Moriya Research Laboratory

  We will pursue supreme audio quality through novel technologies. To enhance the quality of communication and life, we will carry out basic research on high-quality audio signal processing and coding. We are also interested in hardware devices and human perceptual characteristics, as well as in standardization to promote technologies to the world.
Dr.Takehiro Moriya

Research Index

Speech/audio coding

Realistic communication

Publications

  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
  • 2004
  • 2003
  • 2002
  • 2001
  • 2000
  • 1999
  • 1998
  • 1997
  • 1996
  • 1995
  • 1994
  • 1993
  • 1992
  • 1991
  • 1990
  • 1989
  • 1988
  • 1987
  • 1986
  • 1985

2016

Journal Papers

  1. Yoshifumi Shiraki, Yoshiyuki Kabashima, "Typical reconstruction limits for distributed compressed sensing based on ℓ2,1-norm minimization and Bayesian optimal reconstruction: Influences of Noise," in press.

Tutorial Papers and Articles

  1. T. Moriya, R. Sugiura, Y. Kamamoto, H. Kameoka and N. Harada"Progress in LPC-based frequency-domain audio coding,"APSIPA Trans. on Signal and Information Processing, Vol. 5, 2016.

2015

Journal Papers

  1. T. G. Sato, M. Ohsuga, H. Boutani, T. Moriya, "Tactile Phantom Sensation for Coaching Respiration Timing,"IEEE Trans. on Haptics, Vol. 8, No. 1, pp.119 - 125, 2015.
  2. Sugiura, R. ; Kamamoto, Y. ; Harada, N. ; Kameoka, H. ; Moriya, T.," Resolution Warped Spectral Representation for Low-Delay and Low-Bit-Rate Audio Coder,"IEEE/ACM Transactions on Audio, Speech, and Language Processing, Vol. 23, No. 2, pp. 288 - 299, 2015.
  3. Sugiura, R. ; Kamamoto, Y. ; Harada, N. ; Kameoka, H. ; Moriya, T.," Optimal Coding of Generalized-Gaussian-Distributed Frequency Spectra for Low-Delay Audio Coder With Powered All-Pole Spectrum Estimation,"IEEE/ACM Transactions on Audio, Speech, and Language Processing, Vol. 23, No. 8, pp. 1309 - 1321, 2015.
  4. Nava, G.P.; Hoang Duy Nguyen; Kamamoto, Y.; Sato, T.G.; Shiraki, Y.; Harada, N.; Moriya, T.,"A High-Speed Camera-Based Approach to Massive Sound Sensing With Optical Wireless Acoustic Sensors,"IEEE Transactions on Computational Imaging, Vol. 1, Issue 2, pp. 126 - 139, 2015
  5. Yoshifumi Shiraki, Yoshiyuki Kabashima, "Typical reconstruction limits for distributed compressed sensing based on ℓ2,1-norm minimization and Bayesian optimal reconstruction," J. Stat. Mech. ( 2015) P05029
  6. G. Pablo-Nava, H. D. Nguyen, Y. Hioka, Y. Kamamoto, T. G. Sato, Y. Shiraki, T. Moriya, "GPU-based real-time beamforming for large arrays of optical wireless acoustic sensors," Acoustic Science and Technology. Vol. 36, No. 6, pp. 489 - 499, 2015

Peer-reviewed Conference Papers

  1. G. Fuchs, C. R. Helmrich, G. Markovi, M. Neusinger,E. Ravelli, and T. Moriya"LOW DELAY LPC AND MDCT-BASED AUDIO CODING IN THE EVS CODEC,"Proc. ICASSP 2015, pp. 5723 - 5727, 2015.
  2. T. Moriya, Y. Kamamoto, Noboru Harada,T.Backstrom, C. Helmrich,and G.Fuchs."Harmonic Model for MDCT based Audio Coding with LPC Envelope,"Proc. EUSIPCO 2015, AASP-L1.2, pp. 794 - 798, 2015.
  3. T. G Sato, G. Pablo Nava, Y. Shiraki, T. Moriya, “Heart Rate Measurement Based on Event Timing Coding Observed by Video Camera,” ICEVLC2015, 2015. contents
  4. Y, Kamamoto, T. Moriya and N. Harada,"Adaptive selection of lag-window shape for linearpredictive analysis in the 3GPP EVS codec."Proc. GlobalSIP2015, TbEV-L, 2015.

