It’s music production. It’s … lasers. If you’re in the LA area, you’ll want to be there. If not, let us know in comments what you most want to see covered / interviewed / videoed for CDM.

DubSpot’s Live 8 Sessions Tour heads to Los Angeles this weekend, for a set of workshops, performances, and demos on Hollywood Boulevard. I’ll be out with the crew, and hosting with DubSpot a special interactive performance lounge Sunday night.

Sunday night will feature generative audiovisual art made on iPhones, and laser-powered, open-source gestural controllers and a laser installation that responds to motion and sound, plus Christopher Willits, Kid Beyond, Irwin, myself, and a lot more.

The weekend workshops: The artist lineup includes legends from a number of genres, including Scientist, Kid Beyond, Daedelus, Justin Boreta (Glitch Mob), Thavius Beck, and Christopher Willits. Other names you may not know have their own resume in sound design and performance (Irwin), producing and education (Steve Nalepa), mastering technique (Daniel Wyatt), and business (Barry Cole). Sunday, monome virtuoso Daedelus and I will talk about controllers, performance, and sampling technique, I hope going well beyond Live to design and playing technique in general. Passes are $110 for one day, or $195 for the weekend. Watch for a similar series in Austin, Texas this month, and other cities TBD, or for everyone else, stay tuned to CDM and DubSpot.

Digital technology has transformed the listening experience. But there’s little in the way of physical artifacts of that act, and a diminished sense of humanized relationships to an individual being at the other end. From modern radio to Internet-streamed playlists, our listening world is DJed by automated robots in streams that flow through generic, mass-market speakers. The object and the content lack the design intention that imbued, for instance, the gorgeous radio sets of the early 20th Century and the personalities that narrated the programming.

Armed with a lasercutter, designer Matt Brown has a novel concept for how to redesign the act of listening. From the creator’s blog Real Tomato:

Imagine drawing an interface on paper, then being able to use it as a musical interface. Or, heck, don’t imagine it – do it. Unfortunately, the kinds of intelligence necessary to make the music video in yesterday’s post just aren’t practical yet. (That is, you could draw a picture of a keyboard, and even use the picture as a music controller, but while you or I could recognize a keyboard from a drum pad and know that line is a fader, a computer would need some sort of advance structure for any recognition to work.) But you can do some really clever things, as folks have shared in comments.

And using some basic paper interfaces, you can make entire instruments for just a few dollars.

Of course, the awesomest way to do anything is with LAZORS. Greg Kellum and Alain Crevoisier presented a paper at last year’s NIME (a conference for new interface designs for music) proposing a system for making any surface a control surface. Like the music video yesterday, you can configure your surface to function however you like – even dividing it up into pads and faders.

By now, you’e likely seen plenty of multi-touch interfaces or means of tracking hands. But, to paraphrase the NIME paper, these either require a special surface (or transparent surface), or they can’t actually detect when you’re touching. You can even use multiple cameras or an IR beam, but there are limitations to accuracy and the size of the usable surface that would result. Kellum and Crevoisier use an infrared camera and two illuminators, each built by pointing a laser at a mirrors.

Yawn, you say, been there, done that, seen Jeff Han’s video… The advantage of this system is that you can use any surface, like your dining room table. And you can configure that surface however you like. There’s even a freely-downloadable Surface Editor you can extend in Java and Processing. The creators claim they can even get input latency down to a reasonable 10 ms using high-speed cameras.

Transforming Ordinary Surfaces into Multi-touch Controllers [PDF paper, NIME 2008]
Future Instruments > Projects
Thanks, Randy Jones!

db3ll has created a keyboard out of paper, and of course it works better than those flimsy rubber “roll-up” pianos you see for sale. “Conductive ink is what I used,” he says, “painted on as traces on the non-printed side of the paper.” That’s the twist – I had assumed you’d use the top of the paper, but the trick is to use the reverse side to provide the “wiring.” He also offers advice for making a fader:

AR scratching from vanderlin on Vimeo.

“Augmented Reality” is a fancy term for describing ways of using computer vision to overlay digital intelligence on images. In other words, you can, for instance, scratch a vinyl record using a camera – plus a tag for identifying the object’s position in 3D space.

Cambridge-based designer Todd Vanderlin put together an elegant demonstration of the possibilities here, and his video has accordingly been making the rounds. (See: Synthtopia – and I actually heard about it this morning from a high school friend. The power of the Internet.)

Todd has more details on his site, which includes all kind of wonderful projects, like laser sound fountains and, always favorite around here, creepy circuit-bent baby dolls.

AR Scratching [Todd Vanderlin]

There’s actually some work to this: you need to figure out how the album is spinning. And of course, because this is augmented reality and not reality, there’s real potential here to imagine a new kind of vinyl DJing in which normal physics don’t apply.

From the video description:

I was playing around with some AR markers the other day and came up with this idea. taking just a plain old vinyl record and attaching an AR marker to the label you can track the record in 3D space. The next question was, can you scratch the record?

So by figuring out the velocity of the records rotation and applying it to the payback of the audio you can scratch. There is some digital noise that needs to bee worked out, but sounds pretty good. Its still really hard to scratch, it takes some practice but is super fun. The next step is to figure out some nice triggers for different modes. I like the idea of not needing a turntable but the actual spinning of the record helps with the scratching and playback. I made a couple modes, one where the record is paused and you can just scratch through the song. The other looks for zero velocity for x time and then continues on with the song. If there is velocity you then are scratching and the audio is affected. I think that this project has some legs can’t wait to play more.

I Want My Augmented Reality TV

So, this has sufficiently inspired you and you want more augmented reality? We’ve got more for you.

Mixed Up – Beat Blender and Mixmaster 1200 from Matti Niinimäki on Vimeo.

Matti Niinimäki is back DJing with flea market, broken appliances as physical interfaces – and the whole project is getting better and better. We saw an early prototype of the Beat Blender, a re-purposed Osterizer with fake fuzzy fruit that stand in for loops. Now, Matt has added a handheld mixer for scratching.

The Mixmaster 1200 is a wireless scratching device for the turntablist who prefers to deliver his/her scratches like a 5 star chef. As you can see, the Mixmaster does not have any beaters attached to it. This is because it has small laser powered plasma emitter beaters that actually heat up the airwaves around the device itself producing the unique sounding aural explosions.

Motion – Mixed Up (2009) [originalhamsters]

I recently got to see a Numark NS7 in the flesh, the controller that company hopes will be the last word in DJing. It’s got nothing on this.

I’ve got to hook something up to my Breville… maybe temperature sensors.

Matt may have beat you to this idea, but I guarantee, if you’ve been thinking about alternative controllers, you will never see a flea market in the same way again.