BruteFIR addon for ALSA/PulseAudio

Hi chipfunk,

this sounds very promising!

I would like to try it, but the link to the addon-brutefir seems to be broken (error 404). Could you please fix it?

Thank you

hello chipfunk,

thank you very much for fixing the access issue

I downloaded all files and installed everything on my S912 TV Box running LE 11.06.

I did not yet setup any audio connection (here i have to learn a lot and try to fiddle out the correct setup), but i can confirm that brutefir service is already up and running and the PULSE:Null Output is selectable in the System/Audio Setting.

So the first steps are done !

Again, thank you very much and please keep on going

best regards

yes, i can confirm that after selecting the PULSE:Null Output audio works via HDMI.

I certainly will come back to you once i'll try to activate my USB-DAC(s) ihave attached to the TV box instead of the HDMI as sink(s) for brutfir output. And setting up a room correction filter will also be on my task list (Euipment is already availabe REW, UMIK, ..).

Thank you for you kind offer to provide further assistance !

Hello chipfunk,

here's a short update.

Your Brutefir adaptation works great !

I did the room correction measurement with REW and created suitable filters with REW and RePhase.

Replacing the "dirac pulse" with the created new filter .txt files did not work at the beginning. No sound. Later i figured out that i missed to set the filter_length in the .brutefir_config in accordance to the selected filter lenght to 65536 (before 1024). Now it works

Did not expect to get it working that fast.

Next i try to get the external DACs to operate with brutefir.

Kudos to you and all brutefir contributors.

best regards

Hello chipfunk,

I think i need support in getting the Usb-Dacs to work together with brutefir.

Could you please give me some advice? The name of the Usb-Dac Alsa Devices are attached below.

In the first place there is no need to operate brutefir with hdmi and usb-dac, usb-dac and brutefir alone would be perfectly fine.

So maybe you can advise some concrete modifications of the existing standard hdmi setup?

thanks in advance

thanks for your fast response, here's the aplay log

... and here the card id's

It works!

I added both USB DAC modules (device_id=USB and device_id=Impacto) to the startup.sh script :

# Provide ALSA output
pactl load-module module-alsa-sink device_id=Impacto >> $PULSEAUDIO_MODULES_FILE # Impacto
pactl load-module module-alsa-sink device_id=USB >> $PULSEAUDIO_MODULES_FILE # AudioBox USB
pactl load-module module-alsa-sink >> $PULSEAUDIO_MODULES_FILE # Hdmi

now i can switch between the interfaces HDMI, USB Audio DAC and Impacto DAC via .brutefir.config:

# module and parameters to put audio
output "left", "right" {
device: "pulse" {
# server: ""; # Host to connect to
app_name: "BruteFIR 1.0o-pulse module"; # This application name
# device: "alsa_output.default"; # -> select HDMI
# device: "alsa_output.Impacto.analog-stereo"; # -> select Impacto USB Dac
device: "alsa_output.USB.analog-stereo"; # - > select Audio Box USB-DAC
stream_name: "Output of BruteFIR service";
};
sample: "S16_LE"; # sample format
channels: 2/0,1; # number of open channels / which to use
mute: false,false; # mute active on startup for each channel

´Chipfunk, you are my hero !

Hi both,

I stumbled across this thread while looking up how to do room correction in LibreElec. And it seems like the BruteFIR add-on clearly fills a niche for room correction in LibreElec which is missing.

I initially thought I would use the https://github.com/wastis/PulseEqualizerGui, but it seems LibreElec doesn't use pulseaudio by default and is missing pulseaudio-equalizer anyway.

Are either of you still using this add-on ? I wonder if it works on libreelec 12 ?

coleb I'm curious how you did the room correction with REW, do you need to have REW running on the kodi device ? Or can the playback and measurement be done on two separate devices ? There are so many guides to REW, if you have one in particular I'd be happy to have a recommendation.

Thanks !

Quote from surkat

Hi both,

Are either of you still using this add-on ? I wonder if it works on libreelec 12 ?

coleb I'm curious how you did the room correction with REW, do you need to have REW running on the kodi device ? Or can the playback and measurement be done on two separate devices ? There are so many guides to REW, if you have one in particular I'd be happy to have a recommendation.

Thanks !

Hi surkat and chipfunk,

I can confirm that my aarch64 compiled brutefir addon version works well on LE12 and on latest nightly LE13 (AML S912) too. For whom it may concern it also works very well on my Coreelec-no nightly (AML 905X4).

For room correction measurement and correction data generation you need a PC or Mac, Micro & SW like REW and RePhase. It takes quiet some time to get the best Workflow. Finally, your device running brutefir just needs the correction data (i.e. textfile) generated by REW and RePhase to do the propper correction. No need to run REW on the brutefir device.

Currently i'm very busy prior Christmas, but later on i will be happy to provide further support.

Here‘s the link to my Addonbuilds for Generic Amlogic Devices and a description that helps to work with REW and RePhase. Have fun

brutefir – Google Drive

The addons work on either installation LE12, LE13 and CE