“TalkBox” is a pretty common name. It is used in a variety of domains, such music or voice-based web apps. We use the name as a riff on the BeetBox Project by Scott Garner, which is a simple musical instrument that allows users to play drum beats by touching actual beets. Both TalkBox and BeetBox use Raspberry Pi and touch capacitors.
The BeetBox is shown below:
image source: http://scott.j38.net/interactive/beetbox/