Dac+Dsp profiles and SPDIF input

Cedric MARIOT

January 01, 2021 12:36

None

Happy New Year !

Since the last HBOS version, I'm fighting with DSP profiles, sound quality and SPDIF input for TV Sound. (PI4, DAC+DSP hat, Analog output to old marantz ampli)

- Version 12 is working well, SPDIF is active when TV is ON, but music 'DLNA' sounds metallic and flat.
- Version 11 has a great sound, but SPDIF input is never going active.

So, I tried to make my own profile from v11 and replacing some SPDIF data by v12 ones:

But SPDIF remains inactive :-(

Any idea ? Or alternative profile ?

KR,
Cédric.

Date Votes

4 comments

0

HiFiBerry team January 01, 2021 19:55

That won't work at all. You can't simply add metadata from another version as programs are different and will have different addresses. If you want to create a new DSP profile, you need to use SigmaStudio:
https://github.com/hifiberry/hifiberry-dsp/blob/master/doc/dspprofiles.md

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Cedric MARIOT January 01, 2021 21:15

I understand my failure with Metadata. I will take a look to SigmaStudio to create/modify profile.
But, are you aware about this SPDIF issue ? Is it the good parameters to change to make v11 profile properly work ?

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HiFiBerry team January 02, 2021 05:02

v11 had some bugs - including on SPDIF and therefore has been replaced by v12. Nothing else has changed and we don't see any "metallic" sound. We don'tr recommend to use older profiles anymore.

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Cedric MARIOT January 08, 2021 09:10

Following your last response, I made more tests and here what I hear:

- after reboot, v12 has the same good sound than v11, you are right !
- after some hours without using it, no change
- but, after watching TV, so using SPDIF input and back to Qobuz music throw mConnect+DLNA source, sound is flat again. So I restarted my hifiberry system and sound is great again.

I have tested 5 times, always the same.

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