| Presentation # | 3 |
| Session: | Speaker Recognition/Verification |
| Session Time: | Thursday, December 20, 10:00 - 12:00 |
| Presentation Time: | Thursday, December 20, 10:00 - 12:00 |
| Presentation: |
Poster
|
| Topic: |
Speaker/language recognition: |
| Paper Title: |
GENERATIVE X-VECTORS FOR TEXT-INDEPENDENT SPEAKER VERIFICATION |
| Authors: |
Longting Xu; National University of Singapore | | |
| | Rohan Kumar Das; National University of Singapore | | |
| | Emre Yilmaz; National University of Singapore | | |
| | Jichen Yang; National University of Singapore | | |
| | Haizhou Li; National University of Singapore | | |
| Abstract: |
Speaker verification (SV) systems using deep neural network embeddings, so-called the x-vector systems, are becoming popular due to its good performance superior to the i-vector systems. The fusion of these systems provides improved performance benefiting both from the discriminatively trained x-vectors and generative i-vectors capturing distinct speaker characteristics. In this paper, we propose a novel method to include the complementary information of i-vector and x-vector, that is called generative x-vector. The generative x-vector utilizes a transformation model learned from the i-vector and x-vector representations of the background data. Canonical correlation analysis is applied to derive this transformation model, which is later used to transform the standard x-vectors of the enrollment and test segments to the corresponding generative x-vectors. The SV experiments performed on the NIST SRE 2010 dataset demonstrate that the system using generative x-vectors provides considerably better performance than the baseline i-vector and x-vector systems. Furthermore, the generative x-vectors outperform the fusion of i-vector and x-vector systems for long-duration utterances, while yielding comparable results for short-duration utterances. |