140 / curtis + thumb piano from m~fischer on Vimeo.

Synthesis geeks are creating some fun sonic toys for the iPhone. There’s no reason you couldn’t plug in an iPod touch or your phone into a mixer and use them in live or studio creations for a little variety. And as mobile platforms grow in capabilities, other platforms should be close behind. (Not to mention, you can always rescue an entire iPod or PDA and run Pd, often for just the few dollars an app costs!)

At top, the granular sampling app Curtis captures sound from a thumb piano. Curtis costs justs a dollar, but allows you to sample, then visually manipulate recorded sound, using granular techniques. A “smooth” synthesis engine is upcoming, but I rather like the lo-fi sound — hope you’ll allow us to switch engines with a toggle. As seen at Synthtopia.

the strange agency [makers of Curtis, other apps]

The app is named for Curtis Roads, who did much of the seminal research into making granular techniques a technical reality. See his book Microsound
for an excellent overview of compositional, historical, acoustical, theoretical, musical, and, well, every possible aspect of this influential sonic practice. Have a look at the documentary on Roads and granular music we saw last month.

Segue – one early practitioner of granular music was Iannis Xenakis!

iGendyn is a new, free mobile application built around the GENeral DYNamic stochastic synthesis approach of Xenakis: “Imagine a set of control points (CPs) which together define the shape of a time domain waveform; with each new cycle through this waveform, their relative positions are updated using probabilistic distributions.” And yes, that’s GENDYN as in General Dynamic – not, in fact, a character from The Lord of the Rings.

Got that? In the default algorithm, X is amplitude, Y determines how quickly you scan through control points to produce the sound, and tilt changes probability. In other words, whether you understand the underlying approach or not (and hearing is always better, anyway), you can tilt your iPhone around and explore networks of probabilistic sounds.

iGendyn Homepage
iTunes App Store Link

Author Dr. Nick Collins is co-editor of The SuperCollider Book, upcoming from MIT Press, as well as The Cambridge Companion to Electronic Music. Thanks to Raub Roy for the tip!

Meanwhile, mother of all synth-geeky iPhone apps finally got its 1.1 update approved, so have a go with Jasuto 1.1 for a really terrific look at what modular synthesis could be. Jasuto also has a desktop VST version and the two will be able to integrate, so you have lots of possibilities here.

That sounds like the usual collection of meaningless YouTube buzzwords, but yet again, in the spirit of the YouTube-fueled musical genius of Kutiman and, more recently, Tan Dun and Internet orchestras, the combination of user-contributed videos turns out to be magical. Perhaps “You” are a star, after all.

In Bb also gives You, the viewer, some powers over the remix. As the name implies, everything will blend, so you can start the videos as you wish, and control volume with the volume sliders. It’s part of the ongoing evidence that sometimes simple ideas can be deeply musical and effective.

Now, you weren’t expecting to get any more work done on this Friday afternoon / evening / Saturday morning (depending on where you live), were you?

The Roland JUNO-G has attracted some interest from CDM readers since I mentioned Roland’s YouTube contest and talked a bit about the JUNO line’s history. (See previous story.)

One of you by the name of “made” even asked comments addressed “Dear Roland.” I had to admit I was curious about those answers, so Roland responded.

The JUNO-G feature a lot of readers wondered about was the onboard sampling functionality. That feature was beefed up in the OS 2.0. Personally, I’m still looking to keep my samples on the software side, but I can see this having some appeal for live performance. With 2.0, you can sample onboard, which could make the JUNO-G an interesting “live-PA”-style synth, a hardware unit with some sample savvy, and/or a way to supplement your laptop in gigs.

New 2.0 features as described by Roland:

• Sample audio from external sources or import audio phrases from the removable flash memory.
• Samples can be assigned to trigger from the JUNO-G’s function buttons or the JUNO-G’s keyboard.
• Velocity and note number can be assigned individually for each sample.
• Adjust Start, End and Loop points using the JUNO-G’s front panel control knobs.
• Advanced sampling editing such as Truncate, Normalize, Emphases, Sample Chop and Combine are included.
• Samples can automatically match BPM in real-time to changes made to the tempo of your song.

To download JUNO-G Version 2.0 software upgrade, please visit:
http://www.rolandus.com/products/productdetails.aspx?dsection=d_downloads&ObjectId=756

Now, onto the tips, which come from Roland’s Eric Klein.

If you hate modern samplers with all their supposed fidelity, longing instead for the glitchy digital distortion of samplers past, a DIY project has brought you the sounds you love. “Where’s the Party At?” has been inspiring tingly sensations in digital lovers since I first wrote about it in September.

Now, the kit version is shipping. It’s a unique-looking combination of reliability and sonic unreliability, good open source design engineering and, as the creator puts it, a certain “crustiness.”

Apocryphal Feature List and General Horn-Tooting:

• 8-bit max sample depth, 1-bit minimum.
• 20kHz (or so, user adjustable) max sample rate, no minimum.
• 512k SRAM, about 26 seconds (minimum) or sample time.
• Big, versatile 6 button, 7 knob, 8 LED user interface. For Cavemen.
• Even more big and versatile full MIDI control in and out capability. Fully sequenceable. For people who use Live and general bespectacled electronic music nerds.
• Sample banking — multi-timbral recording, playback and audio processing across all banks.
• Sample multiplication, XOR, ABS, and all sorts of other weird sample processing and cross-modulation.
• Real time overdubbing.
• Preferences saved in permanent memory.
• Hackable analog clock source which can be syncronized to other synths.
• Non-Hackable crystal clock source which will always do Exactly What You Tell it.
• Programmable clock jitter, bit rate reduction, aliasing, and sample clock errors all adjustable in real time.
• All the normal backwards masking and half time and typical sampling features common to many commercial samplers.
• On-The-Fly Granular reconstruction of samples.
• Full pitch control of samples.
• Self test mode for debugging.
• 2.8Hz-357kHz frequency response (measured).
• Sub-audible noise floor.
• Looks nerdy and attracts people with stringy hair. Possibly bad skin.

Details on this kit, plus a video sampler version made for a specific party here in NYC, at creator Todd Bailey’s site:

http://narrat1ve.com/

Updated: Complete information on the kit itself, at US$75 – Some Assembly Required (read: you’d better have a soldering iron handy and know how to use it!)

Where’s the Party At, Hardware Version 1.01

I also love the bag of shiny hardware for aiding in making yours nice!

Mac users luck out when it comes to managing audio files, with exceptional choices like Snapper from AudioEase and the all-powerful AudioFinder, not to mention – if your needs are light – features like Leopard’s QuickLook. Windows users, by contrast, have been mostly left out. But good news: we’ve got a lovely solution for you.

TaggedFrog is a free/donationware utility for Windows XP and Vista that brings some powerful file management facilities. And what’s great here is that it looks dead-simple to use.

Lunar Frog TaggedFrog [Publisher Site, Free Download]

As the name implies, the tool is built around tagging files. Drag and drop files to the iTunes-style Library, then tag them with identifying keywords. That’s it: now the files you need just show up automagically, and you can navigate them by tag. You can also tag directly from a context menu in the Windows Explorer file manager, and if there is keyword metadata in the file itself, TaggedFrog can import those keywords. (For tips on cleaning up that menu, see my previous how-to piece below.)

That’s all nice, but the one essential feature that had been missing is audio file preview. You can thank our friend Brad of Brad Sucks for nagging the developer until it got added: