When it rains in San Francisco, the raindrops ping off of some sort of pipe near my office window, and it sounds just like a thumb piano being plucked. This same noise correlation is explored in Max Cooper's Order from Chaos. I wanted to build something that lets me have my own "pet rainstorm".
- Person picks up the kalimba and starts to plink on it.
- Rain noises start to plink back.
- As the person plays more, the plinks grow more frequent, and then thunder begins to roll in.
- Ideally, I'll add a thunder cloud that sparks "lightning" as you play on, and a mister that feeds my air plants. But that might be a project for another day :)
I figure I can control this with a simple counter, which increments when the kalimba is plinked, and decays over time, so that you get a storm which builds and then rolls away depending on the amount of plinking.
...These already come as WAVs!
Honestly, the Touch Board seems like overkill for this.