13.10.1 Function

  This program will read in a HMM list and a set of HTK format transcriptions (label files). It will then compute various statistics which are intended to assist in analysing acoustic training data and generating simple language models for recognition. The specific functions provided by HLSTATS are:

1. number of occurrences of each distinct logical HMM and/or each distinct physical HMM. The list printed can be limited to the N most infrequent models.
2. minimum, maximum and average durations of each logical HMM in the transcriptions.
3. a matrix of bigram probabilities
4. an ARPA/MIT-LL format text file of back-off bigram probabilities
5. a list of labels which cover the given set of transcriptions.