5.5.1 Cross-Word CD Phones: Triphone Generation
To begin, we must generate the triphones. For cross-word context dependent models, only triphones are used to model speech since the models cross word boundaries. Once again, a list of all units seen in the transcription database will be generated. For an explanation of the purpose of this step, see Section 5.4.1. Go to the directory:
Command: isip_recognize -param params_context.sof -list $ISIP_TUTORIAL/research/isip/databases/lists/identifiers_train.sof -verbose all Version: 1.23 (not released) 2003/05/21 23:10:45 loading audio database: $ISIP_TUTORIAL/research/isip/databases/db/tidigits_audio_db.sof *** no symbol graph database file was specified *** loading transcription database: $ISIP_TUTORIAL/research/isip/databases/db/tidigits_trans_word_db.sof loading front-end: $ISIP_TUTORIAL/recipes/frontend.sof loading language model: $ISIP_TUTORIAL/models/xword_phone_models/lm_xword_jsgf.sof loading statistical model pool: $ISIP_TUTORIAL/models/xword_phone_models/smp_xword.sof loading configuration file: $ISIP_TUTORIAL/sections/s05/s05_04_p01/config.sof processing file 1 (ae_12a): $ISIP_TUTORIAL/research/isip/databases/sof_8k/train/ae_12a.sof retrieving annotation graph for identifier: ae_12a, level: word transcription: ONE TWO processing file 2 (ae_1a): $ISIP_TUTORIAL/research/isip/databases/sof_8k/train/ae_1a.sof retrieving annotation graph for identifier: ae_1a, level: word transcription: ONE processing file 3 (ae_2789385a): $ISIP_TUTORIAL/research/isip/databases/sof_8k/train/ae_2789385a.sof ....The context list generated by the step above can now be used to generate the triphone model file. From the same directory, run the command:
Command: isip_recognize -param params_generate.sof -verbose all Version: 1.23 (not released) 2003/05/21 23:10:45 loading audio database: $ISIP_TUTORIAL/research/isip/databases/db/tidigits_audio_db.sof *** no symbol graph database file was specified *** loading transcription database: $ISIP_TUTORIAL/research/isip/databases/db/tidigits_trans_word_db.sof loading front-end: $ISIP_TUTORIAL/recipes/frontend.sof loading language model: $ISIP_TUTORIAL/models/xword_phone_models/lm_xword_jsgf.sof loading statistical model pool: $ISIP_TUTORIAL/models/xword_phone_models/smp_xword.sof loading configuration file: $ISIP_TUTORIAL/sections/s05/s05_04_p01/config.sofThe context independent phone models generated and trained in Section 5.3 are used to build the triphone acoustic model. For a more in-depth explanation of triphone generation, see Section 5.4.1. |
