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Engineering Brief

Setup and First Experimentation Over an AES67 Over 802.11 Network

Authors: Henry, Mickaël; Aubry, Willy

AES Convention 146 · Paper 510 · March 2019

Abstract

In this paper the AES67 standard tackles the transport of audio data over IP technology. This standard was originally created for audio transmission over local area ethernet networks. However, other types of IP links exist with behavior different from ethernet. This paper investigates the setup and constraints to put on WiFi links to support AES67 transmission. We will show the limits to employ an AES67 stereo audio stream on a Wireless Local Area Network. We will detail the difficulties encountered when setting up an AES67 wireless network. Then we will analyze disruptions brought by wireless networks on device PTP offset, audio packets, and audio PSNR compared to an AES67 ethernet network. We will show the gains brought by the SMPTE 2022-7 redundancy technique.

Details

Published in
AES Convention 146
AES Convention
146
Paper number
510
Publication date
March 6, 2019
Session subject
E-Brief Poster Session 2
Affiliation
Digigram, Montbonnot, France; University of Grenoble, Grenoble, France (See document for exact affiliation information.)
Type
Engineering Brief