Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9282397 | Acoustic signal corrector and acoustic signal correcting method | Norikatsu Chiba | 2016-03-08 |
| 8811623 | Information processing apparatus and program | Takashi Sudo | 2014-08-19 |
| 8577051 | Sound signal compensation apparatus and method thereof | Norikatsu Chiba, Yasuhiro Kanishima | 2013-11-05 |
| 8488807 | Audio signal compensation device and audio signal compensation method | Norikatsu Chiba, Yasuhiro Kanishima, Kazuyuki Saito, Toshifumi Yamamoto, Takashi Fukuda | 2013-07-16 |
| 8401203 | Information processing apparatus and program | Takashi Sudo | 2013-03-19 |
| 8315861 | Wideband speech decoding apparatus for producing excitation signal, synthesis filter, lower-band speech signal, and higher-band speech signal, and for decoding coded narrowband speech | — | 2012-11-20 |
| 8260621 | Speech coding method and apparatus for coding an input speech signal based on whether the input speech signal is wideband or narrowband | — | 2012-09-04 |
| 8249866 | Speech decoding method and apparatus which generates an excitation signal and a synthesis filter | — | 2012-08-21 |
| 8244547 | Signal bandwidth extension apparatus | Takashi Sudo | 2012-08-14 |
| 8238568 | Acoustic signal compensator and acoustic signal compensation method | Norikatsu Chiba, Yasuhiro Kanishima | 2012-08-07 |
| 8160871 | Speech coding method and apparatus which codes spectrum parameters and an excitation signal | — | 2012-04-17 |
| 8041563 | Apparatus for coding a wideband audio signal and a method for coding a wideband audio signal | Hirokazu Takeuchi, Masataka Osada | 2011-10-18 |
| 7788105 | Method and apparatus for coding or decoding wideband speech | — | 2010-08-31 |
| 7698296 | Content-reproducing apparatus | Chikashi Sugiura, Takehiko Isaka | 2010-04-13 |
| 7443978 | Method and apparatus for audio coding with noise suppression | Takehiko Isaka, Takashi Obara | 2008-10-28 |
| 7191120 | Speech encoding method, apparatus and program | Masahiro Oshikiri, Masami Akamine | 2007-03-13 |
| 7058574 | Signal processing apparatus and mobile radio communication terminal | Takayuki Taniguchi, Yuriko Tsukahara | 2006-06-06 |
| 6842731 | Prediction parameter analysis apparatus and a prediction parameter analysis method | — | 2005-01-11 |
| 6842732 | Speech encoding and decoding method and electronic apparatus for synthesizing speech signals using excitation signals | — | 2005-01-11 |
| 6704702 | Speech encoding method, apparatus and program | Masahiro Oshikiri, Masami Akamine | 2004-03-09 |
| 6470310 | Method and system for speech encoding involving analyzing search range for current period according to length of preceding pitch period | Masahiro Oshikiri | 2002-10-22 |
| 6427135 | Method for encoding speech wherein pitch periods are changed based upon input speech signal | Masahiro Oshikiri, Tadashi Amada, Masami Akamine | 2002-07-30 |
| 6385576 | Speech encoding/decoding method using reduced subframe pulse positions having density related to pitch | Tadashi Amada | 2002-05-07 |
| 6202046 | Background noise/speech classification method | Masahiro Oshikiri, Masami Akamine | 2001-03-13 |
| 6167375 | Method for encoding and decoding a speech signal including background noise | Masahiro Oshikiri, Tadashi Amada, Masami Akamine | 2000-12-26 |