I believe the digital world is much more deterministic
than analog one. If device has one number in input and
the same number in output this is bit-perfect to me. Is
Digi bit-perfect device?
The software also plays important role in bit-perfectness.
Is it valid to say that only in combination with Volumio
Digi is really bit-perfect? For example in combination with
XBMC it's not bit-perfect as the later has a mixer.
Thanks!
Date
Votes
8 comments
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HiFiBerry team Hi,
the output is bit-perfect. However many software is doing some kind of post-processing. Even Volumio might modify the data stream depending on the setting (e.g. re-sampling). Just having a mixer does not mean you can't output bit-perfect. If the mixer is set to 0dB change, the output will still be unmodified.
Best regards
Daniel -
hifi Thank you Daniel,
You mentioned several settings which can modify output.
Is there anything else? It would be great to list them
here for different Linux distros based on XBMC and MPD
(e.g. OpenElec, Volumio etc).
Thanks. -
HiFiBerry team There is no easy way to test this. Therefore we cannot say. However sometimes the post processing might improve sound quality. Upsampling 44.1kHz to to 96 or 192kHz might even improve the performance of some DACs as clock recovery might be better. Therefore there might be situations where bit-perfect is not the best solution.
Best regards
Daniel -
hifi That reminds me digital zoom in photo cameras. Yes it can
be good but... optical is better :) -
nattaphoomd Does anybody know?
How to set Volumio enable re-sample 44.1kHz to 96kHz ?
I'm looking for the way to improve sound quality from 44.1kHz
Thank for your reply. -
HiFiBerry team Is far as I remember, resampling can be enabled from the GUI somewhere in the settings.
Best regards
Daniel -
Marti Mcfly In the same regiaster of discussion...
Looking at picture, in OUTPUT/DEVICE, I choose direct hardware device without any conversion. This means it is bit perfect, in essence? I can still control volume in software (VLC)
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HiFiBerry team HI,
this is how VLC works. VLC will modify the digital sound data if you change the volume. I would not really recommend VLC for music playback. Check out our software page, you can find music-optimized distributions there:
https://www.hifiberry.com/build/software-selection/
Best regards,
Daniel
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