Various sound modules
From wiki-en
DC-Car-Soundmodules
DC car sound modules are run as Tiny. These small building blocks are space-saving to install and can be operated with the voltage converter of the DC Car decoder - SI. The different types of Soundtiny can be found here: Soundtiny
Another possibility is to use real sounds. This requires a different sound module, which can be individually recorded: Realsound with TBS-Micro
