Phil Leigh;549671 Wrote: > To answer the original question - we can't "directly" emulate jitter as > it has no representation in a sequence of samples. What we can do is to > analyse the (VERY TINY) amount of distortion caused by a given amount of > jitter and convolve that into the mix... > > This is exactly how tape head saturation emulators or any digital > modelling plugin works.
That distorsion is measured in the hifi rags as some kind of "side bands" to a test signal , actually very analog to how tape decks behave re wov & flutter ? or i'm off the mark here ? these where also tested in a similar fashion back in the days where you measured side bands to a center frequency. What to call this kind of distortion it's not harmonic as it does not originate as frequency multiples of anything in the audio content ? Nor is it an inter-modulation product of any frequencies in the audio content ? Does the actual audio content at all modulate the signal in a fashion that influence the jitter ? Or is strictly an affair between source and DAC ? Afik there is some kind of coding even in spdif that makes the signal for example not being made up of only zeros for 2 minutes, then you would loose any clock . The signal must be some square-wave'ish shape all the time ? -- Mnyb -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J and assorted amps SiriuS, Classe'Primare and Dynadio speakers (including a pair of Contour 4 ) Bedroom/Office: Boom Kitchen: SB3 + powered Fostex PM0.4 Miscellaneous use: Radio (with battery) I use a Controller various ir-remotes and a Eee-PC with squeezeplay to control this ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=78790 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
