LVCSR Documentation - convert

CONVERT_MODELS

Introduction:

This shell script is a wrapper for an ensemble of C and PERL scripts that are used to convert ASCII HTK models into formats specific to the ISIP recognition system. The master model file (MMF) generated by HTK is a file containing all the HMM model definitions used in the system. This file contains the state information and transition matrices for all physical models. The ISIP recognition system expects the model data in a more distributed format. States, transitions and model definitions need to be specified in separate files. This script creates these files from HTK's MMF files. Note that this script does not accept input files in the binary format. It also expects all models to be present in one single MMF.

Usage:

convert_models.sh < output_mode > < input_mmf > < states_file > < models_file > < trans_file >

output_mode	ascii/binary	output format for the state definition file
input_mmf	ascii_mmf.text	HTK generated MMF file in ASCII
states_file	states.text	output state definition file in ISIP format
models_file	models.text	output model definition file in ISIP format
trans_file	transition.text	output transition definition file in ISIP format

Description:

This script splits the HTK format MMF file into several independent components like states, transitions etc. and then converts these components into formats recognized by the ISIP recognizer.
Examples:
- Mode 1
  convert_models.sh ascii ascii_mmf.text states.text models.text transitions.text
- Mode 2
  convert_models.sh binary ascii_mmf.text states.bin models.text transitions.text
Related links:

convert_mmf
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