RPi4 + CamillaDSP Tutorial

[dobrynin]

You can try hw devices - hw:CARD=Headphones, DEV=0 for playback and hw:CARD=Loopback,DEV=0 or 1 for capture, depending what device you use on the other side https://henquist.github.io/0.6.2/backend_alsa.html#alsa-loopback

Yes, it worked. Now there are no interruptions in the sound. Thank you very much!

Now the problem is that the output signal is very, very quiet. I set the volume on the amplifier to 100% and it still plays very quietly. Is there any way to fix this?

 

[terryforsythe]

Now the problem is that the output signal is very, very quiet. I set the volume on the amplifier to 100% and it still plays very quietly. Is there any way to fix this?

Check your gain under the Mixers tab. I have mine set to 0, and no issues.

 

[dobrynin]

Check your gain under the Mixers tab. I have mine set to 0, and no issues.

That's how it is now. And it's so very quiet.

 

[terryforsythe]

That's how it is now. And it's so very quiet.

In the terminal, enter "alsamixer" and check your gain settings there. I have my gain set to 93 in ALSA.

EDIT: Here is a screenshot:

 

[dobrynin]

In the terminal, enter "alsamixer" and check your gain settings there. I have my gain set to 93 in ALSA.

I looked at it like this:

 

[terryforsythe]

I looked at it like this:

Use the tab keyboard button to show your capture and playback.

EDIT: You should see four settings, like in my image. L and R capture, and L and R for your output device.

 

[dobrynin]

I turned up the volume here and it got louder, but it's still not enough to get to normal volume. As for you, I do not display it on channels ((

I apologize very much for clogging up the topic with my pictures. I'll get better.

 

[terryforsythe]

As for you, I do not display it on channels

Did you hit the "Tab" key on your keyboard while alsomixer is open to cycle through the different screens?

 

[dobrynin]

Did you hit the "Tab" key on your keyboard while alsomixer is open to cycle through the different screens?

Yes, but I don't have separate left and right channels ((
I've tried pressing Tab for different maps. I selected the cards by pressing F6.

 

[terryforsythe]

Yes, but I don't have separate left and right channels ((
I've tried pressing Tab for different maps. I selected the cards by pressing F6.

If CamillaDSP and ALSA are set properly, and your equipment is working properly, then I'm stumped as to what the issue could be.

 

[dobrynin]

If CamillaDSP and ALSA are set properly, and your equipment is working properly, then I'm stumped as to what the issue could be.

I installed and configured it according to the instructions from the first message in this topic.
One thing, I don't have an input and output interface yet. For input, I use Airplay as a source, and for output, I use the standard 3.5 Jack connector on RPi 3.

 

[phofman]

Does your RPi airplay receiver or your airplay source have volume control?

Maybe your RPi3 analog output is too weak for your amp. Easy to check e.g. with speaker-test -t sine - for details https://linux.die.net/man/1/speaker-test

 

[dobrynin]

volume control?

Yes. I'm adjusting the volume from my phone. And even when it is at its maximum, it is still very quiet at the output of the headphone port.

I will wait for my DAC with Ali on the 5122 chip and then I will try with him.

Although I still have a Focusrite 2i4 gen2 card, I'll probably try it for a test.


Thank you all so much for your help!

 

[Ramon Cota]

TLDR,
Does this software have any GUI ? Can it be installed on a PC and control external usb sound card? Does it have 1st and 3rd order filters ?

 

[Daverz]

TLDR,
Does this software have any GUI ? Can it be installed on a PC and control external usb sound card? Does it have 1st and 3rd order filters ?

Yes.

 

[Ramon Cota]

No way i will check it out then as peace eq/apo i use has even order slopes only so somewhat limited use, was under impression it was command line only software.

 

[sarieri]

I feel like a shame not knowing this. But is there a way to implement input EQ with camilladsp?

 

[Daverz]

I feel like a shame not knowing this. But is there a way to implement input EQ with camilladsp?

What do you mean by "input EQ"?

 

[sarieri]

What do you mean by "input EQ"?

I used cdsp as my digital crossover. Now I just want to load a input EQ to get a flat FR.

 

[Daverz]

I used cdsp as my digital crossover. Now I just want to load a input EQ to get a flat FR.

Assuming a stereo input signal, you can apply your EQ filters to left and rght inputs, or you can apply EQ after splitting up the input with a mixer. If you are using FIR filters for your crossover and for EQ, I would suggest convolving the full EQ with the crossover filters to create a single FIR filter for each output channel.