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Speech sensor networks, an important part of the Internet of Things, have numerous application needs. Indeed, the sensor data can further help intelligent applications to provide higher quality services, whereas this data may involve considerable noise data. Accordingly, speech signal processing method should be urgently implemented to acquire low\u2010noise and effective speech data. Blind source separation and enhancement technique refer to one of the representative methods. However, in the unsupervised complex environment, in the only presence of a single\u2010channel signal, many technical challenges are imposed on achieving single\u2010channel and multiperson mixed speech separation. For this reason, this study develops an unsupervised speech separation method CNMF+JADE, i.e., a hybrid method combined with Convolutional Non\u2010Negative Matrix Factorization and Joint Approximative Diagonalization of Eigenmatrix. Moreover, an adaptive wavelet transform\u2010based speech enhancement technique is proposed, capable of adaptively and effectively enhancing the separated speech signal. The proposed method is aimed at yielding a general and efficient speech processing algorithm for the data acquired by speech sensors. As revealed from the experimental results, in the TIMIT speech sources, the proposed method can effectively extract the target speaker from the mixed speech with a tiny training sample. The algorithm is highly general and robust, capable of technically supporting the processing of speech signal acquired by most speech sensors.<\/jats:p>","DOI":"10.1155\/2021\/6655125","type":"journal-article","created":{"date-parts":[[2021,2,28]],"date-time":"2021-02-28T01:22:42Z","timestamp":1614475362000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["An Improved Unsupervised Single\u2010Channel Speech Separation Algorithm for Processing Speech Sensor Signals"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0781-9126","authenticated-orcid":false,"given":"Dazhi","family":"Jiang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhihui","family":"He","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yingqing","family":"Lin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yifei","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Linyan","family":"Xu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,2,27]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1504\/IJSNET.2019.098555"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1504\/IJSNET.2019.103042"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2015.2508504"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TEVC.2020.2985672"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1162\/evco_a_00214"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/taslp.2016.2553441"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.specom.2009.08.008"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/taslp.2018.2875794"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/78.554307"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.specom.2017.02.003"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2011.2160840"},{"key":"e_1_2_9_12_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCSI.2012.2215735"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1109\/tsp.2015.2477059"},{"key":"e_1_2_9_14_2","doi-asserted-by":"crossref","unstructured":"FanZ. 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