Moode 7.01 does not start on newest RPi 4 8GB RAM

[Tim Curtis]

[quote pid='47799' dateline='1690471430']
Claims that the OS or playback software introduces distortion in the audio data needs to be accompanied by proof that shows the distortion in a signal trace and identifies exactly what in the code is causing the distortion otherwise consider the the claims to be bogus.

Hi Tim, thanks for explaining. I am a sole listener and can not compete with the technical background you have.

What I understand from your explanations is that SQ can suffer on the digital side and not only after converted to analog. This explains why I can hear a difference although using the same hardware just with another version of Volumino or Moode.

Now, I have not the technical knowhow to measure this, sadly. And what could be measured, really. What makes the data show better separation of instruments in the room, for example? Impossible I guess.

Thanks to everybody

The technical part is not really whats important in my posts its more the message that while obviously distortion can be introduced in the audio software pipeline, it can be measured and it's root cause can be identified and fixed. There is no such thing as "invisible distortion" or "invisible sound wave changes".

As far as hearing a difference in sound characteristics goes, either there is an actual difference in the sound waves being rendered which will show up in a signal trace, i.e., in the data, or the difference is perceptual and only exists in the mind.

Without any data to back up your report of hearing a difference and attributing it to something in the softwares its not possible too know whether what you are hearing is real or perceived.

ETA: When I refer to differences in sound or sound waves, signal traces, data, distortion, etc there is no attempt to qualify the difference in terms of "sound quality" because there's metric for sound quality.