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Re: Loopy2 Mini Review..

Charles thanks that helps.  I have looked at it and wondered though as you put it 'hijack the mic input' is dealing with the impedance factor but apparantly resolving well.  My own iTouch which is 2nd gen has some corrossion or static build up that occasionally rears it's head with a thumbtack mic.  I've wondered if using the line adapter if it would get above that but probably might still affect.  I'm pretty wed to Mobius right now but have been thinking about the i<world> as an option for either a controller and/or recording/looping poss.  Re the controller Jeff has built OSC ability in to the newer release.  Sidebar sorry but thanks re the input on the 'input' (grins), it's incouraging re what all is going on with this stuff.

On Mon, Jun 27, 2011 at 5:43 PM, Charles Zwicky <cazwicky@earthlink.net> wrote:

  The iRig is fine, it is clean, and provides a high input impedance so the guitar tone isn't compromised.  It's no better or worse than any other "hijack the mic input" device.  I  have compared several and despite various claims about "feedback immunity", level and noise,   they all measured about the same.  Self noise is high on the mic input, but they all sound fine.

I had the Apogee "Jam" which was considerably quieter, but the only app that recognized it was the Peterson strobe tuner, so I sold it and bought the iRig.


Charles thanks for a detailed analysis of this.  How is the iRig btw?  Is it stable and clean or moderately clean?
Thx  Jim
On Mon, Jun 27, 2011 at 4:04 PM, Charles Zwicky <cazwicky@earthlink.net> wrote:

Loopy 2 mini-review

After spending a bit more time with the Loopy2 app on my iPod touch 4th generation I find that there are some features that put it above the rest of the available iOS loopers in terms of the "Looping as an instrument" world is concerned.

I've highlighted them here:

6 simultaneous overdub-capable loops that can each be different lengths...!

After recording your initial loop, you can use the multiply and divide icons at the bottom of the screen to make the length of any subsequent loop to be an even multiple (or fraction) of the first recorded loop.   By using the Plus and Minus icons, any subsequent loop's length can be set to any arbitrary number of beats longer or shorter than the original loop.  This feature is unique to the Loopy2 as far as I know.  By setting each of the loops to a different number of beats you can easily create complex polyrhythms,  and for creating long undulating ambient backgrounds is the next best thing to completely unsynched loops.

There is an option in the settings menu that allows you to enable or disable "count-in" while recording or overdubbing. This is a very important feature, it allows you to arm a track and have time to get your hands back on your instrument  before it goes into record.

Global menus and individual submenus...

Each of the 6 loops has a built in sub-menu, called up by holding your finger down on a loop,  allowing you to adjust the Volume level, Pan position, as well as import and export audio to an from each loop in your session. This is a brilliant use of the limited real estate of the iPod / iPhone, plus it streamlines the GUI so than non-essential functions are hidden until needed.


This is one of the most exciting features for me. Tracks may be positioned within the stereo soundfield and pan positions may be preset for the empty loops.   The big news here is that when merging two tracks (by simply dragging on onto another) the resulting "merged" track retains the stereo placement and level of the two original source tracks, and you now have one stereo track where you previously had two mono tracks. The length of the merged track is automatically set to the common multiple of the two source tracks, so any polyrhythms will be retained.

Performance recording

A "session" is defined as the six loops and their settings. Sessions may be saved and recalled, or even duplicated at will, and there is also the ability to make a stereo recording of the 6 loops along with your performance over the top of them and save this to the "recordings" folder.


I've tested several iOS apps for latency  using the iRig interface (which uses the mic input of the idevice via the 4th connector on the headphone jack.

and the Loopy 2 has a reasonable, but not exceptional, latency measurement of 930 samples (21ms).   It's not much of a problem in actual use except for highly precise rhythmic playing.

Here's how it stacks up to other iOS apps:

Pass through Latency measured at 44.1k sample rate, iPod Touch 4th gen, iOS 4.3.3

Everyday Looper 1244 samples (28.2ms)

Loopy2 930 samples (21ms)

Amplitube Fender Free, normal latency mode 736 samples (16.69ms)

TC Helicon Voice Jam 730 samples (16.5ms)

Amplitube Fender Free low latency mode 490 samples (11.11ms)

-Chuck Zwicky





From Brooklyn To Glindran, a new World/Free Jazz recording by Jim Goodin & Peter Thörn.  Proceeds
from the sale of this CD will benefit JDRF International.  jimgoodinpeterthorn.bandcamp.com.



From Brooklyn To Glindran, a new World/Free Jazz recording by Jim Goodin & Peter Thörn.  Proceeds
from the sale of this CD will benefit JDRF International.  jimgoodinpeterthorn.bandcamp.com.