2014

Journal Papers

  1. G. Pablo Nava, Y. Shiraki, H. D. Nguyen, Y. Kamamoto, T. G. Sato, N. Harada,T. Moriya, "Capturing Sound by Light: Towards Massive Channel Audio Sensing via LEDs and Video Cameras," NTT Technical Review, Vol. 12, No. 11, 2014. contens

Tutorial Papers and Articles

  1. T. Moriya, "LSP (Line Spectrum Pair): Essential Technology for High-compression Speech Coding"NTT Technical Review, Vol. 12, No.11, 2014. contents

Peer-reviewed Conference Papers

  1. Yuuki Ooishi, Takashi G. Sato, “Sound presentation during different respiration phases alters the sound-induced sympathetic tone,” FENS Forum of Neuroscience. FENS-0872, 2014.
  2. R. Sugiura, Y. Kamamoto, N. Harada, H. Kameoka and T. Moriya,"Representation of Spectral Envelope with Warped Frequency Resolution for Audio Coder,"Proc. EUSIPCO, 2014.
  3. R. Sugiura, Y. Kamamoto, N. Harada, H. Kameoka and T. Moriya,"Direct Linear Conversion of LSP Parameters for Perceptual Control in Speech and Audio Coding,"Proc. EUSIPCO, 2014.
  4. T. G. Sato, J. Watanabe, T. Moriya, "Synchronization between respiration phase and acoustic feature has effects on affective rating," 15th International Multisensory Research Forum. Poster II-42.2014
  5. T. G. Sato, T. Moriya,"Affective-evaluation difference observed at synchronization between music and respiration cannot be explained by the reaction time of sound change at different respiration phases," 17th World Congress of Psychophysiology (IOP2014).
  6. R. Sugiura, Y. Kamamoto, Noboru Harada, H. Kameoka, and T, Moriya," Golomb-Rice Coding Optimized via LPC for Frequency Domain Audio Coder,"Proc. IEEE GlobalSIP, 2014.

2013

Journal Papers

  1. Y. Kamamoto, T. Moriya, N. Harada, Y. Hiwasaki, "Low-complexity PARCOR coefficient quantizationand prediction order estimation designed for entropy coding of prediction residuals, "Acoustical Science and Technology, Vol. 34, No. 2, pp. 105-112, 2013.
  2. Yutaka Kamamoto, Noboru Harada, Takehiro Moriya, Sunyong Kim, Takahiro Yamaguchi, Masanori Ogawara, and Tatsuya Fujii,"Multichannel Audio Transmission over IP Network by MPEG-4 ALS and Audio Rate Oriented Adaptive Bit-rate Video Codec," NTT Technical Review, Vol.11, No. 7, 2013. contents

Peer-reviewed Conference Papers

  1. T. G. Sato, Y. Kamamoto, N. Harada, T. Moriya, "A Playback System that Synchronizes the Musical Phrases with Listener's Respiration Phases," CHI2013
  2. Y. Shiraki, Y. Kamamoto, T. Moriya, "SIMULTANEOUS RECONSTRUCTION OF UNDERSAMPLED MULTICHANNEL SIGNALS WITH A DECAYED AND TIME-DELAYED COMMON COMPONENT," Proc. in ICASSP 2013.
  3. Pablo Nava G., Kamamoto Y., Sato T. G., Shiraki Y., Harada N., Moriya T., "Image processing techniques for high speed camera-based free-field optical communication ", IEEE Int. Conf. Signal and Image Processing Applications (ICSIPA) 2013.
  4. Pablo Nava G., Kamamoto Y., Sato T. G., Shiraki Y., Harada N., Moriya T., "Simultaneous acquisition of massive number of audio channels through optical means ", In Proc. 135th Convention of the Audio Engineering Society (AES), 2013.

2012

Journal Papers

  1. Takashi G Sato, Yuuki Ooishi, “Sound presentation during different respiration phases alters the sound-induced vasoconstriction mediated by the sympathetic nerve,” Neuroscience Letters, vol. 521, pp. 67-70, 2012.
  2. T. G. Sato, M. Ohsuga, T. Moriya,"Increase in the timing coincidence of a respiration event induced by listening repeatedly to the same music track,"Acoustical Science and Technology, Vol. 33, No. 4 , pp. 255 - 261, 2012.
  3. Y. Kamamoto, T. Moriya, N. Harada,"Low-complexity PARCOR coder designed for entropy coding of prediction residuals,"Acoustical Science and Technology, (letter) Vol. 33, No. 4 , pp. 262 - 265, 2012.

Peer-reviewed Conference Papers

  1. Oshima, T. ; Kamamoto, Y. ; Moriya, T. ; Ono, N. ; Sagayama, S., "Variable-length coding of ACELP gain using Entropy-Constrained VQ", International Symposium on Communications and Information Technologies (ISCIT) 2012, pp. 105 - 109, 2012.

