Howl: A formant synthesizer

Version 2.2
Price $1.99
Category Instruments / Synthesizers
Compatible with
  • iPad2 3G
  • iPad2 Wifi
  • Languages
    Release Date Dec 20, 2015
    Updated On Mar 16, 2018
    Size 13.7 Mo
    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.


    • 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

    Daniel Clelland Howl: A formant synthesizer

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      Howl: A formant synthesizer
      Daniel Clelland Howl: A formant synthesizer
      Daniel Clelland
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