OK, so yer lie detector. It’s been something of a blogosphere hit. And in the comments, we have Nigel, who appears to know something about acoustic signal processing – in the sense of “makes speech recognition systems for Eurofighters”. It seems that rather than being a signal at a frequency between 8 and 12Hz, the…
Read More voice stress clarityOK. So we looked into voice stress analysis and the world telecoms infrastructure. And we concluded that proper VSA – the sort with the peer-reviewed scientific papers an stuff – was technically impossible. Recap; the original VSA research is based on a change in a signal in your voice between 8 and 12Hz, but even…
Read More Dr. Benway strikes again, with Venture CapitalI was going to fisk the Government’s depressing sudden love affair with the discredited nonsense of “lie detectors”, but I see the Ministry has already done it. Go and read; it’s an instant classic. And as a bonus, there’s a great comment from the Great Simpleton, who you occasionally find in comments here, about some…
Read More G.729 and the welfare stateIt all started with this Making Light thread; Bill Higgins was musing about improvising a radiation detector, which led him to this deeply cool device – scroll down for the cunning methodology that goes with it. But James MacDonald beat him, I think, with this cloud chamber implementation: Field-expedient cloud chamber:Needed: shot glass. High-proof vodka…
Read More Homemade particle physics