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Convention Paper

Comparison of Audio Quality of Teleconferencing Applications Using Subjective Test

Authors: Faadhilah, Avelia Fairuz; Elfitri, Ikhwana

AES Convention 152 · Paper 10564 · May 2022

Abstract

The human need to communicate and connect during the Covid-19 pandemic has led to the increasing use of
teleconferencing applications. Users naturally pay attention to audio quality in choosing a teleconference application
from many available and easily accessible applications. Audio quality is partly affected by the audio coding method
used and developed on the application and the noise introduced within the network. This work evaluates the
audio quality of 5 popular teleconferencing applications using the subjective test. For complement, objective tests
and Signal-to-Noise Ratio (SNR) assessments are also carried out. The standard used for the subjective test is
ITU-R BS.1116-3: Methods for the Subjective Assessment of Small Impairments in Audio Systems, which aims
to identify small differences between audio quality. The assessment is conducted by comparing the original and compressed audio. The original audio is recorded from the speaker side, while the compressed audio is recorded from the receiver side. Both are assessed using the subjective test method by 20 subjects. The assessment results of each audio teleconferencing application are different, even though some applications use the same codec. We also found that one of the most popular applications tends to have the lowest average score among the tested audio applications.

Details

Published in
AES Convention 152
AES Convention
152
Paper number
10564
Publication date
May 6, 2022
Session subject
Sound Quality & Perception
Affiliation
Department of Electrical Engineering, Faculty of Engineering, Universitas Andalas, Padang, Indonesia (See document for exact affiliation information.)
Type
Convention Paper