AES E-Library

Objective Measurements of Sound Source Localization in a Multichannel Transmission System for Videoconferencing

In videoconference systems formed by microphone and loudspeaker arrays, the sound field reproduced in the receiving room must be as similar as possible to the sampled field by the microphone array (according to the wave field synthesis). Different measurements of objective and subjective quality can be made. A measurement method has been developed based on spatial localization in the horizontal plane. Two different situations have been compared: first, a real source placed at different azimuth angles in front of the listener; second, the virtual source created by the loudspeaker array. Interpolated HRTFs have been calculated according to several methods and in order to determine the azimuth angle the cross correlation function (IACC) and the interaural time difference (ITD) have been evaluated.

Authors: Torres-Guijarro, Soledad; Gomez-Alfageme, Juan Jose; Blanco-Martin, Elena; Casajus-Quiros, F. Javier
Affiliations: Dpto. Ingeniería Audiovisual y Comunicaciones, Universidad Politécnica Madrid, Spain ; Dpto. Señales, Sistemas y adiocomunicaciones, Universidad Politécnica Madrid, Spain(See document for exact affiliation information.)
AES Convention:116 (May 2004) Paper Number:6065 Import into BibTeX
Session Subject:Spatial Perception; Processing and Analysis and Synthesis of Sound

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 116Papers)   /116/6065.pdf

Start a discussion about this paper!