Tuesday, July 12, 2011

Stream of consciousness

A couple weeks ago, I looked into Active Noise Canceling (ANC) technology. I already understood the concept (wave superposition of an inverted signal to yield a zero sum), but it was interesting to see that the ANC chips were essentially just opamps that relied on the user for gain values and audio filters. I don't have the same level of understanding of analog circuitry as I do digital, so I put off deciphering the filter elements and instead just bought a pair of ANC earbuds by Audio-Technica. They should arrive in time for the 2-week roadtrip starting this weekend. Maybe I'll get around to making my own sometime. discreet implementationchips with digitally set gainanalog chip with real values for filters

I also bought two Kingston 64GB solid state hard drives. They were on sale. After flashing new firmware (they have bad firmware - which is why they were on sale), they will be added to a custom desktop in RAID 0 configuration. The desktop wasn't being used, so I am working on getting it to match and sync with my laptop. The RAID 0 should yield 128GB at about twice the speed of either the drives individually. Extrapolating from my laptop's performance with an Intel SSD, this is going to be amazing. 

I also bought a broken TI84+SE calculator. Goodness, I have been spending a lot of money recently. Hopefully I can get her working. If all goes well, I plan to backlight her and maybe even add solar power and rechargeable batteries. I have worked with Li+ batteries before, so this should be doable. {Yes, I use the female gender when referring to electronics (like people do with boats).} I had a strong urge right then to place a semicolon after that last bracket. 

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