Fritzcrate Project / lusidLearn Early Demo from Michael Schieben on Vimeo.

Knobs and faders can be rigid. Fancy multitouch devices can be expensive. But for the cost of a webcam and some spare materials, you can build computer interfaces with objects around the house, thanks to the power of open source software.

In just one day, a group of artists in the CDM community, from Austria and Germany to New York to Australia, got quite a lot working with tangible interfaces. At top, Michael Schieben and Christophe Stoll experimented with using soda bottles to control software like Future Audio Workshop’s lovely Circle. (Ableton Live works, too – as does any MIDI software.) As Precious Forever, these guys are responsible for some of the best UIs in music software, from FAW to recent Native Instruments designs, so it’s lovely to see them experimenting with this idea.

As you add more people to the mix, you get ideas you might otherwise never have imagined, from a game involving blocks of the Tokyo skyline to an interface built into floor toms.

We also got a lot of real-world data on what works, what needs work, and what causes trouble for beginners, which we’ll be documenting. (Adam and Martin from the Trackmate and reacTIVision projects, respectively, were both tuned in to see progress and provided lots of help – and are also collecting that data to improve their own documentation and libraries.) More commentary on all these side benefits, as well as a discussion with visitors from Argentina on the scene around the world, at Create Digital Motion.

Musical Resources

We also got some really helpful tips for working with the free, powerful, tri-platform synthesis tool SuperCollider:
Charles Martin wrote up an easy SC test script for receiving Trackmate messages (and also had the clever idea of using a floor tom)

And for connecting Trackmate to MIDI and working with Processing, lots of tips are available on Michael Schieben’s noisepages blog:
http://fritzcrate.noisepages.com/

Get Involved

More documentation:
Tangible Interface Hackday: The Projects (So Far)
http://hackday.noisepages.com/

http://trackmate.sourceforge.net/
http://reactivision.sourceforge.net/

So, what’s next? You can join discussion and brainstorming for how to proceed, and how to get in on another hackday (formal or ongoing), even if you missed the first. Stop by the Tangible and Multi-Touch Interface group on noisepages:
Tangible + Multi-Touch noisepages Group

Our noisepages community is still in “alpha” state, but it’s usable – we’ve just fixed avatar uploading, which was the biggest problem. We’ll have more features, functionality, and improvements down the line, as well as more extensive documentation for how to get started. But if you’re a bleeding edge sort of person, join up free and give us some advice on what you’d like out of it.

I look forward to more work on these projects. Stay tuned for more, including some additional documentation (I’m developing some stuff around my own project).

Free software, a webcam, and some stickers printed on an inkjet can turn any object into a real-world controller. That’s what Paul Rose of Institut Fatima and his team did with a soccer ball (translation for the civilized world: football). The software is powered by the same framework used for the reacTable, but in this case there’s no table and no projector: just a ball.

Institut FATIMA uses a Fussball as (des-)controller for triggering drumsamples. The camera detects the symbols on the ball, kicks numbers into the sequencer, the sequencer matches goals. The goal is always music. Software used is reactivision and ableton live. Do it at home.

As it happens, reacTIVision just got a significant update, with more improvements planned. You can read up on the full details on Create Digital Motion:

Free Tangible Tracking: reacTIVision 1.4 Here, TUIO2 Coming Soon

Martin Kaltenbrunner, co-creator of the framework (and the reacTable), has some tips for working with tangible interfaces and music, and where to find more inspiration.

In addition to TUIO, reacTIVision also has an alternative MIDI mode, where you can map the appearance of fiducial symbols to note ON and OFF events, as well as their X,Y and rotation angle to a control channel value. Quite a few people have been using this for the creation of cheap web-cam based MIDI controllers.

http://www.youtube.com/results?search_query=reactivision+midi

Using TUIO, you have more alternatives though, you can currently use Max/MSP, Pure Data, Quartz Composer, Processing, Java, C++, C# and so on to receive the object & finger tracking data. Here are a few cool musical projects, that have been built using reacTIVision:

http://modin.yuri.at/tangibles/?list=7

Patrick H. Lauke (patch pictured, from Flickr) has a video on YouTube that shows some of the basic workflow for combining the free patching environment Pd with TUIO and reacTIVision. He cautions:

this may not be pleasant from a musical point of view, but it only serves as a first test for further experimentation.

Hopefully this gives folks some ammunition if you’re getting involved in the tangible interface hackday! [Project site | on CDMu]

The idea of the Reactable is to make music tangible, with control of sound mapped to physical objects you move around on a table. But that hasn’t stopped the Psychosynth from creating a virtual version. (Upside: it’s a lot more portable.)

Psychosynth

Watch the video, but they seem to have made the opening minutes as dull as possible to thin out the non-believers. Skip past the generation of the white noise oscillator (wow, white noise!), and somewhere around halfway through, it becomes laugh-out-loud funny, with trance-style vocals about freeing your mind with free software. (Seriously – it’s awesome.)

While it’s in alpha stage, the software is fully free and open source (binaries available for Debian and OpenSUSE) – and that means this could be a good project to snoop around in or code through, those of you who are eager hackers.

At its heart, it’s simply an interactive modular synth inspired by Reactable. Drag objects around and connect them to make sounds and patterns. Underneath is a powerful C++ synth library, a 3D synth, and even a server version – so even if you aren’t sold on this interface, there are pieces here that could be useful. It’s all virtual now, but that’s not to say you couldn’t add input; support for the input library is planned later.

That said, I don’t think they went far enough with the virtual thing. Next, why not simulate virtual players for the virtual Reactable inside the computer. They could even behave like Sims, requiring regular stimulation and bathroom breaks. Eventually, you could unlock Bjork.

Enjoy. If anyone gets this up and running even in alpha state, let us know.

Previously: tables and tangible, like the lovely acoustic sounds of Etiquette and, of course, Spaces / Roots

Take the modular, patchable sound-making capabilities of Reaktor and (at the other end of the scale) Reason, and combine it with a graphical, zoomable, nodal interface with patch cords showing actual signal, as on the reacTable interactive table interface, and you should get something like Mod271. (Pronounced “mode.”)

The software is in pre-pre-alpha phase, but it’s freely downloadable for Windows users if you’re adventurous, and the developer promises more progress and other operating systems soon.

Features:

• ASIO/MIDI support, VSTi version coming
  
• Everything is full audio-rate, meaning you can mix and match MIDI and DSP
  
• Powerful nodes: “every node can be automated with unlimited control points and automation takes place right in the 3D environment.” … “nodes can influence any amount of other nodes or switched into a singular state.”, with radial and linear modes for the nodes
  
• Interface is 3D hardware-accelerated, and the signals even (optionally) draw at audio rate for realistic previews
  
• sample-accurate envelopes and motion, “meaning you can make an oscillator out of an envelope.”
  
• 25 node types and growing
  
• Make your own nodes with Python

Crazy stuff! It’ll be interesting to see how this one develops. And I hope the Reaktor developers are paying close attention; there’s a lot here that could inspire a future Reaktor version.

Full description, lots of background, and that bleeding-edge super-pre-alpha-at-your-own-risk:

Mod271 @NuDSP

Thanks to Ronnie of rekkerd.org for the tip!