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Post by OTL - the9thtentacle on May 2, 2013 1:13:25 GMT -8
en.wikipedia.org/wiki/Holographyi wonder if there is some way of using sonic equivalents of diffraction and interference to project holographic images into audio... 
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Post by yiannis on May 2, 2013 1:31:08 GMT -8
Wouldn't that be something like surround sound? I hope one day all albums will be recorded with surround sound, there's so much scope for experimentation on that field, especially with electronic music.
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Post by Music247 on May 2, 2013 4:22:10 GMT -8
You would not see images in audio without a medium that could be manipulated. The only thing I have encountered anywhere near this is following these lines. I am not sure if the manifestation of shri yantra on tonoscope is complete b*llox or not though because I have never seen it in real life or with video evidence.. look up Tonoscopes. I also recall some 3d images related to vibrosopy but they were wavelike, but cannot find anything on it right now... Here is the "supposed" shri yantra on a tonoscope though without seeing it manifest it could have easily been created by hand.   In practice but sadly not quite the shri yantra:  |
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Post by OTL - the9thtentacle on May 3, 2013 6:18:27 GMT -8
if you did that in a rotation-free vacuum then maybe it would look exactly the same..., my query however is more about having some control over what goes into the hologram though, rather than just finding the vibrational pattern in a 2D slice of the soundwave - this great image you have shared reminds me of how smoke looks in a beam of sunlight...
the sound itself is the projection medium (or the surface of your mind's binaural ear, if you prefer)
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Post by Music247 on May 4, 2013 12:28:03 GMT -8
Unless you have a higher grip of science than myself and literally "blinded" me it could be mistaken for mumbo jumbo. I am all up for some mysterious but I could not visualize what you were trying to convey in my minds eye.
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Post by OTL - the9thtentacle on May 17, 2013 8:45:02 GMT -8
oh sorry - i must have failed to communicate what i meant there...
i don't have much science, but wikipedia does and can look up most things - visual holograms are made of the difference between a laser and the shadows made by shining a phase shifted copy of the same laser onto the object you want in your hologram. using mirrors at 45 degrees you can get your light to go two ways and end up on the familiar silvery paper behind the object. I was just wondering if there were some way of using sound as the laser, some kind of easter-egg as the object, and the listener's mind's-eye as the familiar silvery paper.
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Post by damien on May 17, 2013 9:40:04 GMT -8
This topic seems like a complex but interesting one. All I can add at this stage is I am working my way through a book called 'musicophillia.' It talks about auditory hallucinations.
The description of these is hearing something which doesn't exist. there is a part of the ear called cochlea that perhaps absorbs the vibrations that are sent to the brain. I believe Alexander Shulgin has documented and created ? psychotropic drugs which effect only auditory senses.
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Post by Music247 on May 19, 2013 12:55:19 GMT -8
Play 2 pure tones together and you can often hear another tone that does not actually exist. Not sure it can be classed as a hallucination as opposed to a secondary function of the ear / brain. en.wikipedia.org/wiki/Combination_tone |
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Post by OTL - the9thtentacle on Jul 2, 2013 12:42:16 GMT -8
yes - two continuous tones together do produce a third discrete one - i believe that this is the difference between the two? i'm not sure how much this can be used in changing music though, also - given a particular bunch of sound, what would you need to play along with each part to give not so much extra notes as deliberate seeming 'tones of voice' and phonemes...? the mind continues to boggle::;;:;
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