Several people have very good high frequency hearing, and can hear the lowpassing of MPC and AAC (both around 16 kHz). One person (gecko) seems to find this to be a significant defect.
Is it possible that this is what you are hearing and that raising the lowpass filter *might* help? It might explain why there is little or no quarrelation between the different --quality settings tried.
Have you tried the specific part I suggest : 10.00 - 11.50 ? With an headphone ?Anyway, thanks for testing.
I don't think there is any need to be shocked since, again, MPC is lossy. Artifacts are theoretically (and often pragmatically) possible in any situation regardless of quality setting used.
ABX of 10-11.5 was trivial even at Q10 - 13/14. But, I believe these samples are still special cases, and bringing them up will do nothing but help make improvements.
Now, on the first suspicious sound I will hear, I probably will accuse mpc for this
QuoteNow, on the first suspicious sound I will hear, I probably will accuse mpc for thisThat's what I'm constantly doing, but most of the times, I must admit that it's the original that sounds like an MPC artifact, and the compressed file sounds exactly the same. I tried parts of Kovenant, Arcana, MacTatus, that seems to have nasty MPC artifacts, but no, the originals sound like this. Astral Projection sounds exactly the same, exept that the effect is amplified after MPC encoding.I really have to try to ABX in order to distinguish between real and fake MPC artifacts.That doesn't turn MPC artifact unimportant for me. Even if this kind of sound can be found in original recordings, I don't like the sound of it.