Hitoshi OHMURO

Adaptive Spectral Masking of AVQ Coding and Sparseness Detection for ITU-T G.711.1 Annex D and G.722 Annex B Standards
Masahiro FUKUI Shigeaki SASAKI Yusuke HIWASAKI Kimitaka TSUTSUMI Sachiko KURIHARA Hitoshi OHMURO Yoichi HANEDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/05/01
Vol. E97-D  No. 5  pp. 1264-1272
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech and audio coding, standardization, ITU-T G.711.1 Annex D, ITU-T G.722 Annex B, super-wideband (SWB) extension, algebraic vector quantization (AVQ), 
 Summary | Full Text:PDF(916.3KB)
A G.711 Embedded Wideband Speech Coding for VoIP Conferences
Yusuke HIWASAKI Hitoshi OHMURO Takeshi MORI Sachiko KURIHARA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/09/01
Vol. E89-D  No. 9  pp. 2542-2552
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
wideband speech, VoIP, G.711, scalable coding, MCU, partial mixing, transcoding, 
 Summary | Full Text:PDF(777.9KB)
Pitch Synchronous Innovation CELP (PSI-CELP)
Takehiro MORIYA Satoshi MIKI Kazunori MANO Hitoshi OHMURO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/25
Vol. E76-A  No. 7  pp. 1177-1180
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
Category: 
Keyword: 
speech coding, CELP, pitch-synchronous-innovation, cellular radio, 
 Summary | Full Text:PDF(230.7KB)
Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization
Hitoshi OHMURO Takehiro MORIYA Kazunori MANO Satoshi MIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/25
Vol. E76-A  No. 7  pp. 1181-1183
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
Category: 
Keyword: 
speech coding, LSP, vector quantization, CELP, interframe correlation, mobile telephone, cellular radio, 
 Summary | Full Text:PDF(235.3KB)