Word-specific information for recognized words.
Output only. Time offset relative to the beginning of the
audio, and corresponding to the end of the spoken word. This
field is only set if enable_word_time_offsets=true and
only in the top hypothesis. This is an experimental feature
and the accuracy of the time offset can vary.
Output only. The confidence estimate between 0.0 and 1.0. A
higher number indicates an estimated greater likelihood that
the recognized words are correct. This field is set only for
the top alternative of a non-streaming result or, of a
streaming result where is_final=true. This field is not
guaranteed to be accurate and users should not rely on it to
be always provided. The default of 0.0 is a sentinel value
indicating confidence was not set.