[Mogens V.]

The latter discussions on sample rates et al.. makes me think of other
threads in here where clock skew and jitter was discussed.

In the '44100 a new take' thread, Scott Dorsey wrote:

... At higher sampling rates clock accuracy becomes that much more
important, and the clock artifacts change. This alone can explain
the differences between converters running at different sample rates.
... but it's not the whole story. To get that, you have to
actually measure the phase noise on the clock at different rates.


On many effects devices (mainly a guitar player), clocks are rather
simple implementations, and though the gear sounds good, I sometimes
wonder if better tone may be had with better clock designs.

Somewhere (IIRC in here) someone mentioned a Line6 digital floorboard
(again IIRC) having wordclock input, which sounded significantly better
used with an external reference clock.

I currently use a Digitech TSR24S and a Lexicon Vortex.
Such devices use different clock speeds, i.e. the TSR use 48Khz,
Vortex 32Khz, so opting for one common master is less practical than
modifying clocks (if needed).


I don't remember the DAC used in the TSR24 (AnalogDevices ?).
The Vortex schematics shows a Cirrus CS2416 64x oversample
DeltaSigma converter with build-in aliasing filters + pre/de-emphasis.

They both sounds great in each their own way; the TSR maybe a Bit
'digital clean' - sorry about the lame expression.


Takes and pointers on clock and converter issues in such units?

--
Kind regards,
Mogens V.