TY - GEN
T1 - Instrumental estimation of e-model equipment impairment factor parameters for super-wideband opus codec
AU - Al-Ahmadi, Mohannad
AU - Pocta, Peter
AU - Melvin, Hugh
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - WebRTC includes a set of novel technologies and standards that provide high quality audio, video and arbitrary data exchange. By enabling rich interactivity experience, We-bRTC allows the users to directly interact with use of web and mobile applications without the need for additional plugins. The open standard Opus codec is a default audio codec employed by WebRTC for speech communication and music streaming with a wide range of bitrates supported. This range of bitrates is available for narrowband (300-3400 Hz), wideband (100-7000 Hz) up to super-wideband (50-14000 Hz) audio bandwidths. To estimate a quality experienced by the end user for voice transmission service, E-model standardized in the ITU-T Rec. G.107 (a narrowband version) and the ITU-T Rec. G.107.1 (a wideband version) can be used. With the upcoming extension towards the super-wideband E-model, it will be soon possible to estimate the quality of narrowband, wideband as well as super-wideband speech communication. In this paper, we calculate two codec specific parameters, namely the equipment impairment factor Ie and packet loss robustness Bpl for the super-wideband mode of the Opus codec using the instrumental method. The derived values make it possible to integrate the E-model in realtime communication applications including WebRTC to assess the quality experienced by the end user.
AB - WebRTC includes a set of novel technologies and standards that provide high quality audio, video and arbitrary data exchange. By enabling rich interactivity experience, We-bRTC allows the users to directly interact with use of web and mobile applications without the need for additional plugins. The open standard Opus codec is a default audio codec employed by WebRTC for speech communication and music streaming with a wide range of bitrates supported. This range of bitrates is available for narrowband (300-3400 Hz), wideband (100-7000 Hz) up to super-wideband (50-14000 Hz) audio bandwidths. To estimate a quality experienced by the end user for voice transmission service, E-model standardized in the ITU-T Rec. G.107 (a narrowband version) and the ITU-T Rec. G.107.1 (a wideband version) can be used. With the upcoming extension towards the super-wideband E-model, it will be soon possible to estimate the quality of narrowband, wideband as well as super-wideband speech communication. In this paper, we calculate two codec specific parameters, namely the equipment impairment factor Ie and packet loss robustness Bpl for the super-wideband mode of the Opus codec using the instrumental method. The derived values make it possible to integrate the E-model in realtime communication applications including WebRTC to assess the quality experienced by the end user.
KW - E-model
KW - Opus codec
KW - QoE
KW - Speech coding
KW - WebRTC
UR - https://www.scopus.com/pages/publications/85075943740
U2 - 10.1109/ISSC.2019.8904932
DO - 10.1109/ISSC.2019.8904932
M3 - Conference Publication
AN - SCOPUS:85075943740
T3 - 30th Irish Signals and Systems Conference, ISSC 2019
BT - 30th Irish Signals and Systems Conference, ISSC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th Irish Signals and Systems Conference, ISSC 2019
Y2 - 17 June 2019 through 18 June 2019
ER -