This noise box has two piezo pickups, the signal from which falls into the left and right channels, respectively, which allows you to get a real stereo signal at the output.
In the effects processor, I used the DReverb VST plugin I developed, which, with minor C++ code edits, is adapted to the microcontroller, as well as the Shimmer effect, which gives a more harmonic-rich sound. There is a Freeze mode that can “freeze” the sound for a long time.
The part of the plug-in that implements the DSP functions quite accurately. However, I have not yet figured out the correct allocation of memory in the SDRAM area. That’s why I’m still trying to port the more complex reverberation algorithm of the Ambient Reverb 7 plugin.
I have now finalized the code by adding a delay line size adjustment, similar to what I did in the Ambient Reverb 7 plugin. You can see how it works with the noise box here.
As soon as everything is done, I will post the code and the electrical circuit diagram on github.
Fantastic work! Thank you for sharing this. This is what I am dreaming of building. I wonder if you could give a hint at how the signals from the pickups are processed/accepted into the Daisy Seed? I find it a little difficult finding information on the easiest way to connect a microphone (preferably a PDM) to the Seed or the Pod. Kind regards
The repository will be ready soon. The “finishing touches” remained.
There will be all the necessary information to build a noise box with an integrated effects processor.
I tried to do an experiment - add a stereo delay to the circuit of the noisebox sound module with a delay time ratio of the left to right channel as 4:5. Well, I also leaned the kalimba against the body, so to speak, in a fit of fantasy
You can check out what came out of this by listening to the attached audio.
