / 192khz.
Thanks!
Jim
RE: External Input Question - Tim Curtis - 03-11-2022
AFAIK the USB ports can only operate as outputs for audio.
RE: External Input Question - georgew21 - 03-14-2022
(03-11-2022, 08:05 PM)Tim Curtis Wrote: AFAIK the USB ports can only operate as outputs for audio.
I wonder how we could use an external input of a usb audio interface with moode and camilla dsp (as it is already possible with ubuntu server).
In this guide, a user can achieve this on rpi with this way: https://www.audiosciencereview.com/forum/index.php?threads/budget-standalone-toslink-dsp-toslink-with-camilladsp-set-up-instructions-for-newbies.30830/
On moode 8 using expert mode in camilla dsp and choosing a such input doesn't work as a user states: https://www.audiosciencereview.com/forum/index.php?threads/rpi4-camilladsp-tutorial.29656/post-1119468
I wonder what is the problem to solve to have the option use external input of a sound card (like motu m4) with moode?
*btw congratulations for your good work with moode and for the new upgrade.
RE: External Input Question - DRONE7 - 03-15-2022
A while back I used a 24/96 low cost ADC as an input via I2S on a Pi running Raspbian lite for recording from my phono preamp..
It ran fine, though another project took my attention and I've not revisited it.
https://www.diyaudio.com/community/threads/lusya-audiophonics-adc-for-pi.371951/
It may be something to play with if you're willing to experiment and try it using MoOde...
Tim might have a hint or two for selecting it to play through MoOde ?
RE: External Input Question - georgew21 - 03-15-2022
I try to troubleshoot why motu m4 line input can't be used to moode 8.
Executing cat /proc/asound/card2/stream0 I get this as far as capture:
Capture:
Status: Stop
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
If one execute the same in ubuntu server, get this:
Capture:
Status: Running
Interface = 2
Altset = 1
Packet Size = 288
Momentary freq = 96000 Hz (0xc.0000)
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
I wonder why for moode 8 the status of capture is "Stop" and for ubuntu server is "running" because I think that if we enable this then we could use the line input of motu with camilladsp on moode, too.
RE: External Input Question - jdubs - 03-16-2022
Interesting! I wonder if would work if the status of the inputs could be changed to "Running".
-Jim
RE: External Input Question - Tim Curtis - 03-16-2022
(03-15-2022, 03:08 PM)georgew21 Wrote: I try to troubleshoot why motu m4 line input can't be used to moode 8.
Executing cat /proc/asound/card2/stream0 I get this as far as capture:
Capture:
Status: Stop
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
If one execute the same in ubuntu server, get this:
Capture:
Status: Running
Interface = 2
Altset = 1
Packet Size = 288
Momentary freq = 96000 Hz (0xc.0000)
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
I wonder why for moode 8 the status of capture is "Stop" and for ubuntu server is "running" because I think that if we enable this then we could use the line input of motu with camilladsp on moode, too.
What is the output from the command below?
Code:
arecord -LRE: External Input Question - georgew21 - 03-16-2022
(03-16-2022, 08:41 PM)Tim Curtis Wrote:this is the result(03-15-2022, 03:08 PM)georgew21 Wrote: I try to troubleshoot why motu m4 line input can't be used to moode 8.
Executing cat /proc/asound/card2/stream0 I get this as far as capture:
Capture:
Status: Stop
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
If one execute the same in ubuntu server, get this:
Capture:
Status: Running
Interface = 2
Altset = 1
Packet Size = 288
Momentary freq = 96000 Hz (0xc.0000)
Interface 2
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 0x81 (1 IN) (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Bits: 24
Channel map: FL FR FC LFE
I wonder why for moode 8 the status of capture is "Stop" and for ubuntu server is "running" because I think that if we enable this then we could use the line input of motu with camilladsp on moode, too.
What is the output from the command below?
Code:arecord -L
https://ibb.co/K9yzWHV
RE: External Input Question - jdubs - 03-18-2022
I tried this too and got the same result.
-Jim
RE: External Input Question - Tim Curtis - 03-18-2022
Hopefully someone with more expertise that I have in capture devices will know what the output means.
Btw, @jdubs can you post the output as text? That image is not the most convenient for study. Thx.