乐胖代购免代理版

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$$l_1$$<\/jats:tex-math>l<\/mml:mi>1<\/mml:mn><\/mml:msub><\/mml:math><\/jats:alternatives><\/jats:inline-formula>-reweighting (GL-L1) approach. Both proposed approaches are implemented using the alternating direction method of multipliers (ADMM), and their performance is evaluated through simulations in which different setup conditions are considered, ranging from different types of model mismatch to variations in the acoustic scene and microphone directivity pattern. The results obtained show that in a scenario involving a microphone response mismatch between observed data and the signal model used, having the additional nonnegativity constraint on the residual noise can improve the DOA estimation for the case of GL-LS and the PSD estimation for the case of GL-L1. Moreover, the GL-L1 approach can present an advantage over GL-LS in terms of DOA estimation performance in scenarios with low SNR or where multiple sources are closely located to each other. Finally, it is shown that having the least squares PSD re-estimation step is beneficial in most scenarios, such that GL-LS outperformed GL-L1 in terms of PSD estimation errors.<\/jats:p>","DOI":"10.1186\/s13636-023-00304-8","type":"journal-article","created":{"date-parts":[[2023,10,4]],"date-time":"2023-10-04T15:01:41Z","timestamp":1696431701000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Direction-of-arrival and power spectral density estimation using a single directional microphone and group-sparse optimization"],"prefix":"10.1186","volume":"2023","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-6827-3916","authenticated-orcid":false,"given":"Elisa","family":"Tengan","sequence":"first","affiliation":[]},{"given":"Thomas","family":"Dietzen","sequence":"additional","affiliation":[]},{"given":"Filip","family":"Elvander","sequence":"additional","affiliation":[]},{"given":"Toon","family":"van Waterschoot","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,10,4]]},"reference":[{"key":"304_CR1","first-page":"269","volume-title":"in Handbook on array processing and sensor networks, Acoustic beamforming for hearing aid applications","author":"S Doclo","year":"2010","unstructured":"S. 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