Teensy Audio Analyzer

An audio analyzer using teensy 3.2 + audioshield

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Yes I know... True, that is another issue. Yeahhh and that too. But I do this just for fun! It is not meant to be an A.P. replacement or something, just an hobby project. Though, it might actually become quiet usable :)
So, basically this is nothing else than a teensy audioshield feeding its own input with its output. That is the hardware part. The rest is software, on the teensy and the PC.
The teensy 3.2 generates a sinewave of some adjustable frequency and this is sent to the output of the audioshield. With an external loop this is then is fed back into the input of the shield which is then read by the teensy and being analyzed. The idea is to put some equipment under test into the loop.
The software is still a mess. Publishing anyway. Remember it is work in progress ;)


Using pygame for visualization on the PC. Teensy sends the measurement data through serial and PC does live graphing. The data is also saved in a text file.

Planning adding an amplifier/attenuator with volume knob. Something to boost the teensy output to a much higher level.

  • 1 × teensy 3.2
  • 1 × Raspberry Pi 2 B
  • 1 × makerbeam kit
  • 1 × Adafruit 7" 1280x800 tft

  • progress enclosure

    marcell marosvolgyi04/01/2016 at 22:47 0 comments

    As PC we'll try a Raspberry Pi and we can easily put all parts in one smallish enclosure.

    To the right comes the control panel and some amp/att and filtering electronics. And of course the teensy/audio shield pair.

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