Invited Talks

  1. T. Moriya, "Technologies and Standardization of Speech and Audio Coding", PL-03, Plenary talk, ITC-CSCC2012, 2012.7
  2. T. Moriya,"Speech and Audio Compression and the Standardization", IEICE Tokyo chapter 2012.10

2010

Journal Papers

  1. Yoshifumi Shiraki and Yoshiyuki Kabashima, "Cavity analysis on the robustness of random networks against targeted attacks: Influences of degree-degree correlations," Phys. Rev. E 82, 036101 (2010).

Tutorial Papers and Articles

  1. N. Harada,Y. Kamamoto,T. Moriya, Hendry, H. Sabirin, M. Kim,"Archive and Preservation of Media Contents using MPEG-A, " IEEE Multimedia Magazine, vol. 17, no. 4, pp. 94 - 99, Oct.-Dec., 2010.

Peer-reviewed Conference Papers

  1. N. Harada, Y. Kamamoto, T. Moriya, Y. Hiwasaki, M. A. Ramalho, L. Netsch, J. Stachurski, L. Miao, H. Taddei, F. Qi, "EMERGING ITU-T STANDARD G.711.0 - LOSSLESS COMPRESSION OF G.711 PULSE CODE MODULATION," ICASSP 2010 SP-P5.PA4.
  2. N. Harada, Y. Kamamoto, T. Moriya, "ESCAPED-HUFFMAN AND ADAPTIVE RECURSIVE RICE CODING FOR LOSSLESS COMPRESSION OF THE MAPPED DOMAIN LINEAR PREDICTION RESIDUAL," ICASSP 2010, SP-P5.PA1.
  3. T. Moriya, Y. Kamamoto, N. Harada, "ENHANCED LOSSLESS CODING TOOLS FOR PREDICTION RESIDUAL," ICASSP 2010, SP-P5.PA12.
  4. Y. Kamamoto, T. Moriya, N. Harada, "LOW-COMPLEXITY PARCOR COEFFICIENT QUANTIZER AND PREDICTION ORDER ESTIMATOR FOR LOSSLESS SPEECH CODING," ICASSP 2010 SP-P5.PA9.
  5. N. Harada, Y. Kamamoto, T. Moriya, "Lossless Compression of Mapped Domain Linear Prediction Residual for ITU-T Recommendation G.711.0," DCC 2010, P.532.
  6. T. Moriya, Y. Kamamoto, N. Harada, "Enhanced Lossless Coding Tools of LPC Residual for ITU-T G.711.0," DCC 2010, P.546.
  7. Y. Kamamoto, T. Moriya, N. Harada, "Low-Complexity PARCOR Coefficient Quantizer and Prediction Order Estimator for G.711.0 (Lossless Speech Coding)," DCC 2010, P.475.
  8. N. Harada, Y. Kamamoto, T. Moriya, M. Otsuka, "MPEG-A Professional Archival Application Format and its application for audio data archiving, " 129th AES Convention, 8207, November, 2010.
  9. Y. Kamamoto, N. Harada, T. Moriya, S. Kim, M. Ogawara, T. Fujii, "Experiment of sixteen channel audio transmission over IP network by MPEG-4 ALS and audio rate oriented adaptive bit-rate video codec, " 129th AES Convention, 8302, November, 2010.
  10. F. Zhang, T. Moriya, Y. Kamamoto, S. A. Raczynski, N. Harada, N. Ono, S. Sagayama, "Adaptive Prediction Order Scheme for AMR-WB+, " ISCIT 2010, WM1-2-4, 2010.
  11. T. G. Sato, M. Ohsuga, T. Moriya, "Increase in synchronization of respiration by repeatedly listening to the same piece of music, " ISCIT 2010, FA1-3-3, 2010.

2009

Invited Talks

  1. T. Moriya, "Technologies for Speech and Audio Coding," The 13th IEEE International Symposium on Consumer Electronics, 2009.5.
  2. T. Moriya, "Technologies for speech and audio coding and standardization," IEICE speech comittee, 2009.5.

2008

Journal Papers

  1. Y. Kamamoto, T. Moriya, N. Harada, "Multichannel Linear Prediction MethodCompliant with the MPEG-4 ALS," IEICE. Trans. Fundamentals, Vol. E91-A, No. 3, pp. 756 - 762, 2008.

