SpeechCases

SpeechCases[audio,form] gives a list of cases of text identified as being of type form that appear in the transcription of audio.

SpeechCases[audio,{form1,form2,…}] gives an association of results for all the types formi. 

SpeechCases[audio,formspec->prop] gives the specified property for each result found.

SpeechCases[audio,formspec->{prop1,prop2,…}] gives a list of properties for each result found.

SpeechCases[audio,spec,n] gives the first n cases found.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.