Overview of the EVS codec architecture

Author

Dietz, Martin ; Multrus, Markus ; Eksler, Vaclav ; Malenovsky, Vladimir ; Norvell, Erik ; Pobloth, Harald ; Lei Miao ; Zhe Wang ; Laaksonen, Lasse ; Vasilache, Adriana ; Kamamoto, Yutaka ; Kikuiri, Kei ; Ragot, Stephane ; Faure, Julien ; Ehara, Hiroyuki ;

fYear

2015

fDate

19-24 April 2015

Firstpage

5698

Lastpage

5702

Abstract

The recently standardized 3GPP codec for Enhanced Voice Services (EVS) offers new features and improvements for low-delay real-time communication systems. Based on a novel, switched low-delay speech/audio codec, the EVS codec contains various tools for better compression efficiency and higher quality for clean/noisy speech, mixed content and music, including support for wideband, super-wideband and full-band content. The EVS codec operates in a broad range of bitrates, is highly robust against packet loss and provides an AMR-WB interoperable mode for compatibility with existing systems. This paper gives an overview of the underlying architecture as well as the novel technologies in the EVS codec and presents listening test results showing the performance of the new codec in terms of compression and speech/audio quality.

Keywords

3G mobile communication; audio coding; codecs; video coding; 3GPP codec; AMR-WB interoperable mode; EVS codec architecture; enhanced voice services; full-band content; low-delay real-time communication systems; packet loss; speech-audio quality; switched low delay speech/audio codec; Bit rate; Codecs; Delays; Speech; Speech coding; Switches; audio coding; mobile communication; speech coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on

Conference_Location

South Brisbane, QLD

Type

conf

DOI

10.1109/ICASSP.2015.7179063

Filename

7179063