Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7925006 | Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus | Toru Hirai, Mikio Tohyama, Hiraku Okumura, Yoshikazu Honji, Koji Niimi | 2011-04-12 |
| 7925008 | Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus | Toru Hirai, Mikio Tohyama, Hiraku Okumura, Yoshikazu Honji, Koji Niimi | 2011-04-12 |
| 7403609 | Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus | Toru Hirai, Mikio Tohyama, Hiraku Okumura, Yoshikazu Honji, Koji Niimi | 2008-07-22 |
| 7076068 | Three-dimensional sound reproducing apparatus and a three-dimensional sound reproduction method | Hiromi Sotome, Shigeo Ando, Shinichi Muramatsu, Akio Takahashi | 2006-07-11 |