Keep the Mac,find the other piece of the puzzle,its around,your almost there.Try computeraudiophile.com for more info.Chris will know of something I bet,good luck,Bob
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I found one other reclocker, but I am guessing the parts are junk:
Behringer ULTRAMATCH PRO SRC2496 for $129.00!
Now, just cause it is cheap, does that mean it does not do a good job of passing the data thru to the dac while keeping extremely accurate time? After all, its well known that as timekeepers go, a $10 timex does a better job than a $100,000 patek.
Has anyone used this?
I bought mine off ebay new
I really can;t answer your questions as I don't understand any of this from a technical perspective. I followed the advice of Stepehen Balliet at Reflection Audio and have been very leased with the results.
I attempt to get an answer to your question from Stephen and post
I'm interested too in why this works. I've been trying to find an intelligible(!) article on clocks and jitter reduction, but without a lot of success. There are a number of good articles out there that explain Jitter, but they don't go deeply into the cure. At least, not so a non-engineer non-math geek can understand it!
Audioengr, you seem to have a great grasp of this - I know you produce the Pace Car, which a lot of people like a lot. Are there really so many clocks involved? Could you please define them for us, and their different roles? It would certainly broaden my understanding of this jitter problem we area all looking to solve!
According to Wikipedia, the Word Clock is not a device; it is a clock signal generated by the master clock device.
In this context, it seems to me that the Antelope serves the role of the Master Clock, sending out a synchronization signal to all devices, aligning their time and thereby reducing jitter? Is this an accurate understanding of the functionality?
Portypop - I'll try a second time:
I2S is the bus most commonly used to drive modern D/A chips.
I2S is comprised of:
Master clock or MCLK - 256fs
Bit clock or SCLK - 64fs
Word Clock or sync - fs
Fs, or sample rate frequency is generally 44.1kHz for ripped CD files and 96kHz for master tapes.
In older DAC's, the Word Clock was used to clock the D/A conversion, but most modern DAC's use bit-clock. Master clock is generally used for digital filtering.
Word clock is the lowest frequency, so it is more easily used to synchronize the various digital devices in a recording studio.
For reducing jitter, reducing word-clock jitter is not that interesting. It may have a small improvement in some systems, but the bit-clock and master clocks are the ones that affect the D/A chip most.
Excellent and concise explanation - I thank you! Part of the difficulty of reading about this stuff is that it seems that many of the authors don't have such great command over the technology themselves, and terms have a regrettable tendency to be used interchangeably when they are actually not.
So really Jitter reduction is about bit clocks and master clock. Word clocks are incrementally beneficial in comparison.
Now I have some direction to try some things out!
Thank you all!