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Project","award":["2021J01005"],"award-info":[{"award-number":["2021J01005"]}]},{"name":"\u201c111\u2032\u2032 Project","award":["B16029"],"award-info":[{"award-number":["B16029"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In environments where silent communication is essential, such as libraries and conference rooms, the need for a discreet means of interaction is paramount. Here, we present a single-electrode, contact-separated triboelectric nanogenerator (CS-TENG) characterized by robust high-frequency sensing capabilities and long-term stability. Integrating this TENG onto the inner surface of a mask allows for the capture of conversational speech signals through airflow vibrations, generating a comprehensive dataset. Employing advanced signal processing techniques, including short-time Fourier transform (STFT), Mel-frequency cepstral coefficients (MFCC), and deep learning neural networks, facilitates the accurate identification of speaker content and verification of their identity. The accuracy rates for each category of vocabulary and identity recognition exceed 92% and 90%, respectively. This system represents a pivotal advancement in facilitating secure and efficient unobtrusive communication in quiet settings, with promising implications for smart home applications, virtual assistant technology, and potential deployment in security and confidentiality-sensitive contexts.<\/jats:p>","DOI":"10.3390\/s24103007","type":"journal-article","created":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T10:31:16Z","timestamp":1715250676000},"page":"3007","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Flexible Self-Powered Low-Decibel Voice Recognition Mask"],"prefix":"10.3390","volume":"24","author":[{"given":"Jianing","family":"Li","sequence":"first","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yating","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianfeng","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiaoling","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"},{"name":"Jiujiang Research Institute, Xiamen University, Jiujiang 332000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5477-6689","authenticated-orcid":false,"given":"Meidan","family":"Ye","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0791-9023","authenticated-orcid":false,"given":"Wenxi","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Physical Science and Technology, Research Institution for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China"},{"name":"Jiujiang Research Institute, Xiamen University, Jiujiang 332000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"480","DOI":"10.1016\/j.joule.2017.09.004","article-title":"Reviving Vibration Energy Harvesting and Self-Powered Sensing by a Triboelectric Nanogenerator","volume":"1","author":"Chen","year":"2017","journal-title":"Joule"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2101170","DOI":"10.1002\/aenm.202101170","article-title":"Materials Beyond Conventional Triboelectric Series for Fabrication and Applications of Triboelectric Nanogenerators","volume":"11","author":"Khandelwal","year":"2021","journal-title":"Adv. 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