Table 3 Performance comparison of normalization methods on i-vector and i-supervector

i-vector

 raw

6.1785

3.1206

8.1486

3.7028

 len

4.9411

2.6286

6.4409

3.0581

 white + len

4.5458

2.4546

6.3193

3.0065

 white + len + snorm

4.3478

2.2155

6.1530

3.0034

i-supervector

 raw

5.2632

2.6605

6.7976

3.3368

 len

4.9199

2.6271

6.3667

3.3624

 grank + len

4.8982

2.6676

6.0976

3.2588

 grank + len + snorm

4.5888

2.3737

6.2639

3.1132