Dr. Aix commences a detailed look at DSD, beginning with the assertion that there are only two real components in digital audio; the word length and the sample rate. Typical word lengths are 8, 16, and 24-bits. And then there is 1-bit PCM…also known as DSD or Direct Stream Digital. Each additional bit lowers the noise floor of the system by about 6 dB and dithering helps in making any noise present in the system more uniform across the entire frequency spectrum. But you need at least 3-bits in order to use dither. It’s not possible to randomize a single bit.
Check out more on DSD in this intriguing series…Via realhd-audio.com