Tuesday, November 4, 2008

Third Overtone XO Crystal Oscillators, and the Banjo.


While others may have realized I was a nerd years and years ago, it has only recently occurred to me. I’ve since been trying to pinpoint the moment in which I entered nerd-dom.
I should have realized the day I decided to play the banjo instead of play little-league. In photos, it seems painfully obvious during my glasses/braces/growth-spurt phase. I don’t think anybody realized they were a nerd in high-school, although I honestly think all of us were.

But I only fully realized my nerdocity today, when I caught myself reading (and thoroughly enjoying) the following paragraph:

“While experimenting with internal clock designs, we found that we liked the quality of the audio better when the master clock frequency was increased. Due to the superior nature of third overtone XO crystal oscillators (they have inherently less jitter than fundamental XO oscillators because they have higher 'Q'), we decided to utilize the same clock that we use in the 002. We increase the original master clock frequencies, and then divide them down as necessary. We started with a pair of ultra-low jitter (1 picosecond delta sigma average) XO oscillators, one for 44.1 kHz and its multiples, and one for 48 kHz and its multiples. We divide these two frequencies using a proprietary method that keeps accumulated jitter to a bare minimum: under 10 picoseconds. Would you ever use the word "punch" when describing the sound of your 003? With our internal clock, you most certainly will.”

Holy crap that’s nerdy.

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