New Gadget Madly In Hope

A blog about my iPhone dev efforts

24 January

PolyHarp 1.0.5

PolyHarp got released a while ago, but meanwhile little bugs keep popping up in the MIDI department.
Most of those have to do with the fact that a lot of MIDI synths would like a note off after a while. A note off is really kind of independent of a note on. PolyHarp has a timer that starts with note ons to shut them off after a while . The natural way to turn them off is when they are damped or run out of energy. You can't test the energy of a MIDI note, which is why PolyHarp just scheduled a Note Off.
There was a bug where I was scheduling too many note offs that I fixed a few weeks ago, but there's a more subtle bug:
Play one note and play it again .. the first note's scheduled note off would shut off the new note prematurely. I've now fixed this in PolyHarp 1.0.5
16:36:13 - jhhlnet -

13 December

PolyHarp 1.0.1 released

PolyHarp was released a few weeks ago, and I already have an update for it, which fixes a few typos. I'm continuing to rewrite the instructions - much of which refers to outdated UI and features!

PolyHarp provides a lot of control in its controls now: you can make the strings play with a touch, bend, retune, and be confined to string areas onscreen. You can control the chord bars from MIDI in or Audiobus Remote.
The chords can be made out of all kinds of intervals, repeat, and be displayed out of order. The string areas can be any four-cornered shape, twist and overlap. They can be colored in harmonious ways.

Go check it out at
10:32:47 - jhhlnet -

28 April

Wassup 2018

Here are some projects I'm working on:

There's a new app not under my name in the app store that I wrote: Verna! The food preference app. Read about it at .

Unreleased apps in various states of completion:

PolyHarp: I wanted to get this out in December, but it looked bad on iPhone X (in emulation at leaset) so I am trying to get it to behave. As a side effect, it now runs in Landscape like lots of other music apps, although I prefer Portrait. Some parts are still a little wonk in Landscape, I'm looking into them.

AUMI Sings: this is a project much like AUMI, but more sophisticated musically. AUMI Sings is designed to allow voiceless people to sing in a choir. This problem is very difficult, but it mainly means extending the concept of selecting a sound with a cursor to being able to change the choices for sounds with the cursor , and also modulating sounds with a cursor. While it's initially concerned with vocal sounds, it actually opens up the concept to more sophisticated music making. Beside having a new, more logical and extensible codebase, and directly participating in the iOS musical ecosystem, it will be more rigorous in its configurations and eventually have more kinds of trackers.

AUMI: AUMI is slowly building its way toward 2.0 from it's already more powerful 1.7 version (which has time quantizations and face tracking) . The internals are being fixed up so that instruments now can be grouped in sections (because there are now a great number of them), video options and other obscurities will be moved from the settings part of the instructions, I hope to redo the instructions so they are not one big document. And much more!

Fortuna tuner: Fortuna uses visualizations of the sound itself to show you how in tune your instrument is. It compares live audio to pitches derived from intervals taken from the vast set of Scala scales. I'm extending the Scala format somewhat, adding base pitches and various tags so you can search for them intelligently. This way, I can also add standard tunings for instruments. When done, it should be able to import and export scales in Scala format, and you should be able to build them using my Tone Spiral interface and also by analyzing a recording (or even live audio). Eventually, it should be available as an AUv3 (it might be a kind of a pig though), and used in a sound chain.

Drongen: The successor to Droneo is underway and has a way to go. Basically, it'll have a more sophisticated graph of transitions between timbre states and intervals, rhythmic control, and no limits on simultaneous voices, and cross-communication so that decisions made in one node can influence voices in other nodes. There will be special "views" of the graph to make it easier to set it up in terms of pitch an d timbre. Timbre will be expanded to samples and generated wavetables (impulse x formant model) It kind of makes my head hurt.

Fit2fake: My unreleasable demo program is really fun! It takes summaries from the New York Times API and makes up fake news based on mashing them together. It would violate NYTimes API restrictions were I to release it. I may rebuild it, though, so it can take a variety of corpuses from a server I'd set up.

Sitting In A Room: Another special project made a really long delay recording , meant to be played through a speaker, like the famous "I Am Sitting In A Roo" by Alvin Lucier. I may release it with his permission.

20:26:27 - jhhlnet - No comments yet, click here to add one

03 May

Yes Session Refreshin'

Apple thinks Yes Session is "too old" , so I'm updating it to work with bigger iOs phone devices.
It's not any smarter than it used to be, no new messages, but at least it's going to know about iPhone 7s and other large phones.

Yes Session, while not very musical, is an interesting thought experiment, and I sometimes need its encouragement myself!
22:32:53 - jhhlnet - No comments yet, click here to add one

13 March

Enumero 1.2

Enumero 1.2 is waiting to get into the store; the updated version will be the first of my purged apps to make it back!
This version is much more fun than 1.1: more sounds, better hardware and orientation support, and Audiobus/IAA support too!
Read all about it at
00:07:41 - jhhlnet - No comments yet, click here to add one