Quantitatively measuring the audio characteristics of IoT (Internet of Things) smart speakers presents several novel challenges. We discuss overcoming the practical challenges of testing such devices and demonstrate how to measure frequency response, distortion, and other common audio characteristics. In order to make these measurements, several measurement techniques and algorithms are presented  that allow us to move past the practical difficulties presented by this class of emerging audio devices. We discuss test equipment requirements, selection of test signals, and especially overcoming the challenges around injecting and extracting test signals from the device.

Authors: Hess, Glenn; Knighten, Daniel
Affiliations: Indy Acoustic Research LLC, Indianapolis, IN, USA; Listen, Inc., Boston, MA, USA(See document for exact affiliation information.)
AES Convention: 143 (October 2017) Paper Number: 9902
Publication Date: October 8, 2017 Import into BibTeX
Subject: Applications in Audio
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=19299

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