Feb. 13th, 2007

dsrtao: dsr as a LEGO minifig (greenface)
I am on the bus. I have the internet in my pants. (Thx, mangosteen.)

The lady at the back of the bus appears to be rolling joints and putting them in a Marlboro pack.

I woke up for a 2:30 data feed issue that I traced to a bad ssh config that had been maniacally reinstalled by a robot that wasn't even supposed to be working today. When I finally fixed everything, it was still early enough to run all the night jobs. It was also 4ish, and I couldn't get back to sleep.

I ground and brewed 8 cups of Tanzanian Peaberry, then drank it all.

I am awake and on my way to work.

It is very cold. Tomorrow we get snow, which means it should be warmer.

I am wearing the default winter coat for very tall and/or big men: an Army N3B parka. It will overheat me in about 20 seconds in an ambiemt temperature of 60F. It feels just a little warm here on the bus.
dsrtao: dsr as a LEGO minifig (greenface)
I am on the bus. I have the internet in my pants. (Thx, mangosteen.)

The lady at the back of the bus appears to be rolling joints and putting them in a Marlboro pack.

I woke up for a 2:30 data feed issue that I traced to a bad ssh config that had been maniacally reinstalled by a robot that wasn't even supposed to be working today. When I finally fixed everything, it was still early enough to run all the night jobs. It was also 4ish, and I couldn't get back to sleep.

I ground and brewed 8 cups of Tanzanian Peaberry, then drank it all.

I am awake and on my way to work.

It is very cold. Tomorrow we get snow, which means it should be warmer.

I am wearing the default winter coat for very tall and/or big men: an Army N3B parka. It will overheat me in about 20 seconds in an ambiemt temperature of 60F. It feels just a little warm here on the bus.

meandering

Feb. 13th, 2007 10:40 am
dsrtao: dsr as a LEGO minifig (Default)
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.

meandering

Feb. 13th, 2007 10:40 am
dsrtao: dsr as a LEGO minifig (Default)
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.
dsrtao: dsr as a LEGO minifig (greenface)
First self-observed sign: multitasking performance keels over like a dead thing propped up by a dishonest salescritter.

Normally I have a well-developed front-end processor that handles routine foreground issues while I'm thinking. It appears to be offline. I need to focus all my attention on things like spelling and what I was about to do next.

Going home.
dsrtao: dsr as a LEGO minifig (greenface)
First self-observed sign: multitasking performance keels over like a dead thing propped up by a dishonest salescritter.

Normally I have a well-developed front-end processor that handles routine foreground issues while I'm thinking. It appears to be offline. I need to focus all my attention on things like spelling and what I was about to do next.

Going home.
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