meandering

Feb. 13th, 2007 10:40 am
dsrtao: dsr as a LEGO minifig (Default)
[personal profile] dsrtao
I wonder what the bandwidht of the sense of touch is.

Back-of-the-envelope estimate:

Update rate of 100Hz is probably adequate.
Sampling depth: 8 bits of pressure, 8 bits of temperature, 8 bits of pain.
Resolution: the highest is on the fingertips, tongue, face. Let's say that 600dpi will work on those regions, and most of the body is content with 50dpi. Let's say, 50 square inches of high-res, and 3000 of low-res.

rate * depth * resolution = 6x10^12 bits/second. That looks like a good upper bound for full-body tactile sensory transmission. I bet a simple redundancy compressor could take a big chunk of that, and a perceptual coder is probably reasonably easy.

(no subject)

Date: 2007-02-15 07:37 pm (UTC)
ext_104661: (Default)
From: [identity profile] alexx-kay.livejournal.com
I recently saw an article in New Scientist which claimed "a realistic touch interface must ideally be able to change 500 times per second or more." No idea whether this claim is backed by real data or not, but thought the article might be of interest.
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