Hello Friends! Here are interested in this issue. What are the modes and what are they for? In my e-DAC has a 2x 4x 8x modes, but I always use 2x. Let's share our experience!
2, 4, 8 X OVERSAMPLING
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Unless I'm missing something, it seems rather straight forward to me what the function you're describing is. Umm, assuming it really is oversampling we're talking about that's perhaps built into your DAC, the point would be that in cases where there really is a well designed up/down-sampling algorithm, the sound (particularly in the high frequencies) can be improved because of how many DACs may actually work better with higher sampling rates. Some, particularly at 192 kHz, may in cases actually work worse though.
What certain upsampling algorithms may also do is make guesses of how the soundwave would likely be more accurately represented at higher sampling rates (rather than simply resample) which would serve kind of as a better alternative to dithering in instances.
I'm not sure if that was your inquiry, but that's what I would have to say on this subject matter at the very least.
Edited by Typhoon859 - 11/19/13 at 7:38am