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Springer Handbook of Speech Processing pp 307–330Cite as

Voice over IP: Speech Transmission over Packet Networks

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Abstract

The emergence of packet networks for both data and voice traffic has introduced new challenges for speech transmission designs that differ significantly from those encountered and handled in traditional circuit-switched telephone networks, such as the public switched telephone network (PSTN). In this chapter, we present the many aspects that affect speech quality in a voice over IP (VoIP) conversation. We also present design techniques for coding systems that aim to overcome the deficiencies of the packet channel. By properly utilizing speech codecs tailored for packet networks, VoIP can in fact produce a quality higher than that possible with PSTN.

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Abbreviations

ADPCM:

adaptive differential pulse code modulation

AEC:

acoustic echo cancelation

AGC:

automatic gain control

ARQ:

automatic repeat request

CELP:

code-excited linear prediction

CNG:

comfort noise generation

DPCM:

differential PCM

FEC:

frame erasure concealment

FIFO:

first-in first-out

GSM:

Groupe Spéciale Mobile

IETF:

Internet Engineering Task Force

IP:

internet protocol

ITU:

International Telecommunication Union

LAN:

local-area network

LPC:

linear prediction coefficients

MDC:

multiple description coding

MOS:

mean opinion score

OLA:

overlap-and-add

OSI:

open systems interconnection reference

PCM:

pulse-code modulation

PDA:

pitch determination algorithms

PESQ:

perceptual evaluation of speech quality

PLC:

packet loss concealment

PSTN:

public switched telephone network

QoS:

quality-of-service

RS:

Reed-Solomon

RSVP:

resource reservation protocol

RTP:

real-time transport protocol

SOLA:

synchronized overlap add

TCP:

transmission control protocol

UDP:

user datagram protocol

VAD:

voice activity detector

VoIP:

voice over IP

WLAN:

wireless LAN

WSOLA:

waveform similarity OLA

WiFi:

wireless fidelity

XOR:

exclusive-or

iLBC:

internet low-bit-rate codec

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Author information

Authors and Affiliations

  1. Global IP Solutions, 301 Brannan Street, 94107, San Francisco, CA, USA

    Jan Skoglund Ph.D

  2. School of Electrical Engineering, Sound and Image Processing Laboratory, Royal Institute of Technology (KTH), Osquldas väg 10, 10044, Stockholm, Sweden

    Ermin Kozica M.Sc

  3. Global IP Solutions, 301 Brannan Street, 94107, San Francisco, CA, USA

    Jan Linden Ph.D

  4. Global IP Solutions, Magnus Ladulsgatan 63B, 118 27, Stockholm, Sweden

    Roar Hagen Dr.

  5. School of Electrical Engineering, Sound and Image Processing Lab, Royal Institute of Technology (KTH), Osquldas väg 10, 10044, Stockholm, Sweden

    W. Bastiaan Kleijn Prof.

Authors
  1. Jan Skoglund Ph.D
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  2. Ermin Kozica M.Sc
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  3. Jan Linden Ph.D
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  4. Roar Hagen Dr.
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  5. W. Bastiaan Kleijn Prof.
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Corresponding authors

Correspondence to Jan Skoglund Ph.D , Ermin Kozica M.Sc , Jan Linden Ph.D , Roar Hagen Dr. or W. Bastiaan Kleijn Prof. .

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Editors and Affiliations

  1. INRS-EMT, University of Quebec, 800 de la Gauchetiere Ouest, H5A 1K6, Montreal, Quebec, Canada

    Jacob Benesty Dr.

  2. Avayalabs Research, 233 Mount Airy Road, 07920, Basking Ridge, NJ, USA

    M. Mohan Sondhi Ph.D.

  3. Alcatel-Lucent, Bell Laboratories, 600 Mountain Avenue, 07974, Murray Hill, NJ, USA

    Yiteng Arden Huang Dr.

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Skoglund, J., Kozica, E., Linden, J., Hagen, R., Kleijn, W. (2008). Voice over IP: Speech Transmission over Packet Networks. In: Benesty, J., Sondhi, M.M., Huang, Y.A. (eds) Springer Handbook of Speech Processing. Springer Handbooks. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49127-9_15

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  • DOI: https://doi.org/10.1007/978-3-540-49127-9_15

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-49125-5

  • Online ISBN: 978-3-540-49127-9

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