Issued:

1. L. Lee, H. Attias, and L. Deng, "Method Of Speech Recognition Using Variational Inference with Switching State Space Models", U.S. Patent No. 7,487,087.
2. L. Lee, H. Attias, and L. Deng, "Method Of Speech Recognition Using Multimodal Variational Inference with Switching State Space Models", U.S. Patent No. 7,480,615.
3. L. Lee, H. Attias, and L. Deng, "Variational Inference and Learning for Segmental Switching State Space Models of Hidden Speech Dynamics", U.S. Patent No. 7,454,336.

Pending:

1. L. Lee, L. Deng, H. Attias, and A. Acero, "Method and Apparatus for Continuous Valued Vocal Tract Resonance Tracking Using Piecewise Linear Approximations", U.S. Patent Application No. 20050114134, filed in January 2004.