You're still not understanding it.
Intersample peaks come from 2 samples loud enough so that the smooth curve drawn between them rises over 0dB. It doesn't require any processing. It just happens with all DACs.
The digital connection is just transferring numbers, not an analog waveform. So, two adjacent samples at 0dB (assuming they're not clipped themselves and were actually at exactly 0dB in the origianl signal) or otherwise loud enough to casue an intersample peak won't clip the DAC....because there is no DAC.
If you run that same signal through the DAC on the CDJ, it'll clip that peak.
The processing they do (MT, tempo shift) is a separate issue. And part of the reason they use floating point math is so that the processing can't clip the signal. The only time it will is if they do something dumb when converting back to a 16 or 24-bit PCM to output either to the DAC or to S/PDIF. And that should be both predictable and dealt with appropriately.
Bookmarks