Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701389 | Window switching based on interblock and intrablock frequency band energy | James David Johnston | 1997-12-23 |
| 5699479 | Tonality for perceptual audio compression based on loudness uncertainty | Jonathan B. Allen, James David Johnston, Mark Sydorenko | 1997-12-16 |
| 5625745 | Noise imaging protection for multi-channel audio signals | James David Johnston | 1997-04-29 |