On Sunday 05 March 2017 15:18:00 GiaThnYgeia wrote: > Curt: > > In case this wasn't clear: we're imagining clay being fashioned upon > > a potter's wheel, and the striations that occur in the clay as it is > > molded (which might possibly produce, according to Charpak's > > conjecture, a sort of analog audio recording of ambient sounds in > > the finished product, e.g.--"Hey Mosche, got any more of that > > Egyptian beer we were drinking the other day?" spoken in some > > obsolete language no one has ever heard before). > > I don't know about clay, it sounds more probable that prehistoric > voices affected reflected light to the universe and its returning > reflection may incorporate data that when decoded may reveal those > voices. In other words some prehistoric sounds may not be heard yet. > > Back to shanity, how does a microphone produce an electrical wave that > can be translated into sound and how a wave may take the form of > electrical current that produces sound through a speaker?
Very simple. With the glaring exception of the modern AC induction motor that in 99% of the stuff we buy, ANY other generator can also be used as a motor, including the ultra cheap electret condenser microphones, ditto any speaker, including the peizo tweeters, is also a microphone. Its part of the basic physics everything we use works by. > It is not > like particle acceleration science, it is stuff that many guitarists > now and most guitar repair-persons know. The question that is > relevant to the list is why would a security minded system allow such > noise to be communicated? Whatever that noise is, it shouldn't be > there, as if it is there it can be anywhere. > > Your appeal for case dismissal is denied! > > By the way, it takes about 3' to download FMIT or something similar, > lower the db cutoffs and increase the frequency range and if it is not > there we may have something to compare. I don't readily have a laptop > with a battery strong enough to stay on without AC, I assume they have > less electrical noise. My noise is around 21,5KHz-23KHz with an > emphasis around 22,2... which can't be random, but abrupt vibrations > on the case register within that noise wave. We are in the 220v/50hz > world, so it would be interesting what the noise freq. is on 110v/60Hz > > ... wait did you hear that? It is the noise of your world crumbling > ;) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>
