@jefflz
Pretty much.
If @audioengr’s measurements are accurate, the SONOS Connect has 9ns of jitter (which I see in the table on the graph, but then for his product, I see it reading 70psec and not 7psec, so not sure), and if your DAC does not jitter reduction, 9ns translates to a noise floor that’s -68dBFS (CD is -96dBFS) or a bit more than 11Bits. Now, he also states that’s a difference of 450x, I don’t know where that number comes from, as the time difference is >1200x more, the bit-depth is <2x more, and the number of bits is ~800x more.
Also keep in mind that the noise floor in 11Bit is still audible, but faintly so. Most all music/tv/movies have 105dB as their peaks/clipping point, and most rooms don’t have a noise floor lower than 30dBC (my open-floorplan living room is ~46dBC, using an actual calibrated mic, not a phone app) even if treated with a good amount of acoustic panels. 105-30=75, not far off from 68. This is also why 24Bit offers no audible benefit for listening, higher bit-depth is only useful for the actual production of the music as they can gain the various recordings of the instruments and whatnot while still having a low noise floor.
virtually inaudible except under very rare circumstances
Pretty much.
If @audioengr’s measurements are accurate, the SONOS Connect has 9ns of jitter (which I see in the table on the graph, but then for his product, I see it reading 70psec and not 7psec, so not sure), and if your DAC does not jitter reduction, 9ns translates to a noise floor that’s -68dBFS (CD is -96dBFS) or a bit more than 11Bits. Now, he also states that’s a difference of 450x, I don’t know where that number comes from, as the time difference is >1200x more, the bit-depth is <2x more, and the number of bits is ~800x more.
Also keep in mind that the noise floor in 11Bit is still audible, but faintly so. Most all music/tv/movies have 105dB as their peaks/clipping point, and most rooms don’t have a noise floor lower than 30dBC (my open-floorplan living room is ~46dBC, using an actual calibrated mic, not a phone app) even if treated with a good amount of acoustic panels. 105-30=75, not far off from 68. This is also why 24Bit offers no audible benefit for listening, higher bit-depth is only useful for the actual production of the music as they can gain the various recordings of the instruments and whatnot while still having a low noise floor.