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SRC

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  1. I agree that having a master clock is beneficial in the audio processing chain when real time processing is taking place. Asynchronous clocks can create lots of problems. But that is not "jitter". That would be things like dropped or repeated samples, or sloppy sample rate conversion. These things can cause images of the sound to appear at the wrong frequencies.<br /> <br /> So synchronous clocks are good, but the jitter matters only at the ADC and DAC in a well designed system. <br /> <br /> In DAC's the upstream jitter can impact the jitter that the DAC gets. That is why "asynchronous" USB DAC's are so good: The DAC clock controls the upstream data flow, so the DAC does not have to depend on a PLL generated clock.<br /> <br /> -SRC
  2. "The entire digital process was driven with the Antelope Audio Atomic Clock, the industry leader in digital clocking technology. It enables the entire digital process to reference the same highly regulated clock master, preventing any loss in the digital signal due to jitter and clock degradation."<br /> <br /> The truth is, the only places that clock jitter will matter in any reasonable system is at the ADC, and again at the DAC, not in "the entire digital process". Numbers are numbers, and the algorithms control what numbers you get, once you are in the digital domain, not the processor clocking.<br /> <br /> Anyway, thanks for a great web site. I am new here, but have been involved in designing digital audio chips for about a dozen years. My current interest in audiophile gear is in digital amps, such as the Tact and Lyngdorf products, although I am still driving my old NAD receiver from the built-in DAC in my Mac!
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