MISSING PACKET RECOVERY TECHNIQUES FOR LOW-BIT-RATE CODED SPEECH

被引：30

作者：

SUZUKI, J ^{[1
]}

TAKA, M ^{[1
]}

机构：

[1] NIPPON TELEGRAPH & TEL PUBL CORP, MUSASHINO ELECT COMMUN LAB, TELECOMMUN NETWORKS LAB, MUSASHINO, TOKYO 180, JAPAN

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 1989年 / 7卷 / 05期

关键词：

Digital Communication Systems--Voice/Data Integrated Services - Pulse Code Modulation;

D O I：

10.1109/49.32334

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：

Since missing-packet recovery techniques for conventional pulse-code modulation (PCM) speech are not applicable to packetized speech communication systems with low-bit-rate coding schemes, quality degradation mechanisms are presented for missing-packet recovery techniques such as least significant bit (LSB) dropping, waveform substitution, and odd-even sample-interpolation schemes, for application to low-bit-rate coded speech. A comparison of these techniques in terms of signal-to-noise ratio and perceptual distortion under packet loss conditions shows that LSB-dropping scheme with embedded coding is the most promising technique for recovering missing packets.

引用

页码：707 / 717

页数：11

共 11 条

[1]

BOWKER DO, 1987, NOV P IEEE GLOBECOM, P1887

[2]

DOVARK CA, 1988, IEEE J SEL AREA COMM, V6, P235

[3] EMBEDDED DPCM FOR VARIABLE BIT RATE TRANSMISSION [J].

GOODMAN, DJ .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1980, 28 (07) :1040-1046

[4] WAVE-FORM SUBSTITUTION TECHNIQUES FOR RECOVERING MISSING SPEECH SEGMENTS IN PACKET VOICE COMMUNICATIONS [J].

GOODMAN, DJ ;

LOCKHART, GB ;

WASEM, OJ ;

WONG, WC .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1986, 34 (06) :1440-1448

[5] ADAPTIVE QUANTIZATION WITH A ONE-WORD MEMORY [J].

JAYANT, NS .

BELL SYSTEM TECHNICAL JOURNAL, 1973, 52 (07) :1119-1144

[6] EFFECTS OF PACKET LOSSES IN WAVEFORM CODED SPEECH AND IMPROVEMENTS DUE TO AN ODD-EVEN SAMPLE-INTERPOLATION PROCEDURE [J].

JAYANT, NS ;

CHRISTENSEN, SW .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1981, 29 (02) :101-109

[7]

SUZUKI J, 1985, JUN P ISCAS 85 KYOT, P325

[8]

WASEM OJ, 1988, IEEE T ACOUST SPEECH, V36

[9]

WONG WC, 1988, ELECTRON LETT, V26

[10]

1988, CCITT SG 18 REP

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