測聲計 的英文怎麼說
中文拼音 [cèshēngjì]
測聲計
英文
acoumeter-
To measure, calculate, display, print sound intensity sound pressure, sound power, three dimensional sound intensity spectrum, equal intensity contour are all deeply studied. a set of software using multiple document interface ( mdi ) running under microsoft windows platform is developed
本文就聲強、聲壓、三維聲強譜、等聲強線以及a計權、 1 / 3倍頻程的測量、計算、顯示、列印等進行了深入的研究,並編制了一整套運行於windows平臺的圖形化多文檔界面聲強測量分析軟體。Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method
其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求,並在此基礎上加入g . 729b的靜音檢測模塊,以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法,通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計,信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號,信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計,除了類似雙音多頻的信號發生及頻率檢測設計外,還需要檢測信號持續時間,作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。In order to make the mgb more easy - operating, ultrasonic testing simula - tion software was designed and developed, which has a good user - oriented interface and can simulate easily the inspection fields of planar transducer, focused transducer and angle beam transducer. it also can help inspectors analyze the inspection procedures and predict the feasibility of actual ultrasonic testing, then choose suitable inspection parameters. the side - drill hole and flat - bottom hole are commonly used in ultrasonic
為了使多元高斯模型使用更加方便,本文設計並開發了基於多元高斯聲束理論的超聲檢測聲場模擬軟體,該軟體具有良好的圖形用戶界面,操作簡單,可方便地實現直探頭、聚焦探頭和斜探頭的檢測聲場模擬,可幫助檢測人員進行檢測過程的分析及結構件的可檢性預測,並選擇合適的檢測工藝參數。Electroacoustics - simulators of human head and ear - acoustic coupler for the calibration of supra - aural earphones used in audiometry
電聲學.人頭和耳模擬器.用於測聽計的超級聽力耳機校正用聽力耦合器Electroacoustics - simulators of human head and ear - part 3 : acoustic coupler for the calibration of supra - aural earphones used in audiometry
電聲學.人頭和耳模擬器.第3部分:用於聽力測定計的超聽力耳機校正用聲耦合器Product introduction bst - ant - g0 series access product adopts integration design, and synthesizes the antenna rfidreader infrared ray check voice and light alarm and powerful io controller. its read range can up to 120cm, and use for identifying personnel or goods passing in or out the access
Bst - ant - g0系列通道產品採用一體化結構設計,集成天線系統rf讀寫設備紅外檢測聲光報警和功能強大io控制器,讀寫距離可達120cm ,可用於人員貨物通道進出識別。This article elaborated the ultrasonic ranging basic principle, thesurvey, the computational method, and detailed introduction based onultrasonic ranging technology application back - draft radar systemdesign
留學解答資訊網:本文論述了超聲波測距的基本原理,測量、計算方法,並詳細介紹基於超聲波測距技術應用的倒車雷達系統的設計。The count demodulator design of underwater active acoustic detecting device based on cpld
的水中主動聲探測儀計數檢波器設計Electroacoustics - audiological equipment - part 1 : pure - tone audiometers
電聲學.測聽設備.第1部分:純音測聽計Iec 6 electroacoustics - audiological equipment - part 1 : pure - tone audiometers iec 60645 - 1 : 2001 ; german version en 60645 - 1 : 2001
電聲學.聽覺病矯治學設備.第1部分:純音測聽計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Meteorology - sonic anemometers thermometers - acceptance test methods for mean wind measurements
氣象學.聲學風速計溫度計.平均風速測量計的驗收試驗方法There are also instruments known as noise meters which measure this level directly.
