[AudioI] Isolated Card + XLR Breakout Board Questions

[Stephan Eckes]

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 at 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
>> 
> 
> 

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