jaysung;237552 Wrote: > > How is this increase of bitdepth brought about? > With 16bit I can cover a range of 0 to 65535. Then I need to map this > range of numbers to volume levels between 0 noise and approx. 96db > loudest. > How can I increase the bit depth without just guessing details I really > can know. >
Yes when you increase bit depth you end up with a signal with just a 96db dynamic range but expressed in 24-bit data. At this point the 24 bits could capture a larger dynamic range but don't. So the least significant 8 bits of the 24 bit data are zeros. However, when you apply volume attenuation to the 24 bit data, the least significant 8 bits start to get used. (Imagine you had been stuck with just the 16 bit data and attenuated that: information would start to be destroyed below the level of the 16th bit as you attenuated the signal. If you had a 1 or a 0 in the 16th bit and half the level there is nowhere for that bit to go - it becomes lost and resolution decreases.) The DAC processes in 24-bit data. In terms of actual resolution you can't create more than the original 16 bits by increasing bit-depth to 24, but at least you are able to preserve 16-bits during the attenuation process. Darren PS: I confirm the volume control is digital only. PPS: You could have a more complex algorithm than the one above, but the basic point about 24-bits is the same as described above. -- darrenyeats SB3 / Inguz -> Krell KAV-300i (pre bypass mode) -> PMC AB-1 Dell laptop -> JVC UX-C30 mini system ------------------------------------------------------------------------ darrenyeats's Profile: http://forums.slimdevices.com/member.php?userid=10799 View this thread: http://forums.slimdevices.com/showthread.php?t=39611 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
