# Instrument XI, Droplet Generator A number of atmospheric sounds and animal calls can be made by using two curves, one for pitch and one for amplitude, that vary over time, especially if you run the result through reverbs or delays. Water droplets, bird calls, and laser sounds can all be built with this simple technique. > [!cite] Lore > ![[11-the-sunflower.png]] > The Sunflower (art by Dead Carcosa) ## Droplet Generator This patch uses two `[function]` objects, one representing pitch, and one representing amplitude. You can save multiple presets and it will randomly pick matching pairs of envelopes with every new note. > [!example] > ![[image-109.png]] > An example droplet generator.