Publication detail

Design of recommendation G.722 audiocodec for ISDN application. International journal

ŠKORPIL, V. PROCHÁZKA, T.

Original Title

Design of recommendation G.722 audiocodec for ISDN application. International journal

Type

journal article - other

Language

English

Original Abstract

Recommendation G.722 describes the potentials of encoding and decoding audio signals with 50-7000 Hz bandwidth using SB-ADPCM (Sub-Band Adaptive Differential Pulse Code Modulation). Thus a bit rate compression is accomplished. Utilization for ISDN, DECT and CT2 cordless phones and other applications is assumed. The paper gives the basic G.722 recommendation modes and the principles of SB-ADPCM encoder and decoder including theoretical equations and problem algorithmization theory. The simulation of G.722 codec is performed by the Matlab software. Examples of the testing signals passing through the designed codec are shown. In conclusion the results are discussed.

Keywords

G.722, SB-ADPCM, Matlab

Authors

ŠKORPIL, V.; PROCHÁZKA, T.

RIV year

2002

Released

10. 12. 2002

ISBN

1213-161X

Periodical

ElectronicsLetters.com - http://www.electronicsletters.com

Year of study

2002

Number

5/12/2002

State

Czech Republic

Pages from

1

Pages to

10

Pages count

10

URL

http://www.electronicletters.com

BibTex

@article{BUT40856,
  author="Vladislav {Škorpil} and Tomáš {Procházka}",
  title="Design of recommendation G.722 audiocodec for ISDN application. International journal",
  journal="ElectronicsLetters.com - http://www.electronicsletters.com",
  year="2002",
  volume="2002",
  number="5/12/2002",
  pages="10",
  issn="1213-161X",
  url="http://www.electronicletters.com"
}