Hi,
I have installed the DSP module on my DAC2 HD, booted under HiFiBerry, and was able to use everything, make some measurements, have some room correction filters, equalisers, saved all to the EEPROM.
Sound good.
Now, booting back under Moode, under which the DAC2 HD alone played perfectly, now I have no sound. What should I install in order to have it working?
All the best,
Greg
I recommend to install dsptoolkit:
https://github.com/hifiberry/hifiberry-dsp
Without this it's basically impossible to debug something.
Well... The problem is Moode does not even boot no more.
I'll try with a fresh image of MoOde Audio.
Does the DAC2 HD + DSP is already supported by the kernel? What should I use as an audio card into MoOde?
Could just switch from hifiberry OS to moode would wreck this one if last time Moode was shut down it had only the dac2 hd attached, then when rebooting with the dsp in place with a dsp program saved and room equalisation saved on it too, would it be totally lost?
I tried also to reboot without the dsp module, but even so MoOde does no more want to boot. I can’t achieve to ssh on it nor have its http local page.
Should I use a fresh MoOde image, first install dsp toolkit, then have the dac2 HD plus dsp module recognised then see if switching back to hifiberry os and saving a program on it with room correction, it will then work? Should I have to somehow extract from hifiberry via shell a file or two and have it installed under Moode to have it work with the dac2 HD with dsp?
If the system doesn't even boot, this has nothing to do with the DSP. Try a fresh installation.
There is no kernel support for the DSP. The DSP is totally transparent for the audio stack.
Hi,
after a hell of flashing cards and reapplying scripts and so on, I managed to follow the REW tutorial instructions, but once I did this:
dsptoolkit install-profile https://raw.githubusercontent.com/hifiberry/hifiberry-dsp/master/sample_files/xml/dacdsp-default.xml
I have only but a very minute buzz and nothing else in the speakers...
I did try several sample_files for github, with no success.
What xml profile should I install into the DSP add-on module in order to at least have sound, even without pushing new filter on it?
Thanks for your help,
Greg
Ok, booting back under HiFiBerry OS, I achieve to push back the V13, now I have sound.
but then, when I try to apply-rew-filters I receive this:
dsptoolkit apply-rew-filters /tmp/test1.txt
'20 filters given, but filter bank has only 16 slots'
Rew built a 20 filters filter, but the DAC does not seem to be able to load it... Is it due to the V13 program stored into the DSP? What am I missing here?
Our DSP programs only have 16 filter slots. Remove some of the filters from REW: Uisng 20 filters looks like you overoptimised. Don't try to fully flatten the frequency response. This will look differently anyway if you're just moving your head a bit. On many cases, it's best only to optimise the range <300Hz, because this is where room acoustics really make problems.
Just to know, of all these xml programs, which one are compatible with the DSP add-on module on DAC2 HD, and which one are with DAC+ DSP? Just to avoir over and over again meesing up everything, having to reflash SD cards with Moode/HiFiBerry/Libreelec+Kodi... I know it's part of the fun, but I'm at least to my 50 attempts in two days and it's a bit of a dispair to have this working. And I know DSP is not easy nor accessible easily for the newcomer...
I'll search where in REW I can set the maximum number of filters (if possible).
Once I have a REW filter txt file with only 16 filters, I think it will work.
Now, as I understand this, this will only be an IIR filter to equalize somehow speakers and mitigate for room effects. But what now to assess the impulse response? I understand this has more to do with a FIR filter. But am still at loss how to produce this, and don't know if I can correct both frequence response with an IIR filter and in the meantime correct for impulse/phase with a second FIR filter... Will the DSP add-on module (or the DSP integrated into the DAC+ DSP) apply both together?
Thanks anyway for the help.