FusionDsp : the complete Dsp center for Volumio3!

How do you apply filters ? In FusionDsp or in CamillaDsp?
Have you read the help in the plugin to know how to change/save settings in CamillaDsp?
What kind of filter do you use?
Can you provide log please?

I only use CamillaDSP. I add a new filter to my any of my channels and after applying it the playback stops and CamillaDSP stays offline. I tried to load my old config but it still stays offline. I did everything as described in the fusion manual but it doesn’t work.

The log: http://logs.volumio.org/volumio/6938zCN.html

I’ll just use my SD card with moOde again. It just works flawlessly there and I get external inputs without a subscription

It seems you changed the output device in CamillaDsp.
If it is the case don’t. It must stay as set by FusionDsp
Edit: and please, give filters and values you use. Last point, why don’t you set it in FusionDsp?

CamillaDSP is just much more powerful than any other DSP out there imo.
I already have configs with parametric EQ and FIR filters to use with camillaDSP. I also prefer the GUI of CamillaDSP.
I‘ll check if a wrong output device caused this issue

Quick question about the Harman curve - if I have already used REW to create a set of WAV files for the Right and Left speaker (using they target curve options within REW) what would the Harman Curve in FusionDSP do to that target? Would this exaggerate the curve more again? If so what is the use case for using a target curve in FIR creation from WAV files?

Target curve in FusionDsp is just uses if you generate filters from an impulse using the module provided. It uses Drc-fir for that.
In your case, just put your filters generated in REW in the related folder/INTERNAL/FusionDsp/filters and use select them in FusionDsp.

Signed up to say thank you for the time and effort that goes into creating and maintaining this. Truly a treat to get it all up and running and have PEQ available for my local music library and more. Thank you!

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thanks for your comment!
Enjoy your equalized music! :wink:

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So far so good!

One thing I’m curious about thought. In FusionDSP there is a setting for resampling and you can choose the bitrate and quality, however not the bit depth. In the general playback settings you can choose depth as well (but it only effects local playback and you then can’t enable the FusionDSP resampling option, so I’ll forget that anyhow).

When I use Windows (not often), I have EqualizerAPO set up and I have Windows output set to 24/96 as it apparently helps with some headroom after the DSP.

Does Fusion always output 24-bit anyway? Also, would you agree that having it go to 96k a good idea anyway? Of course I have some files of various resolutions (44.1, 48, 88.2, 96, a few 192) would any of those suffer more than they’d gain with the resampling setting?

Thanks in advance!

Internal process is done using S32_LE format.
The final output is adapted to HW capability by ALSA via Volumio Volumio AAMPP Overview | Volumio Developers Documentation
Resampling in FusionDsp is applied whatever is the source.
Resampling does not (IMHO) improves SQ in a way I can hear…
So, hard to advice…
Without resampling, output samplerate is the same as input.
If you use convolution filter, you have to use one filter by samplerate.

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hello @juliangst
no news from you.
Did you check the wrong output you set?
If it still not working we need to find why.
But if it was the problem (what I think), it would be honest and fair to write, here and elsewhere RPi4 + CamillaDSP Tutorial | Page 36 | Audio Science Review (ASR) Forum
that it was not a bug in Volumio or FusionDsp…

Thanks BR! I’ve turned off resampling to keep everything native in that regard. I, too, do not notice any sound quality difference through comparisons in the past.

I’ve also found it interesting that my DAC shows support for S32_LE format but it says it’s in 24-bit. Would that suggest that FusionDSP’s S32_LE is also in the 24-bit domain, or is that one 32-bit? And, I imagine, that means there is conversion happening somewhere at some point (original source to S32_LE then back to whatever supported output of the DAC per AAMPP). I know it’s fairly common for this to happen with DSP, just curious of those details.

Otherwise, I had one hitch a couple days ago, two different times, where my music from my NAS wouldn’t play (in fact, one track played with static oddly enough). Rebooted the Pi with Volumio on it and it worked after that. Not sure this is related to the DSP or something else perhaps. The NAS is accessed through SMB which is hosted by another Pi running DietPi on the same network, wondering if a more direct NFS share might be better but also not sure this is the right thread if the DSP doesn’t have anything to do with it haha.

no comment…

That was me (hovation) trying to help out as well but I suppose they found their own way.

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Ok, no worries… I just think not fair to simply say it’s buggy when the issue probably comes from a wrong setting done by the user…

I hear you, those misunderstandings can be frustrating sometimes.

FusionDsp v1.0.24 beta

  • 5 presets for convolution mode. Very easy to compare different filters! No shortcut in ManifestUI yet.

Warning : This is a beta, need to remove previous, reboot, install… Settings are lost
Enjoy :wink:

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I’m too busy enjoying 1.0.23. It just works and works well :smiley:

FusionDsp v1.0.25 stable

  • 5 presets for convolution mode. Very easy to compare different filters! No shortcut in ManifestUI yet.

Don’t forget to reboot after install.
Enjoy :wink:


Good evening, I encountered such a problem when I use the filter then the volume drops to 40 dB, in the interface it shows the same 3 db. If you switch the volume to the equalizer, the volume returns to normal.
How can this be fixed?