README.md

Sphinx OPS Aphasia Models

This is the main repository to build an acoustic model for sphinx based on the Open Speech Corpus Aphasia Corpus.

First execute the script download_word_recordings.py, this script will fetch all data from OPS.

Then execute the script convert_mp4_to_wav.py, to execute this script you must have FFMpeg installed and on your path.

After you need to prepare sphinx configuration data, to achieve this:

Then you can call the script configure_sphinx.py, this script will configure almost all the files required by sphinx, but to create a custom language model you need to execute generate_language_model.sh.

Make sure you have sphinxtrain installed on your pc

Now execute

sphinxtrain -t ops_aphasia setup

After this in your etc folder you will have a full structure or what you need for your project

Please check this link for further information.

Search for $CFG_HMM_TYPE and select .semi If you are on a multicore machine change $CFG_QUEUE_TYPE to Queue::POSIX and $CFG_NPART and $DEC_CFG_NPART to your machine cores

Then execute the train

sphinxtrain run

This could take some time.

To check the results

pocketsphinx_continuous -hmm model_parameters/ops_aphasia.ci_semi/ -lm etc/ops_aphasia.lm.DMP -dict etc/ops_aphasia.dic -inmic yes