Yesterday, I talked about two complaints of music developers writing applications for the iPhone. These come from developers who are really iPhone fans, who just want to get their software released and (for many music devs) better categorized on Apple’s store. Pajamahouse Studios, maker of the new Sonorasaurus remix application, follow up with a more detailed explanation of their situation.

These are not rejections; at least rejections are generally accompanied with some sort of suggestion of what would need to be changed. They represent the dreaded iPhone developer “limbo,” in which an application is neither rejected nor approved. For Sonorasaurus, that’s been the state of affairs for over two months. As the developers explain, there seems to be nothing unusual about their app:

• Library access: It doesn’t access the iPhone/iPod music library. (no application is allowed to do that, which incidentally limits a lot of the DJ app possibilities of the device) Clarification: The status of the music API itself is unclear; some developers report just this sort of approval delay when trying to use it. [Source] Also, access to files inside the media library is not directly possible, which can be compared to the status of Android.
• File access: A separate http server is provided, with a parallel library, for users to store their own tracks – again, something found on numerous other approved applications. This doesn’t use the included library.
• Included music / music distribution: Five included songs are for testing only – something found in a number of other, similar applications that have been approved. The application is not an alternative to iTunes for distribution.
• Media decoding: Custom MP3 decoding technology – something not provided on the iPhone – was separately licensed. Clarification: This was not meant to imply that you can’t do MP3 decoding; the developers meant to make the point that they were not violating patents or licensing by using their own decoding, which presumably they did for the purposes of building a DJ app.

Of course, whatever the reason, we’ve seen in past applications suddenly approved after weeks or months, so who knows what will actually happen with this app.

Read the full explanation:

In Limbo Pt. 1 [Sonorasaurus]

While reading that, though, I also have to observe how significant these workarounds are. Without launching into an Android versus iPhone debate – believe me, there are many, many things to criticize about the Android as a platform, especially relative to music –  none of these is an issue on the Android. Forget platform wars or fanboys. Alternatives are good. I’d hope that we do have more than one approach to how to do this. These approaches should have to compete with one another, as they offer different tradeoffs and advantages.

If music is becoming an application, this kind of freedom is important.

Part of the beauty of the iPhone from its launch date was the notion of a Mac you could fit in the palm of your hand. That makes it ironic that, for so many developers, mobile platforms in general have turned into a way to fragment software, to make it run fewer places instead of more. There’s something to be said for designing to a specific mobile device, but on the other hand, how many developers would want to restrict where their creations run? And particularly in music, isn’t the appeal of mobile creation the ability to have your tools work in more places? Maybe targeting just one gadget is the right choice for a given tool, but it shouldn’t be the only choice.

On the iPhone, the application Thump has plenty in common with a range of mobile music making tools. It’s simple but fun, a groove box with sequencing, subtractive synths, drums, and a set of basic effects, plus the ability to load your own samples and export songs.

Thump also demonstrates how simplifying sonic capabilities can produce musically-beautiful results, by focusing on the essentials and creating something with personality. Here’s a track by its creator showing off its sounds:
thump soundreel by mazbox

Well worth checking out the app on your platform of choice:
http://www.mrkbrz.com/thump/

What might not be immediately apparent is that under the hood, Thump makes use of the open source environment openFrameworks. As a result, the same code runs on iPhone, Mac, and Windows, as well as Linux. (It’s not distributed for Linux, but it could be. Hint, hint.) Creator Marek Bereza gives back, too – he ported the openFrameworks audio library to the iPhone, where it’s available to anyone.

Updated Marek notes in comments just what this means. The video below is, essentially, the same app. In place of the iPod screen, he has used a massive lattice of physical controls. A separate installation at the same show used a large touchscreen and simplified interface. And this really demonstrates what cross-platform means. Guy Kawasaki in the 80s mocked “ports” as a cheap wine. The idea is not to simply dump your code on a different platform and hope for the best – in fact, in this case, the changes from one platform to another were radical. The key is maximizing what’s essential, what really is not specific to a single device.

Physical Sequencer from Marek Bereza on Vimeo.

Creative Applications has a detailed write-up of the installation with more documentation.

If you’re interested in creating your own projects, oF has an elegant syntax based on Processing, but adapted to C/C++ coding paradigms and libraries.

LaDiDa Demo from khush on Vimeo.

There’s no question iPhone/iPod touch development – really, just clever mobile development – has gotten a bit overhyped lately. But that’s all the more reason to do a round-up of genuinely interesting stories, real innovation happening on the platform. So, I’m clearing out my inbox with some of the more creative tools appearing recently on Apple’s mobile gadgets. There’s no better way to kick off today’s festivities than with this unusual “reverse karaoke” creation.

Sure, people may think they’re tone-deaf. But even the layperson has extraordinary powers of musical perception. So how could you train your iPhone to perceive and respond to music? That’s the question asked by LaDiDa for iPhone, the first of a new line of “intelligent” music applications for mobile devices. A “reverse karaoke” tool, the idea is to listen to singing and fake accompaniment, rather than having you sing along to canned backing tracks. Nothing is pre-programmed; everything is generated on the fly on the device.

It’ll even make up a Bollywood accompaniment to your singing:

LaDiDa Bollywood Duet from khush on Vimeo.

Of course, to me, it’s interesting not only what the iPhone is able to musically, but also what these algorithms are unable to make sound musical. Both reveal a whole lot about how we hear and conceptualize music. I think the team deserves real credit for making this fun, though, and on constrained hardware.

The app’s creator Khush follows in the footsteps of Smule in that it takes hard-core academic music research and uses mobile devices as a vessel for getting that tech in the hands (literally) of the general public. (See my interview with Smule founder and ChucK originator Dr. Ge Wang.)

Parag Chordia, developed at professor at the Georgia Institute of Technology and the gentleman you see in the video, spoke to CDM about what’s happening behind the scenes. He tells us about how this application was developed, and how the intelligent algorithms work (or at least try to work, as music analysis and auto-accompaniment remain at early stages).

First, an explanation of the app.

The creators of Fruity Loops aka FL Studio (Image Line software) have just announced a new DJ application called DeckaDance, and this thing looks like the answers to our prayers. We here at CDM love applications that don’t tie you into a specific controller/hardware/control vinyl solution. DeckaDance seems to have everything we’ve ever wanted in a DJ application, and not only does it support several different types of control vinyl, it actually has a learn mode to adapt itself to new types! Add the fact that it’s a VST host capable of hosting both effects AND instruments, and is capable of operating as a VST plugin as well, and I think we have something that will truly change the face of DJing (unlike some other recent products). Here’s a run-down of some of the more notable features:

1. Works as standalone or VSTi plugin
2. Hosts VSTi soft synths & FX in 8 slots
3. 8-slot sampler that samples from the decks
4. 6 inputs & 12 outputs
5. Supports Final Scratch, Serato Scratch, MixVibes and (our favorite) Ms Pinky vinyl
6. Capable of learning new vinyl control systems
7. Auto-sync