For acoustical long-term measurements based on ecological momentary assessment (EMA), we needed a solution for sending A2DP audio data to an Android smartphone. Due to Android’s software limitations, the common smartphones cannot act as the necessary sink for stereo audio. Our innovation is a wearable Bluetooth device containing a wireless transmission unit with two microphones connected to a Nexus 5 smartphone. The Nexus 5 platform was chosen, since Google performed tests featuring an Android-powered car audio system, which enables a stereo Bluetooth sink. The proposed open hardware and software solution can be used for several audio application areas, where non-intrusive long-term observations are necessary, e.g., noise exposure dosimeters.

Authors: Groenewold, Holger; Franz, Sven; Holube, Inga; Bitzer, Jörg
Affiliation: Jade University of Applied Sciences, Oldenburg, Germany
AES Convention: 144 (May 2018) eBrief:441
Publication Date: May 14, 2018
Subject: e-Brief Posters—2

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