This program will list the contents of one or more data sources in any HTK supported format. It uses the full HTK speech input facilities described in chapter 5 and it can thus read data from a waveform file, from a parameter file and direct from an audio source. HLIST provides a dual rôle in HTK. Firstly, it is used for examining the contents of speech data files. For this function, the TARGETKIND configuration variable should not be set since no conversions of the data are required. Secondly, it is used for checking that input conversions are being performed properly. In the latter case, a configuration designed for a recognition system can be used with HLIST to make sure that the translation from the source data into the required observation structure is exactly as intended. To assist this, options are provided to split the input data into separate data streams (-n) and to explicitly list the identity of each parameter in an observation (-o).