In VoIP audio conferencing, hearing is done over handsets or headphones, so through one or two ears. In order to keep the same loudness perception between the two modes, a listener can only tune the sound level. The goal of this paper is to show that monaural or diotic hearing has a quality impact on speech processed by VoIP coders. It can increase or decrease the differences in perceived quality between tested coders and even change their ranking according to the sound level. This impact on the ranking of the coders will be explained thanks to the normal equal-loudness-level contours over headphones and the specifics of some coders. It is important to be aware of the impact of the hearing system and its associated sound level.

Authors: Nagle, Arnault; Quinquis, Catherine; Sollaud, Aurelien; Battistello, Anne; Slock, Dirk
Affiliations: Institut Eurecom; France Telecom Research and Development(See document for exact affiliation information.)
AES Convention: 123 (October 2007) Paper Number: 7220
Publication Date: October 1, 2007 Import into BibTeX
Subject: Audio Coding
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=14278

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 123Papers)   /123/7220.pdf

Start a discussion about this paper!