音量測量計 的英文怎麼說
中文拼音 [yīnliángcèliángjì]
音量測量計
英文
sound volume measuring set- 音 : 名詞1. (聲音) sound 2. (消息) news; tidings 3. [物理學] (音質) tone 4. (姓氏) a surname
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 音量 : volume; sound volume
- 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
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Emphatically, this paper discusses the pattern of signal and antenna radiation of the system, the design principles and technologies of audio - generator and monitor, and the modification of measurement deviation. through special tests and aviate experiments, it has been proved that the performance of the domesticalized system is better than of the initial system
文中重點分析了俄制分米波儀表著陸系統的信號格式和天線輻射場型,著重闡述了系統中音頻信號產生器和監測器的設計原理和實現技術,對信號檢測中的測量誤差進行了分析並設計了有效的修正方法。The initial vsd process uses two main characters, the average instantaneous energy and the average instantaneous zero crossing rate ( zcr ). to make the first recognition for the start and the end, the emphasis of which is to select the appropriate value of the threshold and the length of frame. in the final vsd process, the author compares several characters and confirms the new recognition character
初步分段過程使用了能量和過零率這兩個主要特徵進行端點檢測,重點是合理選擇兩個重要參數? ?門限和統計幀長度的取值;在最終分段過程中,筆者首先通過比較幾種特徵的識別效果,選擇卡爾曼濾波參數作為再次分段的識別特徵,還提出了一種新的識別特徵? ?周期性緩變特徵,使用這兩個特徵分別在子語音段內進行端點檢測。Then, the method of measuring hrtf by mit and cipic laboratory is briefly reviewed. after that, by using sound wave scatter theory and rigid sphere model of head, a simple method for calculation hrtf is proposed. and validating that method through psychoacoustics experiment, and matching database for realizing individual hrtf
然後簡述了麻省理工學院和cipic實驗室測量hrtf的方法,通過聲波的散射理論以及利用人頭模型提出一種簡化的理論計算對頭部尺寸對聲音定位的影響進行了理論分析,並且利用心理學測試驗證利用匹配數據庫實現hrtf的個性化。A large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量,本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析,得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現,起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成,起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大,這說明可以通過重新結構設計降低起落架噪聲。Manufacturer of precision instruments and controls including barometers, density monitors and level control for use in applications in chemical, petrochemical, food, medical, pharmaceutical, water and wastewater treatment, utility industries
-銷售非接觸紅外測溫儀環境測試儀音量計噪音計照度計溫濕度計一氧化碳測試儀電力基礎儀表數字萬用表交直流鉗形表。Speech endpoint detection can reduce computation in real - time system largely. therefore, the system can deal with speech input only. and avoid wasting computing and storing in silence segment. in favor of implementation in dsp system short of resources
語音端點檢測可以減少實時系統中的大量計算,使該系統僅處理語音輸入,不至於在靜音段白白浪費計算量和存儲量,有利於在資源較為緊張的dsp系統上實現。First, on the base of investigating geleshan geologic environments, the author carefully analyzes them, studies their water storage structure, discusses the relationship of underground water dynamic changes and tunnel drainage by desiccation ; secondly, the author makes the dynamic analysis, regression analysis, routine hydrochemistry analysis, isotope analysis, so draws to guan - yin gorge anticlire east and west slot ' s karst developing features, alternated conditions underground water and supplying drain ways ; thirdly, by stating the fissuring ' s surveying data, the author calculates the seeping tensor
作者在進行歌樂山地質環境調查的基礎上,仔細分析了大量觀測資料,研究其儲水構造,掌握地下水動態變化與隧道施工涌水的關系,及補給受降雨的影響情況。對隧道周圍的地下水進行動態分析、回歸分析、常規水化學分析以及同位素分析,得出觀音峽背斜東西翼槽谷的巖溶發育特徵,及地下水的循環交替條件、補給排泄途徑;統計分析裂隙測量數據,計算滲透張量。Specifically designed to stress packet voice network elements while measuring end - to - end voice processing performance using comprehensive next generation voice test suite
,特別為採用全面的下一代話音測試工具系列在測量端到端話音處理性能的同時著重於分組話音網路組件而設計。Abstract : a large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
文摘:應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量,本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析,得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現,起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成,起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大,這說明可以通過重新結構設計降低起落架噪聲。And an automatic gain control ( agc ) loop is introduced to keep the vibrating amplitude of dive tines invariable. it will effectively improve the linearity and robustness of the gyro. moreover, the configuration of the drive circuit is illustrated in detail
3 .設計了微陀螺諧振驅動控制系統,引入了自動增益控制環節,使驅動音叉振動幅值保持恆定,提高了微陀螺的測量線性度,增強了微陀螺的魯棒性,並且詳細介紹了驅動控制電路的實現方法。Specification for sound level meters for the measurement of noise emitted by motor vehicles
