1. Whilst have an uber-stable word clock will improve audio quality, we've got to keep things in proportion. as homerecorders, i think that there are loooaads of other things to consider (in terms of audio quality bottlenecks) before looking at clock stability.
Originally Posted by ad0lescnts
2. I'm not quite sure of how you've got things pliugged in here...is this correct?:
ext 8chADC--->002<---> Big Ben
the 002 *should* be able to use world clock from the ADAT input, and your 8ch ADC should be able to sync off the 002 provided that your sending to an input as well..otherwise it should have a BNC which you could hook up from the Big Ben?
To be honest with you there's a huge problem with daisy-chaining word clock signals. when a machine is clocking externally, the incoming clock signal goes thru a PLL (Phase-locked loop) which basically acts as a flywheel to try and eliminate any jitter from the incoming signal. Let's say, hypothetically, you had the word clock signal flowing in your rig as follows:
big Ben-->002-->8ch ADC
by the time the 8ch ADC receives and "implements" the word clock, it is effectively 3rd generation clock signal having gone thru a minimum of 2 flywheel stages. Of course, the final clock that your 8chADC receives has been reconstituted by the 002's PLL. Which means, therefore, if your 002 has a shite PLL your bigben's clock signal will be completely mashed up.
If you really want to clock externally, go for a star-shaped distribution method, like this:
Generally, it is always recommended to sync to the clock closest to your AD's when you're tracking....
There are 10 types of people...those who understand binary and those who don't
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