CINXE.COM

Just a moment...

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'managed',cRay: '91c79d7d8e6b47fe',cH: 'RTXJA91X5gBCXh_x9sgqjCClNU_TQ2.sXtIzgqkkM5o-1741324528-1.2.1.1-3mnQvuoOTSbolMFIUXVEE2kb4qAGSJ3KzgVhoKZPFYEuhRz750CtCi8BhRUf_JHS',cUPMDTk: "\/abstracts\/search?q=a%20stationary%20random%20acoustic%20source&__cf_chl_tk=1NziMo4Ep4.s5tN.upFfrtcS2BT5nEmDdJFWbmcpBXU-1741324528-1.0.1.1-Pya1djNwkjwuYjxeyx27cRWIVA66CqZjbOffLD1pwzc",cFPWv: 'g',cITimeS: '1741324528',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=a%20stationary%20random%20acoustic%20source&__cf_chl_f_tk=1NziMo4Ep4.s5tN.upFfrtcS2BT5nEmDdJFWbmcpBXU-1741324528-1.0.1.1-Pya1djNwkjwuYjxeyx27cRWIVA66CqZjbOffLD1pwzc",md: "JZ8GH4F._d7NT5LmnF1LPTeAq5Cq7wxXjaOftpZD4Uc-1741324528-1.2.1.1-mIgVTHmBqUJkwe3BflT9KRqmjYiPMCOZyYJwMic1Byb35Fkf6v1tgktZhpfnxULKsXdNpMvNg3K0AntNqkjgP8jIR5ItWJ1MoQ29trSU0rGrqAIoyTmmEwVxWnFLEOz0YZkMLekZaDjGili.50n4LDkZYidGE0Fh8V2wh86h4ebbuO9LND7hfD_UWNv20TUp.dCLg7Cv3rML4fLVzIkej53ua87QUKeKILBuKLfCzv5seVkeJUL9aXpBtbyCYlEmWdbY0SKHK4UpZTB9ZakQ4uQHbe6rcSrmhikyBlBPHMY1eMZjrxZxeKn5mmceFLufv0BZWTS5dH11egL8Dj1kc234Ni57GAeBRlTf7OepqK2w7BH63OwMO7ztVkjjQlGyvrl32Zi6DiBS3BMof1z845Eg0xtG3UHrp.2LI2kHeOpAMggG4Jhu2kindpSsGJPpejSEx945Z590kFU_Dw8QFpBXpPxUCWPEDy82XnX4NlIMtnfR6qlj23HKUk.PQaWDQe464yQo6Ea1E_LKTTO10CnRzbIV9w8urH..jSpAAiRFj9PM9RIkDbs7CZb.J2oBJ4LWWw.bfG3wXWSnHz8TI9UIzEwEU4smENgcaXMr7x6NUrKcB8s0w0RTUweA3GJejygNvfFKsv2Vk0tVWic.Iavre65eOq4WCI95j4oKOvlp.m74oWY6_MbIb2KU3x1Vw2IOef6C21qWKHne76xYrtI.tkxn5Y1ttJjwABStz1FtkVFgjmmwhuMnHe6I5lLuIZny7cGbITHzIUMqJyePtVsbWP4EClpRblayoM.rawGu6TuPzNjSQBucNG0Thz3jL6eqInxaBG1gOI0zaK.wumvVXUXkh7lR3x3etRwtE9seZ3f9wJtfz4X.x68_27MgDzv1XucJELEPeWckPOt1JRGENzSX6OrB2ZnQ_eW4fNHepySfGDWu2F9eDumS.xF5jETIGOmHp1Kyv56Svv1QDO5yFso8unDYt9wAx.qj4FXsXLkRWw6erwM0.hJWzaNTkf.eDSGxU1gXf5LVYEd_V1bnhoxB914xwV82GExsluEy6PMaC4fUlDUh.1qLIATy_j.QCSvghsYrLd0VpB6jv_76YTfMYrU4Bz6zX9yHdqGg1kvKyfrZ2.vi0QckKlknlpT4VHOTAqrAWj5OLOn2qsO9ilD5k_1GSmlNpFhJ2.o..Ow9wVlCr4uCw4R9jqAX4Zft8ssj2dKt4PsegUJQLQ3DJxmvUKHQAJjbbkg2ZcyFdW0PCwAvymvo1sBK3dK_buMXtr7Tg0BuAmCdlDAJEuM3uCYU_jk7Ir2jkbei6OjnDPuKvfqNhJZNS5sF_jbvz4UTMgvTH3DF7luPDH.CnA",mdrd: "aVxmA0iHbJR61J.QzrK2ka.W1VtU_H917vMCzraSLZw-1741324528-1.2.1.1-O4vaNZXZ6TJ0YJu.dQ_NAV5Tgr2fO_Rj.U99NZiNOyQSk5d0ZWgT0M85qjXHa_IUAzBGdqOH5DXiZjvVGi1C4bXTlqKmDGw9YUGeNCrLr5fjiUPFqKL36XrUQ.jShYH5.MxMMUT8ie00Wo_Y_Txw6auiLUONkzXEvzpVRtbc6mmxeTX563Q6zirT60cdooam1TNZTaHOivQn52ZxsqaU3BkVAJVtsxMnVBUOK_YDK18HD6AvSnD2kHwKB0JaEZbqlU0QfjDY._Uera5dECIMnwwaNRPs1_v.KxaQUVfrbCWjpdLGzz4m0jrus.DQnHxL_DXqG3qOAyjPBjGbhY_4Kn94GJBaPUK04k_I73ZfKnCxYwObHYtr43tn2aPppuXxbmGwlcgxePd.BlSAvslEHOa0hGSxZ_u84buVOV9wDyBAAMm6_QjyP9x46J9PuMGjpvKpgZdKrZ9NMZtWoTdaG_2Fw6CJSp7ouZ3yGO17ATba_0vuP4YKuAhw43pwa14eCgeys.dVMYp_EetDjwTPEod3xeZgXByqWv4KJ7SmM9G0u9.nz9I3nJ4ueDMLN8cen33AKVbfBNzi9zfMtsP5OINsw99.m.l1GoxMRewW62YiQYD76WyxqirLJnOnx_EQr_aDTTdRndbJiY5a.CM7fnhy32OZMAsVBQEGJ6udN_M9FUuYDet2xAwlUxsUdvphUMKDx1W9PNF.3fBiJCsx_L73PgOk9HlSzt9IkHE3wpGjEXxJ7NDe_aaqBPBlzC9b35eUB.KZ9zSZtJrp9CyUlhCVm65YDhdmR59GZbaJuHcduMS9GqMkFs05uTIghPWv8xriKL_M75JkQ.1QL.Sev6LjGvNwd.C3eZzCMv1B8q6WtC3_j_jki94wWcrJxHonX3xuYBHzWjvaWKksdNxddRpDNNv6cN_S_wKTQ_Mwiw_UuB7PURUj90zYq.rBeeztE6hZQ9uA8Pv1rkJ90.1B9L3udFd6ENpFvKSVIZapMvUrFfqhbqphPmOrrhnSuIUCVBSPcU6tH7_4ZdGBx4GffE8CeUn5IgcihjeczlO4XB887c6PcloB6xLNebyxL1hUU2hGNCe8D5NheEuJlKgb8g6tZ90sszUjuJwhYL8T7DbqJKvsD5Atqbjrcqd9pZ5VO9BOJ6KTO6tknD.7J2RIMt1crOTVE8qGyaKIrO1zkd.FpGY8I7I7lV4tnKX5sQ83TaahggANbPW2hh3NpCuDJfV0Q3xzy9bxnuVmWKGGjpjQ9P_Ib0FauZAwrXnBKrOAkpRlt3uxDhp8Dh64DHs11BksTwku15q1nFIdczZDb_aUP0CxvSSeq1JXjuurASXDZ35gUcXDNmclmaB66JnTLqFTHddVipRqHXqWwVys6zu_VckTylNPljXmUQPRoIF47qsa9bOUhzDO3ZUaFuDAXEjZTNShUdr.EqLqqU1zHO0S8sYGRrQppE1RBEfIC6Ehb.bAei2hL8KDF2v__9zLRVl8rqPDytT1yZYhe4FM69YVkj0YvxNkMdeL.jGfBDzNqREZVEC_dzni5ryzVrlNzfXA1jfW2TnmOFcDazfYcbaqHtm_RflcBF4dy1ma7WB3PuCRmI_RDADz5mJvQ1by5SrQzg9x2TCjsj6YfJkJLbTYgwBIuooywMX0acuTqhYe1wRkha55Je3stDcbP6StQirLW1htFPSWVTv.S3bJuLJGtPSeySEP84LB5BHuP_EKwnshwZN2U8jK550ARsLXprtu_avxY6SNeLsIoTLjIWIJBKuDorODE8AQ77vSA6y8.32ccty2bmFLnSHtW0DN7fzMEOisIgqanNigkMOC4p.2a7dJXB9QmssjfjGg7IHRn_RVvgJLj75e61lls_qoV7MZG1p1WQAmjelM5C3Yprdc0fQv07h.8Jq3TP2C9va5LcaZmkcY7cemwJ2_WdX_rtXmPVH858wdkUyEYOlA5uw_nQmmsPPQz9N21Z92N2g."};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91c79d7d8e6b47fe';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=a%20stationary%20random%20acoustic%20source&__cf_chl_rt_tk=1NziMo4Ep4.s5tN.upFfrtcS2BT5nEmDdJFWbmcpBXU-1741324528-1.0.1.1-Pya1djNwkjwuYjxeyx27cRWIVA66CqZjbOffLD1pwzc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>