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Old 26th October 2010, 01:46 AM   #1
boris81 is offline boris81  United States
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Default audio reproduction in a nutshell

YouTube - Floating Cube in Center

the brain can be fooled to perceive a depth dimension.
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Old 26th October 2010, 04:18 AM   #2
jlsem is offline jlsem  United States
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But with knowing the nature of the illusion and with practice and concentration, the brain is no longer fooled. So, close but no cigar.

John
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Old 26th October 2010, 04:25 AM   #3
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But with knowing the nature of the illusion and with practice and concentration, the brain is no longer fooled.
But you first have to know it's an illusion.

Are you claiming to be prescient?

se
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Old 26th October 2010, 06:01 AM   #4
nac134 is offline nac134  Canada
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There are illusions that you cannot be trained to see. Different versions of the muller lyer illusion for example, or almost any illusion that challenges color perception against shadows.
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Old 26th October 2010, 04:21 PM   #5
jlsem is offline jlsem  United States
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But you first have to know it's an illusion.

Are you claiming to be prescient?

se
I know it's an illusion because little presents don't float in mid-air. Once the nature of the illusion is exposed, one has to work at re-adjusting one's perception to see the thing as what it is supposed to represent.

John
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Old 26th October 2010, 05:26 PM   #6
Cassiel is offline Cassiel  Libya
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with practice and concentration
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one has to work at re-adjusting one's perception to see the thing as what it is supposed to represent.
Hey, why go through all that trouble? Illusions are there to be enjoyed, enjoy your ride.
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Old 26th October 2010, 07:29 PM   #7
jlsem is offline jlsem  United States
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Don't get me wrong - I love illusions. Those kind are even more fascinating in the flesh. I just don't think it is relevant to audio reproduction.

John
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Old 26th October 2010, 09:22 PM   #8
benb is offline benb  United States
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Don't get me wrong - I love illusions. Those kind are even more fascinating in the flesh. I just don't think it is relevant to audio reproduction.

John
I do see a bit of relevance - good audio system will give the aural "illusion" that the singers and instruments are in the room with you.

But clearly, there's a lot of difference between visual and aural illusions, and research in one is inapplicable to the other.
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Old 26th October 2010, 10:39 PM   #9
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Maybe closer than you think...hearing and sight both use the differential input between a pair of receptors to decode information about the perceptual scene. In the optical illusion the brain decodes the slightly different scenes from two eyes to construct an apparently solid cube floating in air. In audio reproduction the brain decodes the differences in arrival time, loudness and timbre from two ears to construct an apparently structured soundstage of performers arrayed side to side and fore & aft in the listening room. The common element is, of course, the brain...where signals from the receptors get magically transformed into the (not always 100% correct) construct of the perception of reality.
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Old 26th October 2010, 10:57 PM   #10
boris81 is offline boris81  United States
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I know it's an illusion because little presents don't float in mid-air. Once the nature of the illusion is exposed, one has to work at re-adjusting one's perception to see the thing as what it is supposed to represent.
John
you are arriving to a conclusion based on previous knowledge. there's the famous story of people fleeing the movie theater when they saw a projection of an incoming train. you hear the illusion because you see the speakers.

suppose there was a curtain between you and a pair of speakers that were playing a violin recording. can you tell whether the sound is coming from speakers or if there is actually a violinist behind the curtain?
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