|
| US3962543 | 15. Mai 1974 | 8. Juni 1976 | Eugen Beyer Elektrotechnische Fabrik | Method and arrangement for controlling acoustical output of earphones in response to rotation of listener's head |
| US3970787 | 11. Febr. 1974 | 20. Juli 1976 | Massachusetts Institute of Technology | Auditorium simulator and the like employing different pinna filters for headphone listening |
| US4087631 | 19. Febr. 1976 | 2. Mai 1978 | Matsushita Electric Industrial Co., Ltd. | Projected sound localization headphone apparatus |
| US4097689 | 9. Febr. 1976 | 27. Juni 1978 | Matsushita Electric Industrial Co., Ltd. | Out-of-head localization headphone listening device |
| US4118599 | 25. Febr. 1977 | 3. Okt. 1978 | Victor Company of Japan, Limited | Stereophonic sound reproduction system |
| US4136260 | 17. Mai 1977 | 23. Jan. 1979 | Trio Kabushiki Kaisha | Out-of-head localized sound reproduction system for headphone |
| US4139728 | 11. Apr. 1977 | 13. Febr. 1979 | Victor Company of Japan, Ltd. | Signal processing circuit |
| US4159397 | 5. Mai 1978 | 26. Juni 1979 | Victor Company of Japan, Limited | Acoustic translation of quadraphonic signals for two- and four-speaker sound reproduction |
| US4910779 | 2. Nov. 1988 | 20. März 1990 | | Head diffraction compensated stereo system with optimal equalization |
| US4975954 | 22. Aug. 1989 | 4. Dez. 1990 | | Head diffraction compensated stereo system with optimal equalization |
| US5034983 | 22. Aug. 1989 | 23. Juli 1991 | | Head diffraction compensated stereo system |
| US5136651 | 12. Juni 1991 | 4. Aug. 1992 | | Head diffraction compensated stereo system |
| US5638343 | 13. Juli 1995 | 10. Juni 1997 | Sony Corporation Sony Electronics, Inc. | Method and apparatus for re-recording multi-track sound recordings for dual-channel playbacK |
| US5661812 | 21. Nov. 1996 | 26. Aug. 1997 | Sonics Associates, Inc. | Head mounted surround sound system |
| US5798922 | 24. Jan. 1997 | 25. Aug. 1998 | Sony Corporation Sony Pictures Entertainment, Inc. | Method and apparatus for electronically embedding directional cues in two channels of sound for interactive applications |
| US6002775 | 14. Aug. 1998 | 14. Dez. 1999 | Sony Corporation Sony Pictures Entertainment Inc. | Method and apparatus for electronically embedding directional cues in two channels of sound |
| US6009179 | 24. Jan. 1997 | 28. Dez. 1999 | Sony Corporation Sony Pictures Entertainment, Inc. | Method and apparatus for electronically embedding directional cues in two channels of sound |
| US6067361 | 16. Juli 1997 | 23. Mai 2000 | Sony Corporation Sony Electronics, Inc. | Method and apparatus for two channels of sound having directional cues |
| US6154545 | 12. Aug. 1998 | 28. Nov. 2000 | Sony Corporation Sony Pictures Entertainment, Inc. | Method and apparatus for two channels of sound having directional cues |
| US7139402 | 29. Juli 2002 | 21. Nov. 2006 | Matsushita Electric Industrial Co., Ltd. | Sound reproduction device |
| US7634092 | 14. Okt. 2004 | 15. Dez. 2009 | Dolby Laboratories Licensing Corporation | Head related transfer functions for panned stereo audio content |