{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,8,13]],"date-time":"2024-08-13T06:37:49Z","timestamp":1723531069513},"reference-count":35,"publisher":"Association for Computing Machinery (ACM)","issue":"2","license":[{"start":{"date-parts":[[2017,6,30]],"date-time":"2017-06-30T00:00:00Z","timestamp":1498780800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"funder":[{"name":"Georgia Tech Wearable Computing Center Engagement"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Proc. ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2017,6,30]]},"abstract":"The small size of wearable devices limits the efficiency and scope of possible user interactions, as inputs are typically constrained to two dimensions: the touchscreen surface. We present SoundTrak, an active acoustic sensing technique that enables a user to interact with wearable devices in the surrounding 3D space by continuously tracking the finger position with high resolution. The user wears a ring with an embedded miniature speaker sending an acoustic signal at a specific frequency (e.g., 11 kHz), which is captured by an array of miniature, inexpensive microphones on the target wearable device. A novel algorithm is designed to localize the finger\u2019s position in 3D space by extracting phase information from the received acoustic signals. We evaluated SoundTrak in a volume of space (20cm \u00d7 16cm \u00d7 11cm) around a smartwatch, and show an average accuracy of 1.3 cm. We report on results from a Fitts\u2019 Law experiment with 10 participants as the evaluation of the real-time prototype. We also present a set of applications which are supported by this 3D input technique, and show the practical challenges that need to be addressed before widespread use.<\/jats:p>","DOI":"10.1145\/3090095","type":"journal-article","created":{"date-parts":[[2017,6,30]],"date-time":"2017-06-30T18:32:46Z","timestamp":1498847566000},"page":"1-25","update-policy":"http:\/\/dx.doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":41,"title":["SoundTrak"],"prefix":"10.1145","volume":"1","author":[{"given":"Cheng","family":"Zhang","sequence":"first","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Qiuyue","family":"Xue","sequence":"additional","affiliation":[{"name":"Peking University"}]},{"given":"Anandghan","family":"Waghmare","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Sumeet","family":"Jain","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Yiming","family":"Pu","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Sinan","family":"Hersek","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Kent","family":"Lyons","sequence":"additional","affiliation":[{"name":"Technicolor Research"}]},{"given":"Kenneth A.","family":"Cunefare","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Omer T.","family":"Inan","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]},{"given":"Gregory D.","family":"Abowd","sequence":"additional","affiliation":[{"name":"Georgia Institute of Technology"}]}],"member":"320","published-online":{"date-parts":[[2017,6,30]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/ISWC.2012.21"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/2493432.2493515"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1109\/T-C.1970.222973"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/2807442.2807450"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/2501988.2502035"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/2642918.2647396"},{"key":"e_1_2_2_7_1","unstructured":"EPOS. 2007. 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