機動車噪音測量用聲級計規范Image, measurement and voice transfer to pc
測量數據,語音和文本傳送至計算機Focusing on a tuning fork vibratory gyroscope fabricated through silicon bulk micromachining, the matrix perturbation technology in the random finite element method was introduced to analyze the statistical characteristics of the natural frequencies and output capacitance of tuning fork vibratory gyroscope
摘要以一種通過體微機械加工技術制備的音叉振動式微機械陀螺為對象,基於隨機攝動技術定量計算了微陀螺固有頻率變異和檢測輸出電容變異的統計特徵,以概率思想表達了微陀螺批量加工過程所帶來的材料尺寸隨機誤差對其性能的影響。Methods for measurement calculation of sound emitted by machinery and equipment at work stations and other specified positions from sound power levels
工作站和其他特定場所機械設備聲音排放聲強級的測量計算方法Each subject was examined with nasometry and acoustic rhinometry before and 15 minutes after administration of a 3 % ephedrine solution spray to both nasal cavities
在完成第一次鼻音測量法及聲反射鼻量計檢查后,噴灑3 %麻黃素溶液于兩側鼻腔內, 15分鐘后再進行第二次語言治療師評估及噴藥后的鼻音測量法及聲反射鼻量計檢查。With frame gather card and ccd, metallographic image which can be processed by computer is acquired after a serials of the applications of digital image technique such as gray level transformation, dichotomy, noise eliminating, dilation and erosion, image enhancement, boundary detection, etc. an automatic quantitative metallographic analysis system is developed with visual c + + 6. 0 to realize the measuring of the size of the metal crystalline grain, evaluation the proportion of the second tissue of the metal, micro hardness. with three - level browser / server mode and active server technology, the system gives the remote user the applying service through network to communicate and analyze the image information
利用數字圖像處理技術,對圖像採集卡或ccd攝像頭採集到的金相圖像進行灰度轉換、二值化、噪音消除、圖像增強、邊緣提取等一系列圖像預處理,獲得計算機可以處理的數字圖像;並利用visualc + + 6 . 0開發定量金相分析系統,以實現對晶粒大小、金相組織第二相相對含量、顯微硬度等參量的自動測量;採用基於browser server的三層體系結構,通過網路訪問,並利用activeserver技術給遠程用戶提供應用服務,以便於根據圖像分析結果,給出專家分析意見,實現異地分析及交流。The main research content of the article is involved as follows : ( 1 ) the research and discussion of the quantitative metallographic analysis methods and the measuring methods of micro hardness. ( 2 ) the application of digital image technique in metallographic image preprocess such as gray level transformation, dichotomy, noise eliminating, dilation and erosion, image enhancement, boundary detection, etc. the application of the wavelet and multi - resolution analysis in metallographic image procession to improve the measuring accuracy and efficiency. the application of the region growth and mathematical morphology in analyzing image parameters to improve the flexibility and exaction
本文的主要研究內容: ( 1 )定量金相分析和顯微硬度測量的方法研究; ( 2 )利用數字圖像處理技術,實現金相圖像的灰度轉換、二值化、噪音消除、膨脹收縮、圖像增強、邊緣提取等預處理;引入小波理論、基於數學形態學的區域生長法對采樣圖像進行分析,實現了對採集圖像邊緣的有效提取,從而提高了測量精度; ( 3 )開發了金相圖像分析系統的主體結構(硬體結構和軟體結構) ; ( 4 )採用windows開發平臺的面向對象程序設計語言microsoftvisualc + +進行系統的模塊化設計; ( 5 )提出了採用多模式的知識表示方法建立知識庫,應用正反推理、模糊數學模型、基於規則的模式匹配模型建立金相分析專家系統。The two - dimensional axisymmetric subsonic - transonic - supersonic flow in an experimental arcjet thruster is simulated numerically using flux vector splitting method. the profiles of density, velocity, temperature, pressure and mach number can be obtained by the computation. the computation grid and some computed results are given here. the test equipment such as power supply system, ignition system, propellant supply system, arcjet thruster, thrust measuring device and vacuum system are introduced briefly. some working phenomena of the arcjet are observed and discussed. three different kinds of instability appeared in the process of the experiments. except some important parameters are measured, it is found that the operating stability of argon is better than that of nitrogen
對一實驗電弧加熱式發動機二維軸對稱亞跨超音速流動進行了數值模擬,所採用的方法是矢通量分裂演算法.通過計算可以得出密度、速度、溫度、壓力和馬赫數的分佈.給出了計算所使用的網格和一些計算結果.簡要介紹了實驗所使用的設備,如電源系統、點火系統、推進劑供給系統、電弧加熱式發動機、推力測量裝置和真空系統.對所觀察到的一些工作現象進行了討論.有三種不同的不穩定性出現于實驗過程.除了所測量的一些重要參數,通過實驗發現氬比氮工作更穩定Image thermal and visual, measurement, voice and text transfer to pc
紅外和可見光圖像,測量數據,語音和文本傳送至計算機It has raised more attentions in engineer fields, specially in signal analysis, images handles, pattern recognition, phonetic recognition, quantum physics, earthquake reconnaissance, fluid mechanics, electromagnetic field, ct imagery, diagnosis and monitoring of machinery defect, fractal, numerical evaluation et al. it is considered as important breakthrough in methods and tools
它在科學技術界引起了越來越多的關注和重視,在工程應用領域,特別是在信號處理、圖像處理、模式識別、語音識別、量子物理、地震勘測、流體力學、電磁場、 ct成像、機械故障診斷與監控、分形、數值計算等領域,它被認為是近年來在工具及方法上的重大突破。分享友人