{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,8]],"date-time":"2025-11-08T17:59:52Z","timestamp":1762624792010,"version":"build-2065373602"},"reference-count":42,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,4,22]],"date-time":"2022-04-22T00:00:00Z","timestamp":1650585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Current acoustic modeling methods face problems such as complex processes or inaccurate sound absorption coefficients, etc. Therefore, this paper studies the topic. Firstly, the material samples were prepared, and standing wave tube method experiments were conducted. Material acoustic data were obtained, while a model using improved genetic algorithm and neural network was subsequently proposed. Secondly, the acoustic data obtained from the experiment were analyzed; a neural network structure was designed; and the training, verification, and test data were all divided. In order to facilitate data processing, a symmetrical method was used to inversely normalize all the data. Thirdly, by the design of real coding scheme, fitness function, crossover, and mutation operators, an improved genetic algorithm was proposed to obtain the optimal solution, as the initial weight and threshold, which were then input into the neural network along with the training and verification data. Finally, the test data were input into the trained neural network in order to test the model. The test results and statistical analysis showed that compared with other algorithms, the proposed model has the lower root mean squared error (RMSE) value, the maximum coefficient of determination (R2) value, and shorter convergence time.<\/jats:p>","DOI":"10.3390\/sym14050863","type":"journal-article","created":{"date-parts":[[2022,4,24]],"date-time":"2022-04-24T00:45:21Z","timestamp":1650761121000},"page":"863","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["An Optimized Neural Network Acoustic Model for Porous Hemp Plastic Composite Sound-Absorbing Board"],"prefix":"10.3390","volume":"14","author":[{"given":"Haizhen","family":"Wang","sequence":"first","affiliation":[{"name":"College of Computer and Control Engineering, Qiqihar University, Qiqihar 161006, China"}]},{"given":"Hong","family":"Zhao","sequence":"additional","affiliation":[{"name":"College of Light Industry and Textile, Qiqihar University, Qiqihar 161006, China"}]},{"given":"Zuozheng","family":"Lian","sequence":"additional","affiliation":[{"name":"College of Computer and Control Engineering, Qiqihar University, Qiqihar 161006, China"}]},{"given":"Bin","family":"Tan","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48913, USA"}]},{"given":"Yongjie","family":"Zheng","sequence":"additional","affiliation":[{"name":"College of Light Industry and Textile, Qiqihar University, Qiqihar 161006, China"}]},{"given":"Erdun","family":"E","sequence":"additional","affiliation":[{"name":"Elastic Block Store Performance Team, Amazon Web Services, Boston, MA 02210, USA"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1016\/j.scitotenv.2018.03.374","article-title":"Road traffic air and noise pollution exposure assessment: A review of tools and techniques","volume":"634","author":"Khan","year":"2018","journal-title":"Sci. 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