Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978236 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching | Kristofer Kjorling, Per Ekstrand, Fredrik Henn | 2005-12-20 |
| 6925116 | Source coding enhancement using spectral-band replication | Per Ekstrand, Lars Fredrik Henn, Hans Magnus Kristofer Kjorling | 2005-08-02 |
| 6708145 | Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limiting | Kristofer Kjorling, Per Ekstrand, Fredrik Henn | 2004-03-16 |
| 6680972 | Source coding enhancement using spectral-band replication | Per Ekstrand, Lars Fredrik Henn, Hans Magnus Kristofer Kjorling | 2004-01-20 |
| 4731852 | Method to electronically clarify sound or picture information and an arrangement to carry out the method | — | 1988-03-15 |