Peer-reviewed Conference Papers

  1. Y. Kamamoto, N. Harada and T. Moriya, "INTERCHANNEL DEPENDENCY ANALYSIS OF BIOMEDICAL SIGNALS FOR EFFICIENT LOSSLESS COMPRESSION BY MPEG-4 ALS"Proc. ICASSP 2008, #2594, 2008
  2. Y. Kamamoto, N. Harada, T. Moriya, "An efficient lossless compression ofMEG data by MPEG-4 ALS," Proc. 16th International Conference on Biomagnetism(BIOMAG 2008), pp.83.85, Sapporo, Japan, August 2008.
  3. Y. Kamamoto, N. Harada, T. Moriya, "Lossless Compression of BiomedicalSignals by MPEG-4 ALS with Enhanced Encoding Tools," Proc. 2008 IEEEInternationalWorkshop on Multimedia Signal Processing (MMSP 2008), PID-250 (PDF-file), Cairns, Queensland, Australia, October 2008.
  4. N. Harada, T. Moriya, Y. Kamamoto, "An Implementation of MPEG-4 ALSStandard Compliant Decoder on ARM Core CPUs, " AES 121st Convention(Paper #7625), San Francisco, USA, October, 2008.

2007

Journal Papers

  1. T. Moriya, N. Harada, Y. Kamamoto, "Scope of research on high-quality audio signal processing and coding," NTT Technical Review, Vol.5, No. 12, 2007. contents
  2. N. Harada, T. Moriya, Y. Kamamoto, "MPEG-4 ALS: Performance, Application, and other related standardization activities," NTT Technical Review, Vol.5, No. 12, 2007. contents
  3. Y. Kamamoto, T. Moriya, N. Harada, C. Kos, "Enhancement of MPEG-4 ALS lossless audiocoding," NTT Technical Review Vol.5, No. 12, 2007. contents

Peer-reviewed Conference Papers

  1. N. Harada, T. Moriya, and Y. Kamamoto, "MPEG-A Professional Archival Multimedia Application Format (MAF) Under Development,"9-2, 31st AES International Conference, 2007
  2. Y. Kamamoto, N. Harada, and T. Moriya, "A multichannel linear prediction tool forMPEG-4 ALS compliant encoder," 023, AES 13th Regional Convention, Tokyo, 2007.
  3. Y. Kamamoto, N. Harada and T. Moriya, "A Multichannel Linear Prediction Method for the MPEG-4ALS Compliant Encoder," Proc. 2007 IEEE Workshop on Applications of Signal Processing toAudio and Acoustics, WP1-14, 2007.

Invited Talks

  1. T. Moriya, "Latest Technology Trends in MPEG Audio Standards," WS-7 Chair and presentor, AES 13th Regional Convention, Tokyo, 2007.

2006

Journal Papers

  1. T. Moriya, N. Harada, Y.Kamamoto and H. Sekigawa"MPEG-4 ALS: International Standard of Lossless Audio Coding," NTT Technical Review, Vol.4 No. 8, pp. 40 - 45, 2006. contents

Peer-reviewed Conference Papers

  1. T. Moriya, N. Harada, and Y. Kamamoto, "An enhanced encoder for the MPEG-4 ALS lossless codingstandard," Preprint paper #6869, AES 121st Convention Paper, 2006.
  2. T. Moriya, N. Harada and Y. Kamamoto, "Performance-complexity tradeoffs of the MPEG-4 ALS lossless coding standard." WA7a-4, IEEE 40th Asilomar conference, 2006.
  3. N. Harada, T. Moriya, and Y. Kamamoto, "An audioarchiving format based on the MPEG-4 AudioLossless Coding (ALS), " Preprint paper #6895, AES 121st Convention Paper, 2006.

2005

Peer-reviewed Conference Papers

  1. N. Harada, T. Moriya, H. Sekigawa and K. Shirayanagi,"Lossless Compression of IEEE Floating-point Audio using the Approximate-Common-Factor Coding",Preprint paper #6352, 118th Audio Engineering Society Convention, Barcerona, 2005.
  2. T. Liebchen, T. Moriya, N. Harada, Y. Kamamoto and Y. Reznik,"The MPEG-4 Audio Lossless Coding (ALS) Standard Technology and Applications,"Preprint paper #6589, 119th Audio Engineering Society Convention, New York, 2005.

Invited Talks

  1. T. Moriya, "Coding Technologies for Speech and Audio Signals", Keynote Speech, ISPACS 2005, 2005.12

2004

Peer-reviewed Conference Papers

  1. T. Moriya, D. Yang and T. Liebchen,"A design of lossless compression for high quality audio signals," Proceedings of ICA (International Congress on Acoustics), 2004.
  2. D. Yang, T. Moriya and T. Liebchen, "A Lossless Audio Compression Scheme with Random Access Property," Proceedings of ICASSP 2004, pp. III-1016 - 1019, 2004.
  3. T. Moriya, D. Yang and T. Liebchen, "Extended Linear Prediction Tools for Lossless Audio Coding," Proceedings of ICASSP 2004, pp. III-1008 - 1011, 2004.
  4. T. Liebchen, Y. Reznik, T. Moriya and D. Yang,"MPEG-4 Audio Lossless Coding," Preprint paper #6047, 116th Audio Engineering Society Convention, Berlin, 2004.

