bhaagensen;549467 Wrote: > In the context of representing a sound-wave, there is no such fixed > separation. AFAIK one can in theory freely trade amplitude for time and > vice versa. This is the hole idea of PWM (or PCM if you will :) > > But let me try and put my question above in a sligthly different way. > Consider an original audio-signal and its corresponding representation, > S0. Then consider the same signal after conversion only with the > difference that it now also contains artifacts caused by jitter. > Assuming it doesn't clip or anything like that, this signal also has a > representation, S1. The question is simply whether it is possible to > model the nature of the transformation of S0 to S1 and such that it > could be implemented as a transformation in DSP? > > (note it is assumed in the above, that the samples are taken at exactly > the same times relative to the time of the audio-signal - only the > amplitudes are different in S0 and S1).
http://en.wikipedia.org/wiki/Picosecond Jitter is measured at picoseconds You need to have audio data and a "jitter free" DAC operating at 100's of ghz. To simulate the wave form the signal would have after a normal DAC most audio programs are only working at measly 192kHz sampling rate . it's simply not enough to simulate timebase variations in the ps range. I think most controlled listening test re jitter is done by "simply" disturbing a known good DAC design and ABX compare the results. -- 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
