This section describes the x-vector system. It is based on the DNN
embeddings in [1] and described in greater detail there.
Our software framework has been made available in the Kaldi
toolkit. An example recipe is in the main branch of Kaldi at https:
//github.com/kaldi-asr/kaldi/tree/master/egs/
sre16/v2 and a pretrained x-vector system can be downloaded
from http://kaldi-asr.org/models.html. The recipe
and model are similar to the x-vector system described in Section
4.4.