2003

Journal Papers

  1. T. Moriya, A. Jin, T. Mori, K.Ikeda and T. Kaneko,"Lossless scalable audio coding and quality enhancement," IEICE Trans. InF. & SYST. Vol. E86-D, No. 3 pp. 425 - 429, 2003.
  2. A. Jin, T. Moriya, K. Ikeda and D. Yang, "A hierarchical Lossless/lossycoding system for high quality audio up to 192 kHz 24 bit format," IEEETrans. Consumer Electronics, Vol. 23, No. 3, pp. 759 - 764, 2003.

Peer-reviewed Conference Papers

  1. T. Moriya, A. Jin, K. Ikeda, T. Mori and T. Kaneko, "Hierarchical LosslessAudio Coding in Terms of Sampling Rate and Amplitude Resolution," Proc.ICASSP 2003, 2003.4
  2. A. Jin, T. Moriya, K. Ikeda and D. Yang, "A Hierarchical Lossless/lossyCoding System for High Quality Audio Up to 192 kHz Sampling 24 BitFormat," IEEE Conference on Consumer Electronics, 2003.6
  3. D. Yang and T. Moriya, "Lossless Compression for Audio Sources with IEEEFloating Point Format" Preprint 115th Audio Engineering SocietyConvention, #5987, 2003.
  4. D. Yang, T. Moriya, A. Jin and K. Ikeda, "An Extended Run-length Cording Toolfor Audio Compression," Preprint 115th Audio Engineering SocietyConvention, #5979, 2003.

2002

Peer-reviewed Conference Papers

  1. T. Moriya, A. Jin, T. Mori, K. Ikeda, T. Kaneko, "Lossless scalable audiocoder and quality enhancement," ICASPP'2002, #2440, 2002
  2. T. Moriya, A. Jin, K. Ikeda, T. Mori and T. Kaneko, "Sampling Rate ScalableLossless Audio coding," Proc. IEEE Speech Coding workshop, 2002.10

Invited Talks

  1. T. Moriya, "Speech and Audio Coding and Standardization", Lecture at IEEE Tokyo Chapter , 2002.6

2001

Peer-reviewed Conference Papers

  1. N. Iwakami, T. Moriya, A. Jin, T. Mori "Fast Encoding Algorithms for MPEG-4TwinVQ Audio Tool," Proc. ICASSP, 2001
  2. N. Iwakami, T. Moriya, A. Jin, T. Mori "Fast Encoding Algorithms for MPEG-4TwinVQ Audio Tool," MPEG-4 workshop, 2001

2000

Journal Papers

  1. T. Mori, T. Kaneko, T. Moriya, N. Iwakami and K. Ikeda, "Realtime IMT-2000 audio transmission system,'' IEEE Trans. Consumer Electronics, Vol. 46, 2000.
  2. T. Takahashi, H. Morita, T. Kaneko, and T. Moriya, "Card-size portable audio player "SolidAudio" using high quality audio coding technology: TwinVQ,"IEEE Trans. Consumer Electronics, Vol. 46, 2000.

Peer-reviewed Conference Papers

  1. T. Moriya, T. Mori, A. Jin and N. Iwakami, "A design of error-robust scalable coder based on MPRG-4/audio," Proc. ISCAS'2000, pp. , 2000.
  2. T. Moriya, N. Iwakami, T. Mori, and A. Jin, "A Design of Lossy and Lossless Scalable Audio Coder, "Proc. ICASSP'2000, pp. AE-P1.11, 2000.

1999

Tutorial Papers and Articles

  1. H. Watanabe, S. Takamura, and T. Moriya, Next-generation Multi-media CodingStandard: MPEG-4," NTT Review, Vol. 11, No. 6, pp. 73 - 74, 1999.10.

Peer-reviewed Conference Papers

  1. A. Jin, T. Moriya, T. Norimatsu, M. Tsushima and T. Ishikawa, "Scalable Audio Coder Based on Quantization Units of MDCT Coefficients,'' Proc. ICASSP'99, pp. II-897 -- 900, 1999.

