Training Data

The same as the training data for task 1.

Development Data

The same as the development data for task 1.

Evaluation Data

The evaluation data includes 80 speakers and each speaker has 3 visits. In each visit, there are multiple (“ni hao mi ya”) utterances. For each utterance, its corresponding recordings from one 25cm distance cellphone and 2-4 randomly selected microphone arrays are provided. For each microphone array, the selected four microphones are equally distributed along the circle with a random start channel index to simulate the scenarios with unknown array orientation angles. (e.g. channel 0,4,8,12; channel 1,5,9,13; channel 6,10,14,2, etc.)

Recording from 25cm distance cellphone will be selected as enrollment and the recordings from 2-4 randomly selected far-field microphone arrays will be used for test. For any true trial, the enrollment and the testing utterances are from different visits of the same speaker.

There is no overlapping among the speakers in the evaluation data in task1, task2, and task3.