Rockbox General > Rockbox General Discussion
Preferred Ogg quality setting
CatBus:
I didn't do a proper ABX test, but not too long ago I did do an informal multiformat, mutibitrate test before I started encoding my collection. I burned compressed samples back to a CD, and did my testing on a stereo instead of a PC (to cut down on background noise and resampling issues), and used some decent headphones. I read up online on problem samples, what to listen for, etc. I fully expected to need nearly 200 kbps to get something that sounded EXACTLY like the source.
And then, for me, LAME MP3 VBR reached transparency at ~160kbps, which impressed me. aoTuV Vorbis reached transparency at Q2 (~96kbps), which completely shocked me and I had to re-test to confirm I hadn't accidentally mislabeled my test CDs.
So given that choice, it was pretty clear which one to use!
Siku:
I guess all of you could distinguish between encoded and original file if you knew what to look for. Every codec leaves characteristic artefacts in audio, which can usually be distinguished with proper training. But I don't personally want to train my hearing. Ignorance is a bliss :)
CatBus:
--- Quote from: Siku on September 01, 2006, 10:50:09 AM ---I guess all of you could distinguish between encoded and original file if you knew what to look for. Every codec leaves characteristic artefacts in audio, which can usually be distinguished with proper training. But I don't personally want to train my hearing. Ignorance is a bliss :)
--- End quote ---
Don't be so sure. I'd done careful training and preparation and came to the exact same conclusion as you: Q2 is transparent. Maybe deafness is bliss :)
jaybeee:
q4
- sounds bloody great to me, so why go any higher.
- small files at that setting & so less impact on battery than with a higher setting
- as I rip all my CDs to flac I just transcode to Ogg Vorbis for DAP listening. So that allows me to choose a lower quality setting that if I were simply ripping to Ogg Vorbis from CD for archive purposes (I'd never do that anyway).
I use the Lancer compiles btw. Ogg Vorbis encoding is fast, and with lancer it just flies.
belly917:
I voted for q5 because it's the average of what I encode at.
But I will change that depending on what I'm encoding.
q4 for stuff I won't listen to all that much
q5 for most of my music
q5.5 or q6 for high rotation music
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