Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8428272 | Masking sound generating apparatus, masking system, masking sound generating method, and program | Mai Koike, Yasushi Shimizu | 2013-04-23 |
| 8160732 | Noise suppressing method and noise suppressing apparatus | Michiko Kazama, Koji Kushida | 2012-04-17 |
| 8005234 | Method for synthesizing impulse response and method for creating reverberation | Yoshinori Takahashi, Hiroaki Fujita | 2011-08-23 |
| 7996213 | Method and apparatus for estimating degree of similarity between voices | Michiko Kazama, Satoru Goto, Takehiko Kawahara, Yasuo Yoshioka | 2011-08-09 |
| 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, Hiraku Okumura, Yoshikazu Honji, Hiroshi Iriyama, Koji Niimi | 2011-04-12 |
| 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, Hiraku Okumura, Yoshikazu Honji, Hiroshi Iriyama, Koji Niimi | 2011-04-12 |
| 7844058 | Hearing processing method and hearing aid using the same | Michiko Kazama, Yoshinori Takahashi, Kiyoaki Terada, Shinichi Sakamoto, Keisuke Watanuki +1 more | 2010-11-30 |
| 7596495 | Current noise spectrum estimation method and apparatus with correlation between previous noise and current noise signal | Michiko Kazama, Toru Hirai | 2009-09-29 |
| 7574005 | Howling frequency component emphasis method and apparatus | Yoshinori Takahashi, Hiroaki Fujita, Hiraku Okumura | 2009-08-11 |
| 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, Hiraku Okumura, Yoshikazu Honji, Hiroshi Iriyama, Koji Niimi | 2008-07-22 |
| 7130428 | Picked-up-sound recording method and apparatus | Toru Hirai, Fukushi Kawakami, Yasushi Shimizu, Yoshikazu Honji, Masahiro Ikeda | 2006-10-31 |
| 6950513 | Impulse response setting method for the 2-channel echo canceling filter, a two-channel echo canceller, and a two-way 2-channel voice transmission device | Toru Hirai, Yoshikazu Honji, Aya Togura | 2005-09-27 |
| 5987143 | Method and apparatus for erasing acoustic echo | Takatoshi Okuno, Hirofumi Yanagawa | 1999-11-16 |
| 5960373 | Frequency analyzing method and apparatus and plural pitch frequencies detecting method and apparatus using the same | Hiroaki Fukuda, Takahiko Terada | 1999-09-28 |