Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6233549 | Low frequency spectral enhancement system and method | Gilbert C. Sih | 2001-05-15 |
| 6122384 | Noise suppression system and method | — | 2000-09-19 |
| 5920834 | Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system | Gilbert C. Sih | 1999-07-06 |