Julf wrote: > > He is basically verifying that it is a completely artificial test signal > designed to illustrate the symmetry of the DAC (and it is only relevant > on old-fashioned non-oversampling DACs anyway) > > > John_Atkinson_post_34 wrote: > > > > With the vast number of DACs now sigma-delta types, this test of > > obsolete, But I still include it because it also shows you at a glance > > how high above the DAC's noisefloor the LSB transition lies > > > > >
Exactly. Also note that he correctly said that delta-sigma DACs eliminate the problem of bit-for-bit linearity. Any distortion in a sigma-delta DAC is in its analog components which number very few. Oversampling does not address the problem of DAC amplitude linearity. The first generation Philips players were oversampled, but used R-2R ladder DACs that were therefore highly dependent of parts quality for amplitude linearity. ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=105769 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
