I speculate that DACs can be improved because the resonances may influence the dither in a way to make "uncertainty" more certain.
That is to say the converter's resolution improves. Bits that were in the "gray" area are now defined to be a "0" or a "1". What was unclear in the data now becomes clear and strengthened after applying resonance.
That is to say the converter's resolution improves. Bits that were in the "gray" area are now defined to be a "0" or a "1". What was unclear in the data now becomes clear and strengthened after applying resonance.