Techniques of very low bit-rate speech coding

被引：0

作者：

Cui, HJ ^{[1
]}

Tang, K ^{[1
]}

Zhao, M ^{[1
]}

Zhang, X ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Elect Engn, State Key Lab Microwave & Digital Commun, Beijing 100084, Peoples R China

来源：

CHINESE JOURNAL OF ELECTRONICS | 2004年 / 13卷 / 01期

关键词：

multi-frame; multi-sub-band; multimodel; vocoder; linear prediction; vector quantization;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Techniques of very low bit-rate speech coding, such as lower than 800 bps are presented in this paper. The techniques of multi-frame, multi-sub-band, multi-model, and vector quantization etc. are effective to decrease the bit-rate of vocoders based on a linear prediction model. These techniques bring the vocoder not only high quality of the reconstructed speech, but also robustness. Vocoders which apply those techniques can synthesize clear and intelligent speech with some naturalness. The mean DRT (Diagnostic rhyme test) score of an 800 bps vocoder is 89.2% and 86.3% for a 600 bps vocoder.

引用

页码：63 / 65

页数：3

共 50 条

[31] Improving low bit-rate coding
Rumsey, Francis
[J]. AES: Journal of the Audio Engineering Society, 2010, 58 (12): : 1116 - 1121
[32] IMPROVING LOW BIT-RATE CODING
Rumsey, Francis
[J]. JOURNAL OF THE AUDIO ENGINEERING SOCIETY, 2010, 58 (12): : 1116 - 1121
[33] Corpus based very low bit rate speech coding
Baudoin, G
El Chami, F
[J]. 2003 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL I, PROCEEDINGS: SPEECH PROCESSING I, 2003, : 792 - 795
[34] Very low bit rate speech coding based on HMMs
[J]. Hiroi, J, 1600, John Wiley and Sons Inc. (32):
[35] Very low bit rate speech coding in tandem connections
de Lamare, RC
Alcaim, A
[J]. ELECTRONICS LETTERS, 2003, 39 (18) : 1356 - 1357
[36] Novel Low-Band Phase Representation for Low Bit-Rate Speech Coding
Ismail, Ahmed
Dakroury, Yasser
Abbas, Hazem
[J]. INTERSPEECH 2007: 8TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION, VOLS 1-4, 2007, : 1277 - +
[37] A bit-rate control method for low bit-rate video coding based on high bit-rate period emphasis
Nishio, K
Tanaka, A
Yamamoto, N
Kanada, Y
Yamamoto, R
[J]. IEEE SOUTHEASTCON '99, PROCEEDINGS, 1999, : 92 - 97
[38] Low bit-rate speech coding by perceptually optimized noise excitation modulation
Tsoukalas, D
Mourjopoulos, J
Kokkinakis, G
[J]. SIGNAL PROCESSING, 1997, 56 (01) : 77 - 89
[39] MORPHOLOGICAL SHAPE REPRESENTATION FOR VERY-LOW BIT-RATE VIDEO CODING
BRIGGER, P
KUNT, M
[J]. SIGNAL PROCESSING-IMAGE COMMUNICATION, 1995, 7 (4-6) : 297 - 311
[40] Recent and current research on very low bit-rate video coding in Japan
Kaneko, M
[J]. IEICE TRANSACTIONS ON COMMUNICATIONS, 1996, E79B (10) : 1415 - 1424

← 1 2 3 4 5 →