What is the procedure of training one far-distance ASR model for noise environment

[Sundy1219]

Hi,
As we all know, recipes in kaldi is mostly for quiet environment. Now I want to train a ASR model with chain model for noise environment. my question is as follows:

1. Does i need to add noise segments to clean wav in GMM training stages? Namely, only clean wav can be used in GMM training stages, is right ?
2. the procedure of adding noise segments appeared in after GMM training and before chain model training，is right?. And, we need to use 'steps/align_fmmr_lats.sh' for realigning. is right ?
   Please tell me the whole procedure of training one far-distance ASR model with chain model for noise environment. Thank you

[danpovey]

It's probably not that critical when you add the noise.
Search for scripts with 'multi_condition' in the name, these will be adding noise.

[Sundy1219]

Thank you for reply. I see.

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