On 5/14/19 12:26 PM, tu...@posteo.de wrote:
On 05/13 11:24, Jack wrote:
On 2019.05.13 23:10, tu...@posteo.de wrote:
Hi,
is it somehow possible to play USB-Audio on a PC without one of these
USB-dongle-"soundcards" (DACs)?
I searched the web and only got links to those dongles...
On the other hand: On the forum of the developers board one post
spokes of a "dummy" USB-Audio device...
How can I acchieve this?
Thanks for any help in advance!
Cheers!
Meino
It's not clear what you really want. Why would you want USB audio without
an actual USB audio device? Without a USB audio dongle/device/whatever,
what would you have to actually produce sound? I can imagine a "dummy"
USB audio device - but I can imagine it for testing the software, but not
actually producing any sound, so why would you want it?
Jack
Hi Jack,
I don't wanted to pollute my posting with non-Linux details...but here
they are:
I habe a Teensy 3.6 by PJRC (=>https://www.pjrc.com/), which has an
USB-port. This port can be switched between a lot of USB-devices...
...one of them is an USB-audio device (output).
The MK66FX1M0VMD18 uC has beside an FPU a DSP block.
With a certain (open source) firmware this chip can be used as an
synthesizer.
To cut costs I wanted no USB dongle to play the sound ... I wanted
to use my Linux PC as "Mega DAC"...so to say.
Question is:
How can I create such an "receiver" for USB Audio signals to play
them live with my PC?
Cheers!
Meino
That's very different from what I (and I suspect others) thought about
your first posting. You want to do USB audio input, not output. In
this case, I don't think a usual USB audio device/dongle would even
help. My first suggestion is to just plug the USB from the Teensy into
the PC, and see what dmesg shows, and what lsusb shows. Searching on
the manufacturer and device IDs shown by lsusb might lead to solutions,
or at least to further lines of investigation. Also, the Teeny docs
might give more information about what kind of USB output their audio
produces, and I wonder if you might find some good info on their forum?
Jack
