Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9847094 | Voice processing device, voice processing method, and non-transitory computer readable recording medium having therein program for voice processing | — | 2017-12-19 |
| 9679577 | Voice switching device, voice switching method, and non-transitory computer-readable recording medium having stored therein a program for switching between voices | — | 2017-06-13 |
| 9620149 | Communication device | Hitoshi Sasaki | 2017-04-11 |
| 9485572 | Sound processing device, sound processing method, and program | Yoshiteru Tsuchinaga | 2016-11-01 |
| 9245536 | Adjustment apparatus and method | — | 2016-01-26 |
| 9129594 | Signal processing apparatus and signal processing method | — | 2015-09-08 |
| 9070372 | Apparatus and method for voice processing and telephone apparatus | Takeshi Otani, Hitoshi Sasaki, Mitsuyoshi Matsubara, Rika Nishiike, Kaoru Chujo | 2015-06-30 |
| 8781823 | Voice band enhancement apparatus and voice band enhancement method that generate wide-band spectrum | — | 2014-07-15 |
| 8751221 | Communication apparatus for adjusting a voice signal | Yasuji Ota, Takeshi Otani, Taro Togawa | 2014-06-10 |
| 8560308 | Speech sound enhancement device utilizing ratio of the ambient to background noise | Yasuji Ota, Takeshi Otani, Taro Togawa | 2013-10-15 |
| 8526578 | Voice communication apparatus | Takeshi Otani, Taro Togawa, Yasuji Ota | 2013-09-03 |
| 8457955 | Voice reproduction with playback time delay and speed based on background noise and speech characteristics | Taro Togawa, Takeshi Otani, Yasuji Ota | 2013-06-04 |
| 8438035 | Concealment signal generator, concealment signal generation method, and computer product | Yasuji Ota, Chikako Matsumoto | 2013-05-07 |
| 8364475 | Voice processing apparatus and voice processing method for changing accoustic feature quantity of received voice signal | Taro Togawa, Takeshi Otani, Yasuji Ota | 2013-01-29 |
| 8280727 | Voice band expansion device, voice band expansion method, and communication apparatus | Takeshi Otani, Taro Togawa, Yasuji Ota | 2012-10-02 |
| 8243941 | Active noise reduction system and active noise reduction method | Taro Togawa, Takeshi Otani, Yasuji Ota | 2012-08-14 |
| 8189800 | Active silencer and method for controlling active silencer | Taro Togawa, Takeshi Otani, Yasuji Ota | 2012-05-29 |
| 8155333 | Active noise control apparatus | Taro Togawa, Takeshi Otani, Yasuji Ota | 2012-04-10 |
| 8005219 | Data decryption apparatus and data encryption apparatus | Taro Togawa, Takeshi Otani, Masakiyo Tanaka, Yasuji Ota | 2011-08-23 |
| 7925500 | Pitch conversion method and device for converting a pitch of an input signal into a desired pitch | Chikako Matsumoto, Taro Togawa, Yasuji Ota | 2011-04-12 |
| 7783481 | Noise reduction apparatus and noise reducing method | Takeshi Otani, Mitsuyoshi Matsubara, Yasuji Ota | 2010-08-24 |
| 7664650 | Speech speed converting device and speech speed converting method | Yasuji Ota, Taro Togawa | 2010-02-16 |
| 7454345 | Word or collocation emphasizing voice synthesizer | Hitoshi Sasaki, Yasushi Yamazaki, Yasuji Ota, Nobuyuki Katae, Kazuhiro Watanabe | 2008-11-18 |
| 6490554 | Speech detecting device and speech detecting method | Yasuji Ota | 2002-12-03 |
| 6055563 | Transfer and display of virtual-world data | Yasuhiro Kawakatsu | 2000-04-25 |