Reply To: Noise shaped dither – Does it cause issues with DSP-based volume controls?

March 24, 2023 at 4:09 pm #5566
Bob Katz

    Responding to JJ: Regarding the question whether noise shaped 16-bit original dither, might cause a problem with subsequent processing (e.g. digital volume control) I totally agree that it’s not a problem, and you would have to turn the gain up so far to MAYBE notice the original high frequency dither that is also not a problem.

    Plus, as I tried to illustrate in my initial post, if the subsequent DSP is a monitor controller outputting a 24 bit word, then the original HF noise shaping is even less of a problem if the monitor controller is attenuating rather than boosting (highly likely). Even if it’s boosting, we assume that the listener is boosting because their analog monitor does not have enough acoustic gain to reproduce the source, so everything would still be proportional, and the original HF dither would still come out at about the same level for the same resultant SPL. We assume a normal listener listening at a normal SPL.