Hiroyuki EHARA


Design of a Robust LSP Quantizer for a High-Quality 4-kbit/s CELP Speech Coder
Yusuke HIWASAKI Kazunori MANO Kazutoshi YASUNAGA Toshiyuki MORII Hiroyuki EHARA Takao KANEKO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/06/01
Vol. E87-D  No. 6  pp. 1496-1506
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech codingspectral quantizationline spectrum pairsline spectral frequenciessplit vector quantization
 Summary | Full Text:PDF

Noise Post-Processing for Low Bit-Rate CELP Coders
Hiroyuki EHARA Kazutoshi YASUNAGA Koji YOSHIDA Yusuke HIWASAKI Kazunori MANO Takao KANEKO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/06/01
Vol. E87-D  No. 6  pp. 1507-1516
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
CELPbackground noisepost-processingframe erasureITU-T
 Summary | Full Text:PDF

4-kbit/s Multi-Dispersed-Pulse-Based CELP (MDP-CELP) Speech Coder
Hiroyuki EHARA Koji YOSHIDA Kazutoshi YASUNAGA Toshiyuki MORII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2002/02/01
Vol. E85-D  No. 2  pp. 392-401
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
CELP codingspeech codingnoise post-processingbackward adaptive mode switching4-kbit/s
 Summary | Full Text:PDF