Configuration files are used to describe processing information. Three types are needed throughout SPRAAK:

.preproc Preprocessing File: In SPRAAK there is just one signal processing program spr_sigp.c . It uses a .ssp configuration file to describe what processing needs to be done. Such .ssp configuration is a list of processing modules with their parameters that are processed in a pipelined manner.
.config Configuration File: A .config file contains a setup for an acoustic model training. A .config file is written in Python code and the variables are hence identical to the configuration object of spr_train.py . The different implemented training methods are passed via the trainer object .
.ini Initialization File: A .ini file contains all initialization information for an evaluation experiment as used by spr_eval.py .