Well, I recieved a couple samples of possible compliant surface silicone sheets. Unfrotunatley after some testing, I’ve found they won’t work for FTIR use.The first is from www.rubbercal.com. The durometer (hardness) of the sample is just too high (probably around 70) and therefore doesn’t stick to the acrylic at all. The other sample I recieved is from Rubber House on ebay. This sample is just too thick (1/16″), although it may be a great alternative if the supplier ever gets 1/32″ or thinner sheets in stock.
Since these samples did not …

After spending a large amount of time focusing on Diffused Illumination ( Rear DI), I’ve switched my concentration back to FTIR. I had great results with DI and was happy with the ease of use and setup, but one issue I had was the constant calibration I would have to go through every time I tested. This most likely had to do with an incomplete setup and open box where the IR light, shinning at the acrylic, would easily change as the environment changed. Although with some fixing it is …

FTIR and DI are the two main technologies used in NUIGroup (I will be posting information on alternative techniques at another time):
FTIR = Frustrated Total Internal Reflection (a phenomenon) – This is currently the most popular method, possibly due to the wide internet distribution of Jeff Han’s videos. IR light is shined into the side of an acrylic panel (most often by shinning IR LEDs on the sides of the acrylic). This light is trapped inside the acrylic by internal reflection. When a finger touches the acrylic surface this light …

The following is the initial budget for this project. Like most projects, the budget will often change or expand beyond what was originally intended. As developments change or new items are purchased, I will update the budget to reflect any changes made.

HARDWARE

Amount

Item

Cost

Own

1

1/2″ Wood Hardboard 4′ x 8′

$20

X

4

Wood Legs

$15

2

1/4″ Sintra or Komatex Foam Sheet 4′ x 8′

$70 – $120

1

Acrylic Sheet 24″ x 36″

$43.91

X

~50

Infrared LED

$36.53

X

1

Unibrain Fire-I Camera

$22.20

X

1

Infrared Camera Lens

$19.33

X

1

Silicone Rubber Sheet 24″ x 36″ (FTIR only)

$33 – …

My aim is to create a clean and simple table design. I don’t want the table aesthetics to outweigh or detract from the musical interface and interaction. I did a quick sketch of my initial Aesthetic thoughts using Google SketUp. I will include pictures of the actual progress and SketchUp files once the building process begins. The following design is not set in stone, but will be the basis as I start the building.

This is the initial timeline for the AudioTouch project. As I make progress, it is possible that things may move away from the timeline, but I will be doing my best to keep things as close to the timeline as possible. Since this project requires two main parts, hardware and software, I will be starting with the hardware end since this is what needs to be stable in order to develop working software. I started designing a proof-of-concept musical application already, but will rewrite it in time for week 5. …

My mission is to design a Multi-user, Multi-touch environment that allows individuals to work together within a musical space. A Multi-user table designed for Multi-touch interaction will be the point of collaboration. A Natural User Interface will act as the visual feedback where users can directly manipulate what is projected on screen. Within the design, a musical framework will be programmed that will make use of the table’s Multi-Input (Touch) ability.
While Multi-touch technologies have existed since the 1980s, not until recently have computer …