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Thread: Teensynth

  1. #1
    Junior Member
    Join Date
    Mar 2019



    New to the forum and new to Teensy boards, a pleasure...

    I'm looking to make a rather simplistic synth (1-2 osc, arpeggiator, amp-envelope, filters, and a few effects).
    Looking for a nice "How-to"/tutorial to at least figure out the hardware components and the first steps.

    Q's I have so far:
    1. Must I use the Audio adaptor in order to do any work with audio (synth, sample sequencer, etc).
    2. what board should I use (3.2, 3.6)? It's a rather simple synth. if 3.6 - how do I know how to put on the audio adaptor?
    3. would teensy's audio library allow me to play polyphonic notes and play 2 osc's simultaneously?

    Sorry for the low-res question.

    Any help/reference would be great.

  2. #2
    Senior Member+ Theremingenieur's Avatar
    Join Date
    Feb 2014
    Colmar, France
    The audio library can do everything you need. It can also work with the audio adapter shield, but it's not mandatory. If 12bit resolution @44.1kS/s is enough for you, you might go away with the internal ADCs and DAC(s) of the Teensy 3.x.

    The Teensy 3.2 has only one DAC, giving you one single line output (onto which the audio lib might send multiple signals through a virtual mixer, though), the Teensy 3.5 and 3.6 have 2 DACs giving you 2 independent line outputs, if needed.

    I'd start the project with a Teensy 3.2 which should be able to handle your needs. If you run into issues afterwards, ordering a Teensy 3.6 and migrate your code is a task of 5 minutes.

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