|
| US4002835 | 6. Juni 1975 | 11. Jan. 1977 | | Multi-channel decoding circuit for two-channel audio systems |
| US4308424 | 14. Apr. 1980 | 29. Dez. 1981 | | Simulated stereo from a monaural source sound reproduction system |
| US4394535 | 9. März 1981 | 19. Juli 1983 | RCA Corporation | Split phase stereophonic sound synthesizer |
| US4685134 | 19. Juli 1985 | 4. Aug. 1987 | RCA Corporation | Multichannel computer generated sound synthesis system |
| US4706287 | 10. Dez. 1984 | 10. Nov. 1987 | Kintek, Inc. | Stereo generator |
| US4783814 | 9. Okt. 1986 | 8. Nov. 1988 | Comprehensive Health Care Corp. of America | Stethoscope having pseudostereophonic binaural enhancement |
| US5355416 | 13. Mai 1993 | 11. Okt. 1994 | Circuits Maximus Company, Inc. | Psycho acoustic pseudo-stereo fold back system |
| US5862228 | 21. Febr. 1997 | 19. Jan. 1999 | Dolby Laboratories Licensing Corporation | Audio matrix encoding |
| US6449368 | 14. März 1997 | 10. Sept. 2002 | Dolby Laboratories Licensing Corporation | Multidirectional audio decoding |