1998

Journal Papers

  1. R. Salami, C. Laflamme, J.P. Adoul,A. Kataoka, S. Hayashi, T. Moriya, C. Lamblin, D, Massaloux, S. Proust, P. Kroon, and Y. Shoham, "Design and Description of CS-ACELP: A Toll Quality 8kb/s Speech Coder,''IEEE Trans. Speech and Audio Processing, Vol. 6, No. 2, pp. 116 - 130, 1998.
  2. K. Ikeda, T. Mori, T. Moriya, N. Iwakami and T. Kaneko, "Audio Transfer System on PHS Using Error Protected TwinVQ, ''IEEE Trans. Consumer Electronics, Vol. 44, pp.1032-1038, 1998.
  3. K. Ikeda, T. Mori, T. Moriya and T.kaneko, "A Real-time PHS Music Delivery System,''NTT Review, Vol. 10, No. 5, pp.143-147, 1998.
  4. N.Kitawaki, T. Moriya, T. Kaneko and N. Iwakami, "Comparison of Two Speech and Audio Coders at 8 kbit/s from the view point of Coding Scheme and Quality,'' IEICE Trans. Commun., Vol. E81-B, No.11, pp. 2007-2012, 1998.

Peer-reviewed Conference Papers

  1. J. Herre, E. Allamanche, K. Brandenburg, M. Dietz, B. Teichmann, B. Grill,A. Jin, T. Moriya, N. Iwakami, T. Norimatsu, M. Tsushima, T. Ishikawa,"The integrated Filterbank Based Scalable MPEG-4 Audio Coder,''105th Convention Audio Engineering Society, 4810, 1998.

1997

Peer-reviewed Conference Papers

  1. T. Moriya, N. Iwakami, A. Jin, K. Ikeda, and S. Miki, "A Design of Transform Coder for Both Speech and Audio Signals at bit/sample,'' Proc. ICASSP'97, pp. 1371 - 1374, 1997.
  2. T. Moriya, Y. Takashima, T. Nakamura and N. Iwakami, "Digital Watermark based on Vector Quantization,''Proc. IEEE Speech Coding Workshop, pp. 94 - 95, 1997.

1996

Journal Papers

  1. A. Kataoka, S. Kurihara, S. Hayashi and T. Moriya, "Improved CELP-Based Coding in a Noisy Environment Using a Trained Sparse Conjugate Codebook,''IEICE Trans. Information and system, vol. E79-D, No. 2, pp. 123-129, 1996.
  2. A. Kataoka, S. Hayashi, T. Moriya S. Kurihara and K. Mano, "Basic Algorithm of Conjugate-structure Algebraic CELP(CS-ACELP)Speech Coder,''NTT Review, Vol. 8. No. 4, pp. 24-29, 1996.
  3. A. Kataoka, T. Moriya, J. Ikedo and S. Hayashi, "LSP and Gain Quantization for CS-ACELP Speech Coder,''NTT Review, Vol. 8. No. 4, pp. 30-35, 1996.
  4. S. Hayashi, A. Kataoka, T. Moriya and T. Kaneko, "Speech Quality Assessment,''NTT Review, Vol. 8. No. 4, pp. 36-41, 1996.
  5. T. Kaneko, A. Kataoka, S. Hayashi and T. Moriya, "CS-ACELP Speech Coding Board and Application Systems,''NTT Review, Vol. 8. No. 4, pp. 42-47, 1996.
  6. A. Kataoka, T. Moriya and S. Hayashi, "An 8 kbit/s Conjugate Structure CELP (CS-CELP) Speech Coder,'' IEEE Trans. Speech and Audio Processing, vol. 4, No. 6, pp. 401-411, 1996.

Peer-reviewed Conference Papers

  1. N. Iwakami and T. Moriya, "Transform Domain Weighted Interleave Vector Quantization (TwinVQ),''Proc. 101st AES convention, 4377, 1996.
  2. H. Ohmuro, J. Ikedo, T. Moriya, A. Kataoka, S. Hayashi and K. Mano, "Dual-pulse CS-CELP: A Toll Quality Low-complexity Speech Coder at 7.8 kbit/s,''Proc. ICASSP'96, pp. 558-561, 1996.
  3. T. Moriya, N. Iwakami, K. Ikeda and S. Miki, "Extension and Complexity Reduction of TWINVQ Audio Coder,''Proc. ICASSP'96, pp. 1029--1032, 1996.

1995

Journal Papers

  1. K. Mono, T. Moriya, S. Miki, H. Ohmuro, K. Ikeda and J. Ikedo, "Design of a Pitch Synchronous Innovation CELP Coder for Mobile Communications,''IEEE JSAC. Vol.13, No.1, pp.31-41, 1995.

