Originally Posted by nihontoman
someone also said it does not affect the bit depth . I can't pretend to know this stuff, so...
Also this DAP has a frequency range of 20hz to 20khz, meaning any sample rate above 40khz will be cut off anyways. So pointless to have 24 bit and pointless to have higher frequencies, even IF you would be able to hear them.:)
The loudest a DAC could play is called 0 dBFS, say all bits are on.
If we lower the volume digital we ‘shift’ to the right as we do get a smaller number
Yes, we do loose resolution
The same happens when using 24 bits.
The difference is that with 16 the truncation (quantization error) happens at -96 dBFS hence the dither will be there too. In this example only 8 bits are left.
With 24 this happens at -144 dBFS and this is a value below what any DAC can resolve.
Playing 16 bits audio on a 24 bit DAC sounds like the ideal solution.
If we reduce the volume by -48 dB (8 bits) we still have the full 16 bit signal.
No loss of resolution at all.
Theoretically, it works this way.
Practice is a bit different.
The best DACs can resolve 22 bits max.
-96 dBFS is very soft, we probably won’t hear much below this level.
The bits might be all there, if we don’t hear them we still have a loss of resolution.