On the ITU-T G.729.1 silence compression scheme

Author

Setiawan, Panji ; Schandl, Stefan ; Taddei, Herve ; Hualin Wan ; Jinliang Dai ; Libin Zhang ; Deming Zhang ; Jun Zhang ; Shlomot, Eyal

Author_Institution

Siemens Enterprise Commun. GmbH & Co. KG, Munich, Germany

fYear

2008

fDate

25-29 Aug. 2008

Firstpage

1

Lastpage

5

Abstract

Silence compression scheme is essential for efficient voice communication systems. It allows a significant reduction of transmission bandwidth during silence period where only parametric descriptions of the background noise are transmitted. A silence compression scheme includes a voice activity detection (VAD), a discontinuous transmission (DTX), a silence insertion descriptor (SID), and a comfort noise generator (CNG) module. In this paper, we describe a silence compression scheme for ITU-T Recommendation G.729.1 which employs a unique scalable SID frame structure. This scalable frame structure consists of a lower band core layer, a lower band enhancement layer, and a higher band layer. The scheme is optimized for ITU-T G.729.1 and is interoperable with ITU-T G.729 Annex B.

Keywords

data compression; speech coding; CNG module; DTX; ITU-T Recommendation G.729.1 silence compression scheme; VAD; background noise transmit- ted; comfort noise generator module; discontinuous transmission; interoperability; lower band core layer; lower band enhancement layer; parametric description; silence insertion descriptor; transmission bandwidth reduction; unique scalable SID frame structure; voice activity detection; voice communication system; Bit rate; Codecs; Noise; Noise measurement; Speech; Speech coding; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2008 16th European

Conference_Location

Lausanne

ISSN

2219-5491

Type

conf

Filename

7080587