還有一些可以直接測出聲強級的儀器,叫做噪聲計。Taking the near - field solution as the inputting data for aeroacoustic formulas, we solved the far filed hsi noise of rotors by several methods, which include farassat method solving fw - h ( ffowcs - william / hawkings ) equation, kirchhoff method solving general wave equation and a combined method ( k - fwh method )
噪聲計算以旋翼流動解為基礎,採用了氣動噪聲時域理論提供的三種預測方法,包括求解ffowcswilliams - hawkings方程的farassat方法、求解廣義波動方程的kirchhoff方法以及結合前兩種方法的k - fwh方法。First of all, by establishing the observation model of complex harmonic signal and complex linear chirp signal respectively under the co - jamming of additive and multiply noise, the paper constructed cyclic moment detectors of different orders, deduced snr expression of the detector through theoretic analysis, discussed the relation of detector performance and noise statistical characteristic. the curve of detection performance is obtained through monte carlo simulation test, proving the related conclusion derived
首先,論文分別以加性和乘性噪聲聯合干擾下的復諧波信號和復線性調頻信號為觀測模型,構造了基於不同階次的循環矩檢測統計量,從理論上推導出了檢測器的信噪比表達式,分析了檢測器性能與噪聲統計特性的關系,通過monte - carlo模擬試驗得到了檢測性能的曲線,驗證了推導的有關結論。On the base of the active sonar theory, this thesis delves into the critical technical of how to design detecting sonar system of under water vehicle, and completely discusses the idea of system designing, the construction of hardware, the problem solution of critical technical and experiment result analysis
本論文基於主動聲納的基本原理,深入研究了水下航行器的探測聲納系統設計過程所涉及的關鍵技術,結合探測聲納的研製工作,全面論述了系統的設計思想、硬體構成、關鍵技術問題的解決和實驗結果的分析。Second, introduce the dyadic wavelet analysis, and use it realized the signal monitor and analysis to the turbine compressor, obtained the detail signal and approach signal at different frequency parts of the compressor s original signal. one type of electromotor that made in china is choose, and it s noise is tested. the noise signal is analyzed by wavelet analysis and spectrum analysis. several high spectral peaks that make people hearing disameniry are found. by contrast with theory calculating results and farther analysis. the cause that producing these spectral peaks is located
其次,介紹了二進小波分析,並應用二進小波分析實現了對透平壓縮機信號的監測分析,得到了壓縮機原始信號在不同頻率段分解的細節信號和逼近信號。用小波分析和譜分析相結合的方法對某國產電機的噪聲進行了分析,找出了人的聽閾不閱的幾個高譜峰位置,進行了空氣動力噪聲計算,通過與理論計算結果進行對比分析,進一步找出了產生該頻閩譜峰的幾個原因,第三,介紹了諧波小波和分形的基本原理。The multiple beam sonar system for terrain survey has met the system ' s requirement via the results of pool static experiments
通過水池的初步靜態實驗,我們研製的多波束地形探測聲納系統已經達到了了系統的設計要求。In the present work, the causing of high noise of multi - effect falling film evaporator was introduced in detail. based on the result of modern test technology, the relationship of noise and work presser was received. ground on the method of superposition, the noise of raw material pump was separated from the mixed noise and gets the true noise of steam - jet - ejector
本文對三效降膜蒸發器設備工作時,噪聲產生的機理進行了理論分析與研究,利用現代聲學測試技術手段進行測試與分析,得出三效降膜蒸發器設備的整體噪聲隨熱壓泵工作壓力增大而增大的關系,利用噪聲疊加原理,將三效降膜蒸發器設備的物料泵噪聲作為背景噪聲,計算得出三效降膜蒸發器設備的熱壓泵真實噪聲,因而得出熱壓泵噪聲亦隨其工作壓力增大而增大的關系。2. to dissert how to realize detecting sonar system on hardware. include hardware realization approach of analog signal pretreatment, digital signal processing, transmitter, receiving converter and system power supply
論述如何在硬體上實現探測聲納系統,包括模擬信號預處理機,數字信號處理機的實現,發射機,接收轉換以及系統的電源設計都給出了具體的硬體實現方案。分享友人