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why filter cut-off & resonance are so effective with psychedelics compounds
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Fragletrollet
Fragletrollet
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1748
Posted : Apr 20, 2008 01:03
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Andrew
Voice Of Cod / Zuloop
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14
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218
Posted : Apr 20, 2008 01:07
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piko_bianko
Oxya
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Posted : Apr 20, 2008 06:51
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every note of a sound is being consisted by its higher velocity frequency (which characterises the note) and some lower velocity frequencies which are called harmonics 
every filter sweep changes constantly the harmonic content which makes it interesting ?
how ?
in electronic music, when dealing with straight samples or non modulated synth sounds the harmonic contect of each note, when repeated, is exactly the same..
now, when you drop a filter sweep on a steady tone, note, pad (or anything) for -let's say- a whole second , the harmonic contect is being constantly changed which results TONS of newly created sounds every moment for our brain. that's how our brains concieve this effect.
of course, we all know that the human brain is a information addicted junkie.. so filtered sound are not attractive.. they're addictive 
  extreme |
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ocelot
ocelot
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94
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783
Posted : Apr 21, 2008 02:33
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its a sliding window on the harmonic spectrum of the sound being filtered.
as to its effectiveness- well, filter tricks alone are pretty played out.
but i would call the filter settings part of the expressive voicings.
not the main thing but another tool in the kit...
i think psychotropic substances (some of them) remove the filters on the brain in terms of hearing. we actually begin to hear what we are directly perceiving.
so much processing of sound goes on inside the brain...
it helps us start listening more.
i would say that frequency components are more important than filtration... the spectra of sound overall rather than how you achieve it. |
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vector_0
IsraTrance Full Member
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1191
Posted : Apr 21, 2008 18:00
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MARGHERITA
Master Margherita
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156
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1442
Posted : Apr 21, 2008 22:13
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intruments like
didjeridoo, shakuhachi flute, saxophone, ect...
any kind of wind instruments can produce quiet easy a second harmonic note...
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piko_bianko
Oxya
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57
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974
Posted : Apr 22, 2008 02:24
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Quote:
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On 2008-04-21 18:00, vector_0 wrote:
where can you hear filter freq cutoff in nature? The only example I'm aware of thus far is Tuvan overtone singing
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go to a waterfall
or just turn on a noisy machine...
cover your ears with your palms of your hands completely... then very slowly (or very rapidly) begin to remove them from your ears. do it in such slow movement bit to bit, and you'll hear something familiar 
***again, you can take a plastic cup, remove the bottom and place your ear in the place where the bottom used to be.. cover fully the upper side of the cup.. and do the same.. EVEN better
ps. in case you're wandering, i've tried horrible things
cheers
extreme |
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vector_0
IsraTrance Full Member
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Posted : Apr 22, 2008 02:28
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piko_bianko
Oxya
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57
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974
Posted : Apr 22, 2008 02:29
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ocelot
ocelot
Started Topics :
94
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783
Posted : Apr 25, 2008 12:25
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the cup experiment you are referring to is actually much different than a "lowpass" frequency filter
its actually produced by the delayed signal (resonating off the walls of the cup) convolved (multiplied) by the signal. (or maybe the otherway around. not sure)
this emphasizes a fixed harmonic structure that rings- you could simulate it and tune it just like moving the cup in and out away and closer to your ear...
you could put small speakers inside different resonant spaces and record them at other locations.
you can simulate this with delays...
whats interesting to note is that frequencies are a function of time... a note slowed down is perceived as a rhythm at some point. a rhythm sped up is perceived as a pitch at some point...
in any case- the effect many are speaking of is not so much a property of Filtering so to speak, but is the effect of the Resonance of that filter- the boosting of certain frequencies around a central defined frequency.
eq, filter, delay...
i would rephrase the question to "what is it about psychedelics that affects our perceptions of sound?"
"what are the parameters of our perception of sound?"
interesting tidbit-
our ears (the actual ears and canal shape) naturally boost the frequencies between roughly 600hz and 3khz. the range of the human voice needed for language intelligibility. our brain "corrects" this midrange emphasis and "flattens" the signal response.
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