Peer-reviewed Conference Papers

  1. A. Kataoka, S. Hosaka, J. Ikedo, T. Moriya and S. Hayashi, "Improved CS-CELP Speech Coding in a Noisy Environment Using a Trained Sparse Conjugate Codebook,''Proc. ICASSP'95, pp. 29-32, 1995.
  2. N. Iwakami, T. Moriya and S. Miki, "High quality Audio Coding at less than 64 kbit/s Using TwinVQ,''Proc. ICASSP'95, pp. 937-940, 1995.
  3. K. Ikeda, T. Moriya, N. Iwakami and S. Miki, "Error Protected TwinVQ Audio Coding at less than 64 kbit/s,''Proc. IEEE Speech Coding Workshop, pp. 33-34, 1995.
  4. T. Moriya, "Processing of LPC Cepstrum for Speech Coding,''Proc. IEEE Speech Coding Workshop, pp. 83-84, 1995.
  5. K. Mano and T. Moriya, "Improved 4 kbit/s PSI-CELP Coding Using Pitch and Phase Adaptation,''Proc. IEEE Speech Coding Workshop, pp. 41-42, 1995.
  6. S. Sasaki, A. Kataoka and T. Moriya, "Wideband CELP Coder at 16 kbit/s with 10 ms Frame,''Proc. EROSPEECH,95, pp. 41-44, 1995.
  7. K. Ikeda, T. Moriya, N. Iwakami and S. Miki, "A Design of TwinVQ Audio-Codec for Personal Communication System,''Proc. ICUPC'95, pp. 803--807, 1995.

1994

Journal Papers

  1. T. Moriya, T. Kaneko and N. Kitawaki, "PSI-CELP Speech Coder for Mobile Communication,"NTT Review, vol. 6, No.1 , pp. 97-100, 1994.
  2. S. Hayashi, A. Kataoka and T. Moriya, "8 kbit/s Short and Medium Delay Speech Codecs Based on CELP Coding,''European Transactions on Telecommunications, vol. 5, No. 5, pp. 49-56, 1994.
  3. S. Miki, T. Moriya, K. Mano and H. Ohmuro, "Basic Algorithm of Pitch Synchronous Innovation CELP (PSI-CELP)Speech Coding,''NTT Review, vol. 6, no. 6, pp. 53-60, 1994.

Peer-reviewed Conference Papers

  1. A Kataoka, T. Moriya and S. Hayashi, "Implementation and Performance of an 8 kbit/s Conjugate Structure CELP Speech Coder,''Proc. ICASSP'94, pp. II-93 - II-96, 1994.
  2. S. Miki, K. Mano, T. Moriya, K.Oguchi and H. Ohmuro, "Pitch Synchronous Innovation CELP (PSI-CELP) Coder for 2-4 kbit/s,''Proc. ICASSP'94, pp. II-113 - II-116, 1994.
  3. H. Ohmuro, K. Mano and T. Moriya, "Variable Bit-rate Speech Coding based on PSI-CELP,''Proc. ICSLP'94, pp. 2067-2070, 1994.

1993

Book Chapter

  1. A. Kataoka and T. Moriya, "Low Delay Speech Coder at 8 kbit/s withConditional Pitch Prediction, Speech and Audio Coding for Wireless andNetwork Application, Kluwer Academic Publishers, pp.11--18, 1993.
  2. N. Phamdo, N. Farvardin and T. Moriya, "Combined Source-Channel Coding of LSPParameters Using Multi-stage Vector Quantization,'' Speech and Audio Codingfor Wireless and Network Application, Kluwer Academic Publishers,pp.181-190, 1993.

Journal Papers

  1. N. Phamdo, N. Farvardin and T. Moriya, "A Unified Approach to Tree-Structured and Multi-StageVector Quantization for Noisy Channels,"IEEE Trans. IT, vol. 39, No. 3, pp. 835-850, 1993.
  2. T. Moriya, K. Mano, S. Miki and H. Ohmuro, "Pitch Synchronous Innovation CELP(PSI-CELP),'' (letter), IEICE Trans. Fundamentals, Vol. E76-A, No. 7, pp.1177-1180, 1993.
  3. H. Ohmuro, T. Moriya, K. Mano and S. Miki, "Coding of LSP Parameters UsingInterframe Moving Average Prediction and Multi-stage Vector Quantization,''(letter), IEICE Trans. Fundamentals, Vol. E76-A, No. 7, pp. 1181-1183, 1993.

