In another forum, I became aware of how DAC filter passband ripple causes echo of the signal in the time domain. This is not Gibbs effect, but a real reproduction of the signal at very low levels, and typically within a millisecond before and after the proper signal (in the case of a sharp linear phase filter). So a true echo. I am starting to do some listening to see if I can hear this and so far I don't think so (at ~-67dB echo level, ~0.7 msec time spacing). What is the feeling around here on this. I haven't read much on ASR about this, although I have seen some comments by @KSTR and @AnalogSteph mentioning it.
Does it make sense to resample externally to avoid this issue? Even if inaudible, it seems to me this is a much bigger deal than the difference between, say, 105dB and 120dB SINAD.
Does it make sense to resample externally to avoid this issue? Even if inaudible, it seems to me this is a much bigger deal than the difference between, say, 105dB and 120dB SINAD.