> For the complete documentation index, see [llms.txt](https://holy-city-audio.gitbook.io/spincad-designer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://holy-city-audio.gitbook.io/spincad-designer/blocks/controls.md).

# Controls

Control signals are non-audio signals used to control things like volume, LFO speeds, etc.