What is time smearing in the digital audio domain?

Question

Something I need explanation for...

Answer 1

'Time smearing' is the name given to the jitter, skew, and drift in the sampling rate of a digital system. It causes bandwidth increases and frequency smearing in the reconstructed signal. In audio systems it usually isn't noticeable. In imaging systems it can cause massive problems with artifacting, particularly if it's only 'quasi-random' and the data is peing processed by autocorrelation and/or multidimensional transform techniques.


Doug

Answer 2

Time smear is a dispersion of enrgy in audio signal caused by steap low pass filter.
It less audible when you listen first time. But as more times you listen the same music file the time smear became more significant for your ear and low resolution of digital version(44.1 or even 96khz) seams to be not acceptable when comparing with it analog source.
The CD format(44.1 khz 16 bit) seams to be better than analog tape when both made from the same analog source when you first time listen. But when you listen more times the CD format much worse than even audio cassete.