Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4932061 | Multi-pulse excitation linear-predictive speech coder | Peter Kroon, Edmond F. A. Deprettere | 1990-06-05 |
| 4384335 | Method of and system for determining the pitch in human speech | Hendrikus Duifhuis, Leonardus F. Willems | 1983-05-17 |