Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912764 | Digital speech coder with different excitation types | Walter T. Hartwell, Joseph Picone | 1990-03-27 |
| 4890328 | Voice synthesis utilizing multi-level filter excitation | David Thomson | 1989-12-26 |
| 4879748 | Parallel processing pitch detector | Joseph Picone | 1989-11-07 |
| 4797926 | Digital speech vocoder | Edward C. Bronson, Walter T. Hartwell, Willem Baastian Kleijn | 1989-01-10 |
| 4616659 | Heart rate detection utilizing autoregressive analysis | Gustavus H. Zimmerman, III | 1986-10-14 |
| 4581747 | Arrangement for equalizing the variable attenuation of a signal on a communication line | Nancy M. Saraf | 1986-04-08 |
| 4561102 | Pitch detector for speech analysis | — | 1985-12-24 |