acoustic analysis 中文意思是什麼
acoustic analysis
解釋
聲分析-
The main contributions are as follows : ( 1 ) de ( differential evolution ) algorithm is proposed to invert the ocean acoustic parameters in shallow water in order to get faster and more accurate results than ga ( genetic algorithm ) and sa ( simulated annealing algorithm ). also a posteriori probability analysis method is applied to evaluate the uncertainty of inversion results. ( 2 ) maximum likelihood objective functions for broadband mfi are derived according to different conditions
（ 2 ）根據不同的前提條件，採用似然比的方法推導了寬帶匹配場反演的最大似然目標函數；深入地研究了寬帶匹配場處理中的相干與非相干問題；在分析參數反演的敏感性之後，提出了淺海環境參數寬帶匹配場反演的多步優化策略，並與全參數反演方法進行了性能上的模擬比較。 -
The study includes the hole color tv imagery system for drill hole, even - pole bore - hole acoustic system and acoustic meter, bore - hole multi - point consolidation apparatus, the quick camera computer - aid image for high rocky slope, image technology for layer analysis, safety monitoring technology for the section close to the dam, software for processing and forecasting the slope monitoring data, high precision geodesy monitoring automation system, etc. all the study results are new, advanced and practical, which has applied in the project and gained the obvious benefits
鉆孔彩色電視孔壁成像系統、直接橫波測井研究偶極子井下聲系和聲波儀、鉆孔多點滲壓儀及壓模系統、巖質高邊坡快速攝像微機地質素描成圖、層析成像技術、近壩庫段安全監測技術、邊坡監測數據處理預報軟體研究、高精度大地測量監測自動化系統等項目，研究成果內容新、先進、實用，已在工程中應用，效益顯著。 -
Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box
綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。 -
Analysis on eigenvalue of coupled structure - acoustic modal
聲場耦合模態特徵值分析 -
Aftaas advanced fast time acoustic analysis system
高級快速音響分析系統 -
Analysis of application of intraoperative electrophysiological monitoring to acoustic neuroma operations
聽神經瘤術中神經電生理監護的應用分析 -
Analysis of the acoustic propagation properties under the sea with normal vibration method
用簡正波方法分析聲波在海水中的傳播特性 -
2. a method combining some of the composite space structural simulation, wavelet analysis, fuzzy mathematical, genetic algorithm, artificial intelligence, expert system, vibration diagnosis, acoustic sounding, supersonic flaw detection, radioscopy, infra - red detection and so on to diagnose the composite structure damage is discussed
本文對把復合材料大跨建築結構模擬、小波技術、模糊數學、遺傳演算法、人工智慧、專家知識、振動診斷、聲發射技術、超聲波檢測、射線探傷、激光全息檢測、紅外線檢測等方法中的幾種融合在一起對復合材料大跨建築結構進行損傷診斷的方法進行了探討。 -
In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )
主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。 -
Wave based method for multi - domain acoustic analysis
法在多域聲學分析中的應用 -
Scanning acoustic microscope ( sam ) can be used to detect package delaminations and quickly identify the failure cause at the early stage of failure analysis
掃描聲學顯微鏡可以用來檢測封裝分層，能在失效分析的早期階段快速地鑒別失效原因。 -
A scanning acoustic microscope ( sam ) can be used to detect package delaminations and quickly identify the failure cause at the early stage of failure analysis
掃描聲學顯微鏡可以用來檢測封裝分層，能在失效分析的早期階段快速地鑒別失效原因。 -
New method for determination the environmental waste water was established by bulk acoustic wave impedance analysis technique, which is based on the inhibition of antibiotics to the growth of bacteria. the proposed method was applied to monitor the environmental wastewater
採用聲波阻抗分析技術，基於某些抗生素類藥物對微生物生長的抑制作用，建立了測定廢水污染程度的生物學新分析方法，並用於環境廢水污染程度的監測。 -
In accordance with the testing results and the analysis concerned, it is considered that the seismic wave method, borehole acoustic method and indoor rock mechanics test are feasible to evaluate the engineering quality of the foundation rock for the toe slab of the dam comprehensively, and the results can lay a reliable foundation for the accepting the foundation rock for the toe slab of the dam
根據檢測結果與分析，認為採用地震波法、鉆孔聲波法以及室內巖石力學試驗綜合評價水電站大壩趾板建基巖體工程質量是可行的，其成果可為大壩趾板建基巖體驗收提供依據。 -
Jiefu has a strong r d team which organized of state grade acoustic expert, constructs an effective production and quality control system, possesses of denmark loudsoft acoustic design soft and american lms acoustic analysis soft, full set b k2012 acoustic testing system, korea sigma inspect and test system as well as a 520cbm anechoic room, several reliability laboratory and subjective audition room. facilitated by all the above - mentioned resource, jiefus engineers continuously design and create the excellent speaker unit and speaker system
公司憑藉由國家級聲學專家組成的技術研發隊伍，建有一套有效的生產質量控制體系，擁有丹麥loudsoft聲學設計軟體和美國lms聲學分析軟體全套的丹麥b k公司2012電聲測試系統，和韓國sigma測試及試驗系統，並配備有520立方米的消聲室，多個信賴性實驗室和主觀聽音室，通過這些完備的研究開發資源，傑夫工程師不斷設計並生產出優秀的揚聲器單元和系統。 -
Theoretical expatiate on general concepts and fundamental principles of information hiding and steganography, also point out possible directions for further research, also analysis the probability of speech as the host carry signal and efficient masking characteristics of psycho - acoustic model, it is shown that : there is an improvement on imperceptibility according to human auditory masking effect
闡述了信息隱藏技術和隱寫技術的重要概念、基本理論以及廣闊的應用前景。分析了將語音信號作為宿主載體信號的可行性，參考心理聲學模型的特性，得出結論:基於人耳聽覺掩蔽效應的隱寫演算法，在隱蔽性上有很大的提高。 -
The application of voice acoustic analysis in evaluation of electronic laryngoscope operation
嗓音聲學分析在電子喉鏡手術療效評估中的應用 -
Impaired speech production and perception ; hearing loss, aphasia, neurogenic disorders, laryngeal disorders, other impairments ; aids for speech and hearing - impaired. speech and language development in children ; acoustic analysis of children ' s speech
23受損的語音產生和感知；聽力衰減、失語癥、神經的失序、喉頭的失序及其他的損傷。對于語言能力和聽力受損的協助。兒童語言和表達能力的發展。兒童語音在聲學上的分析。 -
Acoustic analysis characteristic
聲分析特性曲線 -
At first, the dynamic response of the mechanism can be measured with the multifunction testing bed, which is designed by ourselves. then the dynamic response can be taken as the boundary conditions, and the acoustic analysis will be carried out with the help of acoustic analysis software - - - - - - sysnoise. due to the high - reliability of sysnoise, the results can be regarded as the experimental results
在目前實驗條件尚不能實現機構聲輻射性能測定實驗的情況下，採用實驗與模擬分析相結合的方法，在自搭的彈性連桿機構多功能實驗臺上通過實驗測得機構動態響應的結果，然後利用專門的聲學分析軟體sysnoise進行聲輻射西北工業大學博士學位論文性能模擬實驗分析，可以將其視為實驗結果。
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