[sdiy] LFO, analog computers

[Sebastian Kuehnl]

In the contrary to sub audio frequencies causing uncontrollable muscle
relaxation I suspect this one is not about a specific magic frequency but
rather simply the range where humans' pitch perception starts as opposed to the
perception of single beats below this range, the brain being irritated trying
to figure out the "border", causing stress.  - ?


--- danial stocks <diode at hotmail.com> wrote:
> well it essentially is 17 hz.. really 17.xxx close to 17, my sig gen doesnt 
> come with a 3 dig readout, just the pointer needle was 17, and a little bit 
> off.. dont have cool edit so I cant really try that out unfortunately.. If 
> cool edit has a nice incremental modulating thingo , if anyone wants to try, 
> I'd recommend starting at abt 16.5 hz and going up maybe 0.01 or 0.1 hz at a 
> time [depending how patient you are]
> cheers,
> Dan
> 
> 
> 
> >Why don't you try finding out what exactly that
> >frequency is and then use that as a phase modulation
> >frequency in Cool Edit on some of your favorite spacey
> >tracks and see what happens?  Let us know, (if you
> >still can).
> >
> >----------
> >From: 	danial stocks[SMTP:diode at hotmail.com]
> >Reply To: 	danial stocks
> >Sent: 	Thursday, February 15, 2001 6:33 AM
> >To: 	synth-diy at node12b53.a2000.nl
> >Subject: 	Re: [sdiy] LFO, analog computers
> >
> >ages ago I made a strobe light with external
> >triggering which I hooked up to
> >my signal generator... I tried out strobing myself
> >with various frequencies,
> >particularly I knew there was one around 17 hz that
> >was used in an anti riot
> >device somewhere... so I headed for that.. its really
> >really spot freq, but
> >if you get it, you have to turn the light off quickly,
> >it turns your head
> >inside out!
> >Cheers,
> >Dan
> >
> > >There are also cases of eplleptic fits brought on by
> >disco strobe
> > >lights.They often seem to be around that frequency
> >too.
> > >
> > >
> > >stewart.
> > >
> > > > At 04:00 PM 14/02/01 EST, you wrote:
> > > > >In a message dated 2/14/01 1:41:26 PM Eastern
> >Standard Time,
> > >matti at devo.com
> > > > >writes:
> > > > >> 1)In trying to produce theta waves in the
> >brain, I wondered if I
> > >couldn't
> > > > >> simply
> > > > >>  set an oscillator to 4-7 Hz, instead of
> >putting one wave with some
> > > > >frequency
> > > > >>
> > > > It's easier to drive light sources.
> > > > That's how the 'meditation spectacles'(sunglasses
> >with leds built in)
> > >operate.
> > > > This technique must work,because there are
> >documented cases of
> > >epilleptic
> > > > fits produced by driving through an avenue of
> >trees giving a flickering
> > >effect.
> > > >
> > > > paul perry melbourne australia
> > > >
> > > >
> > >
> >
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> >
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