Sonar Boy  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 13, 2011, 11:59:27 pm
content: no idea if this is real

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 14, 2011, 01:18:11 pm
content: another examplehttp://news.bbc.co.uk/1/hi/england/hampshire/8291720.stma finding a little hard to believeno way is that kid noticing such small differencesafter all the ear dose do signal processingSignal processingSound processing of the human auditory system is performed in so-called critical bands. The hearing range is segmented into 24 critical bands, each with a width of 1 Bark or 100 Mel. For a directional analysis the signals inside the critical band are analyzed together.The auditory system can extract the sound of a desired sound source out of interfering noise. So the auditory system can concentrate on only one speaker if other speakers are also talking (the cocktail party effect). With the help of the cocktail party effect sound from interfering directions is perceived attenuated compared to the sound from the desired direction. The auditory system can increase the signal-to-noise ratio by up to 15 dB, which means that interfering sound is perceived to be attenuated to half (or less) of its actual loudness.any thoughts ?i mean what a party trick if it is possible

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 14, 2011, 01:34:38 pm
content: i kind to have thought of this long time ago. surely we all know about braille book right? anybody with perfect eye can read braille? (i mean read with hand, not eye). imo, if we lose one sense, our concentration on another will gain higher (such as skin sense, ear etc) once i was in a lift with braille button (in hospital iirc), i tried to close my eyes and touch it to figure out the shape, i just cant. i always tend to open and see it with my eyes. there is a quote from a movie... "your eyes can fool you" but your brain cant.

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 14, 2011, 03:01:28 pm
content: its a timing issue for me i don't see how human could detect these small differences at the volume of his click, come to think of it he dose direct it either ummm now i am more confused.

author: BrickBoiler
author_rank: Contributor
timestamp: April 14, 2011, 03:33:25 pm
content: There is a blind guy in the town where I grew up that could supposedly do this by whistling. I remember trying to do it myself as a kid. I went to the school playground, closed my eyes, and spun around until I didn't know what direction I was facing. Clicks and whistles didn't work for me but a sharp clap and I could tell what direction the school itself was. It had a large flat brick wall which was perfect for this. Eventually I figured out I could sort of do it with anything big enough and flat enough.

author: Simon
author_rank: Unknown
timestamp: April 14, 2011, 05:01:52 pm
content: Quote from: Sionyn on April 14, 2011, 03:01:28 pmyea and i didn't see him clicking that much, like when riding a bike ? I call fake. we can do remarkable things but this is pushing it a bit

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 14, 2011, 07:20:28 pm
content: the only solution on how exactly how. is to pull your eyes out of its socket and wait for a year or so.