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.

Authors: Henry, Mickaël; Aubry, Willy
Affiliations: Digigram, Montbonnot, France; University of Grenoble, Grenoble, France(See document for exact affiliation information.)
AES Convention: 146 (March 2019) eBrief:510
Publication Date: March 10, 2019
Subject: E-Brief Poster Session 2

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