Hello Matt!

Thanks for your answers!

The different out- and inputs appear in my Juce Application, but when I check aplay -l and arecord -l they get listed as well.


They are called:

- audioinjector-isolated-soundcar; AI-HIFI cs4271-hifi-0; Direct sample mixing device

- audioinjector-isolated-soundcar; AI-HIFI cs4271-hifi-0; Direct hardware device with our any conversions

- audioinjector-isolated-soundcar; USB Stream Output



Unfortunately the Default ALSA Input and Output is choosing the direct sample mixing device which is completely destroying the sound.
Is there something I configured wrong or how can I force the default alsa device to be the direct hardware device?

Thanks for your work, the device is amazing!



On 17. Apr 2021, at 08:30, Matt <matt@flatmax.com> wrote:

Hi,

On Thu, 2021-04-15 at 23:20 +0200, Stephan Eckes via People wrote:
Hello People!

Currently I am using the Isolated Soundcard + Breakout Board for a
project.
I have some questions and it would be super cool if somebody knows
answers ;)

1. Is it normal that the card makes this loud click sound when
starting to play or pause?

That click is coming from the relay. The relat engages and disengages
when the soundcard mutes itself.


2. Why are there two different audio outputs, one is called direct
out the other one is called something with sample. For me only the
direct out is working properly. The other one is crackling during
playback.


Where do you see the two outputs ?

3. When I want to connect an encoder to the GPIOs which one are still
free to do so? Maybe the ones marked with white rings on the PCB?

The white rings indicate which pins are reserved. So you can connect to
the other pins.


4. Is it true that the card offers 48V phantom power and how is it
possible to activate or deactivate?

The phantom power line is there. The phantom power will work with
preamplifier boards which are desigend to interface it.



Thanks in advance, even if you answer just one question :)

Cheers,
Stephan