Originally Posted by ASUSXONAR
We have been looking into this. During development we were given a choice of four different filter options (not all at the same time obviously). The current filter was chosen and it favors high sampling rates (88KHz upwards), the side effect being the sharp cut-off for lower sampling rates.
We're working with the developer and discussing a new filter that is less aggressive at lower sampling rates. There are side effects to every choice, but we'll try and do something that is more universal.
Thanks for the response ASUSXONAR.
IMO, upsampling is by nature more important in the lower sampling rates. If anything, I think the algorithm should bias towards better sound with the 44/48 rates and generally try to leave the hi-res stuff alone. Furthermore, the fact that most digital music exist at 44kHz makes it imperative that these lower sampling rates should be optimized.
As I noted on my blog post, it looks like there's some really good engineering in the Essence One. ASUS has clearly been targeting the enthusiast market strongly with the MUSES and PLUS editions, so this oversampling result is disappointing. The hardware's there, so it would be great to see this blemish be repaired.
Hope to hear of changes soon!
Edited by Archimago - 2/27/13 at 11:37pm