FusionDsp : the complete Dsp center for Volumio3!

CompleteP · November 4, 2022, 10:28pm

Thanks Wheaten.

You made a fair comment about the number of things changing which makes a direct comparison problematic.

When in doubt, seek more data.

I did a comparison between the filter curve in FusionDSP (by doing a CSV download in CamillaDSP and the plotting in Excel) and Equalizer APO (Analysis Panel) for the same set of Parametric EQ filters.

This is shown in “Filter curve (CamillaDSP vs EqualizerAPO).png”.

They are equivalent so any differences I’m perceiving are not from an obvious difference in the overall filter curves.

I know there’s a lots of variables still in play but the overall filter curves in FusionDSP and Equalizer APO does not appear to be the issue.

I don’t know what my next step is but “just sit back and enjoy the music via Volumio on the Raspberry Pi” might be the simplest approach.

Regards.

Wheaten · November 4, 2022, 11:13pm

yes, keep in mind that Volumio is fully designed to deliver the best output.
So enjoy the quality. If you still want to do some more testing you might look into programs like:
Fidelizer

I have run some test with it and there is some small improvements, if I can hear 60-90 euro differences, I didn’t.

Volumio_Volumio · November 5, 2022, 8:52am

I have installed the lastest version of FusionDps. When i load and use setting such as (bass, voice, soundtrack,… exclude “flat”), the output volume reduces very much. Could you advise me how to fix this problem.

balbuze · November 5, 2022, 9:37am

hello,
There is no problem and nothing to fix…
let me explain…
A max level in digital domain is 0dB
When you set a positive value in the EQ (ex 3dB) for a frequency, it means increase the signal here. As it is not possible to go above 0dB, to get the same relative effect, everything is set 3dB lower exept the frequency you choose. If you don’t do that, signal will be clipped! With a very bad sound. FusionDsp auto adjust this level by default according to EQ settings. You can disable this in ‘more settings’ and ‘auto preamp’ off. But signal may be clipped. All software require a attenuation (pre-amp) to work properly.
This not a FusionDsp issue, but an easy way to enjoy music without bothering with complex settings.
Enjoy

Wheaten · November 5, 2022, 11:18am

Just a graphical representation of Balbuze explaination.
Every red area can/will result in clipping, as the signal passes the 0dB boundary:

With the pre-amp lowered, this behavior will not appear:

Volumio_Volumio · November 5, 2022, 11:40am

Hi Balbuze and Wheaten,

Thanks for your explanation. According your advice, when I use these setting, all I have to do is: turn volume up in amply?

balbuze · November 5, 2022, 12:35pm

Yes …

Volumio_Volumio · November 5, 2022, 1:50pm

Hi Balbuze,

Thank you so much.

Neil_Mackie · November 5, 2022, 4:04pm

What version do you use?

Version was 1.0.28.
Updated to 1.0.30 as you suggested and error messages have stopped.
Thank for your advice.

Voluminous · November 12, 2022, 10:23pm

Any progress on the Airplay issue?

pieterv · November 14, 2022, 5:54am

1.0.30 did not fix the Airplay issue for me either.

balbuze · November 14, 2022, 6:08pm

Have you tried to raise the volume on your Apple device AND Volumio with level > 50?

pieterv · November 15, 2022, 4:49am

Yes volumio is set to 100% and airplay to around 60+.

With FusionDsp disabled it works 100%.

Wheaten · November 15, 2022, 6:22am

Can you try the following:

Reboot the device
Make sure DSP is enbaled (if you change settings, turn DSP off and on again)
Open the application on your phone
Set the volume to > 50% (phone)
The start airplay

sjj · November 30, 2022, 8:25pm

Is there a way to backup my custom EQ settings so I can then copy them to a new version of Volumio on another SD card. I don’t see my EQ settings in the Volumio shared folder Internal storage > FusionDSP.

balbuze · December 1, 2022, 7:00am

Hello.
The only to copy FusionDsp settings, is to SSH to your device, then copy

/data/configurations/audio_interface/fusiondsp/config.json

And paste in the same location on your other device.
If you are using peq, an other way would be to create a txt file from your computer with all Eq (using REW syntax or demo file in /peq folder).
This way, you can import the file in FusionDsp in a very easy way and use it on all your devices. See online help to import file.

Voluminous · December 7, 2022, 1:41pm

Just updated to 1.0.31. What is new in this version?

balbuze · December 7, 2022, 1:46pm

FusionDsp v1.0.31 stable.

internal features for better integration in futur Volumio see :DSP Elements Reporting | Volumio Developers Documentation

This version brings nothing new for ‘normal’ user.
Enjoy.

Aiello · December 8, 2022, 7:31am

is there no news on peppymeter and fusiondsp yet, so that they run together?

Flames · December 9, 2022, 5:06pm

I think there will be no run together, as long as the peppymeterproject will Input AAMP. Ballbuze is not the right contact person for that😉. He wrote this for one or two times.
I would be glad too, if both run together.