Howl: A formant synthesizer

HOWL is a simple vocoder/synthesizer. It uses formants to simulate the human voice and a pitch-space keyboard to help you find interesting melodies.

Category	Price	Seller	Device
Music	Free	Daniel Clelland	iPhone, iPad, iPod

Features:

• Simple synthesizer (just a sawtooth wave nothing too complicated okay)
• Simple vocoder (four parallel bandpass filters, a bit like the Klatt engine)
• Audiobus support, so you can pipe your own audio through the vocoder and/or send the output to other software
• Adjustable pitch-space keyboard
• Cool FX (bitcrush, reverb, vibrato and tremolo)

Download it today!

HOWL is also open source (check out the code at https://github.com/dclelland/HOWL).

Reviews

Fun, easy & cool
ludwig van beertoven

that’s not just what my business card says; it applies to howl too. this app totally fills my formant needs (which were considerable in Q2 and expected to increase for the rest of the fiscal year) and adds enough fx options to make it more than a novelty. the interface is excellent

Want to Like it - No Audiobus or AUM
SpiritMonkee

Does not load in either Audiobus or AUM. Also, the vowel pad has no graphic effect as pictured.

Doesn’t open in AUM or AudioBus3 for me.
DBALLSR

Doesn’t open in AUM or AudioBus3 for me; too bad. I really want it to work

I like it but...
Mozfits

Can’t figure out why when the app is open it disables sound output to my Bluetooth headphones. Makes it useless when I’m traveling or on the train.

A brilliant little formant synth app
ChrisE1G

Ok so this is (at least at the moment) free, so you could just download it and give it a try. It's a formant synth, two large areas for note/pitch and controlling vowels. You can definitely get that low Mongol voice sound thing going on with this. Great stuff. I do wish this had Audiobus and/or IAA as it is such a great little synth and kinda deserves some AB/IAA love (pls dev?:)

awesome synth, please add automation!
mikfreq

what a spectacular little synth, if this thing had automation, audiobus in app audio that sort of thing it would be even more spectacular but since it's free I'm going to say it's spectacular just like it is... I would buy a features upgrade if it included all kinds of cool stuff like that, especially automation, please add automation!