Peer-reviewed Conference Papers

  1. S. Miki, K. Mano, H. Ohmuro and T. Moriya, "Pitch Synchronous Innovation CELP (PSI-CELP,''Proc. EuroSpeech'93, pp.261--264, 1993.
  2. T. Moriya, S. Miki, K. Mono and H. Ohmuro, "Training Method of the Excitation Codebook for CELP,''Proc. EuroSpeech'93, pp.1151-1154, 1993.
  3. A. Kataoka, T. Moriya and S. Hayashi, Conjugate Structure CELP Coder for the CCITT 8kbit/s Standardization Candidate,''Proc. IEEE Speech Coding Workshop, pp. 25-26, 1993.
  4. K. Mano, T. Moriya, S. Miki and H. Ohmuro, "Design of PSI-CELP Coder for Mobile Communication, ''Proc. IEEE Speech Coding Workshop, pp.21-22, 1993.
  5. H. Ohmuro, T. Moriya, K. Mano and S. Miki, "Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-stage Vector Quantization,''Proc. IEEE Speech Coding Workshop, pp. 63-64, 1993.
  6. A. Kataoka, T. Moriya and S. Hayashi, "Conjugate Structure CELP (CS-CELP) Speech Coder at 8 kbit/s, ''Proc. first International Workshop on Mobile Multimedia Communication, pp. B.2.2-1 B.2.2-4, 1993.
  7. S. Sasaki, A. Kataoka, and T. Moriya, "16 kbit/s Wideband Speech CELP Coder Using Conjugate Structure. "Proc. first International Workshop on Mobile Multimedia Communication, pp. B.2.3-1 B.2.3-4, 1993.

1992

Journal Papers

  1. T. Moriya, "Two-channel Conjugate Vector Quantizer for Noisy Channel Speech Coding,''IEEE, JSAC, vol. 10, No. 5, pp. 866-874, 1992.

1991

Book Chapter

  1. H. Suda, T. Moriya and T. Miki, "An Error Protected Transform Coder for Cellular Mobile Radio,'' Advances in Speech Coding,Kluwer Academic Publishers, pp. 81-86, 1991.

Peer-reviewed Conference Papers

  1. T. Moriya and A. Kataoka, "8 kbit/s Low-delay CELP speech Coding Algorithm,''Proc. IEEE Speech Coding Workshop, pp. 5-6, 1991.
  2. N. Phamdo, N. Farvardin and T. Moriya, "Combined Source-channel Coding of LSP Parameters Using Multi-stageVector Quantization,''Proc. IEEE Speech Coding Workshop, pp. 36-38,1991.
  3. A. Kataoka and T. Moriya, "A Backward Adaptive 8 kbit/s SpeechCoder using Conditional Pitch Prediction,''Proc. IEEE, Globecom, pp.1889--1893, 1991.

1990

Peer-reviewed Conference Papers

  1. K. Mano and T. Moriya, "4.8 kbit/s Delayed Decision CELP Coder Using Tree Coding,''Proc. ICASSP'90, pp. 21-24, 1990.
  2. T. Moriya, "Medium-delay 8 kbit/s Speech Coder Based on Conditional Pitch Prediction,''Proc. ICSLP'90, pp. 653 - 656, 1990.
  3. T. Ohya, T. Miki, H. Suda, S. Uebayashi, T. Moriya, "Design of TC-WVQ Real Time Operation Codec,''Proc. ICSLP'90, pp. 125 - 128, 1990.

1989

Peer-reviewed Conference Papers

  1. T. Moriya and H. Suda, An 8 kbit/s Transform Coder for Noisy Channels,''Proc.ICASSP'89, pp.196-199, 1989.
  2. H. Suda, T. Moriya and T. Miki, "An Error Protected 8 kbit/s Transform Coder for Land Mobile Radio,''Proc IEEE Speech Coding Workshop, pp .9-10, 1989.

1988

Journal Papers

  1. T. Moriya and M. Honda, "Transform Coding of Speech Using a Weighted Vector Quantizer,"IEEE, JSAC, vol. 6, No. 2, pp. 425-431, 1988.

Peer-reviewed Conference Papers

  1. T. Moriya, "Design of Robust Conjugate Vector Quantization Codebooks for Noisy Channels,'' Proc. ISIT'88, 1988.

1987

Peer-reviewed Conference Papers

  1. T. Moriya and M. Honda, "Transform Coding of Speech with Weighted Vector Quantization,''Proc. ICASSP'87, pp. 1629-1632, 1987.

1986

Journal Papers

  1. T. Moriya and M. Honda, "Adaptive Transform Coding of Speech by Means of Vector Quantization,"Review of ECL, NTT, vol .34, No. 1, pp. 87-95, 1986.

Peer-reviewed Conference Papers

  1. T. Moriya and M. Honda, "Speech Coder Using Phase Equalization and Vector Quantization,'' Proc. ICASSP'86, pp. 1701-1704, 1986.

1985

Peer-reviewed Conference Papers

  1. M. Honda and T. Moriya,"Medium Band Waveform Coding of Speech Signals based on Short-time Phase Equalization,''Proc. JASA, Vol. 77, 1985.2.

Members

Access