Silences and pauses handling

[srdhm]

I have a question regarding pauses and silences handling.
If I specify if the config files the pattern for the pauses and silences :
silence_pattern: ['-sil+','-pau+']

Will the whole training be done without them or just the computation of the metrics ( CORR, RMSE,...) , if the whole training is done without them how they can be incorporated in the synthesised files later if the network never learnt how to generate silence frames ?

Thanks