濾過的信號 的英文怎麼說
中文拼音 [lǜguòdexìnháo]
濾過的信號
英文
filtered signal-
The assembly language program collects and processes the data real time. comparing kinds of method of filter and arithmetic of fft, the author select the fir filter to realize pretreatment of signal and radix - 2 fft to distill the characters of librations
通過對各種濾波方法和fft演算法進行比較,本套數據檢測和校準處理系統採用fir濾波對採集到的信號進行預處理,利用基2fft演算法來提取信號的頻率特徵。The scanning of the film by the photometer in the spacial domain is equivalent to the operation of a filter on a signal flowing through it in the time domain.
在空間域用光度計進行掃描,和時間域中濾波器對所通過的信號進行運算等效。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。This new family of dsp enables cost - effective design of intelligent controllers for brushless motors which can fulfill more conditions, consisting of fewer system components, lower system cost and increased performances. in the aspect of vibration detection and analysis, the system gets two - way vibration signals. after magnifying and filtering, the signals are inputted to dsp, and are analysised by dsp based user ’ s demand
振動測試分析部分採集兩路振動信號,經過隔離放大、濾波等信號調理電路后輸入dsp的片上ad模塊,在dsp上構建相應的數據採集模塊,以及濾波、時域分析、幅域分析等多種數字信號處理模塊,根據用戶需求對旋轉機械作相應的檢測與診斷。This can be a complex process that includes choosing appropriate signal conditioners, isolation circuitry, filtering, scaling, formatting, etc
這可能是一個復雜的過程,包括選擇合適的信號調理裝置、隔離電路、濾波、衰減、格式化,等等。On top of its conventional activities of signal magnification, reshaping, filtering, sampling, a / d transformation and scale switching, the intelligent sensor system can perform kinds of advanced operations such as on - line storage of parameters, real - time data processing, self - diagnosing of the system and so on. because of its communication interface with pcs, it serves as intelligent plug & play network sensor
它除了能完成對傳感敏感器件的信號進行放大、整形、濾波、采樣、 a d變換及標度變換外,還可實現參數在線存儲、數據實時處理、系統自我診斷等功能,並可以通過其通訊介面與溫室現場總線相接,組成即插即拔的智能網路傳感節點。In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research
因此,為提高原始電壓信號的質量,本文採用三相六元件的信號發生方案,通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析,依據磁場分析的結論對編碼器常用的信號發生結構進行了改進,改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲,進一步提高了信號質量,此結構不僅滿足了本課題的需要,而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。The second is a fuzzy neuron network based hybrid filter, which comprises four basic components : plus - shaped center weighted median filter, cross - shaped center weighted median filter, nine pixels median filter, and a fusion center with fuzzy - neuron network. the proposed filter is able to effectively inherit the merits of the used three filters. the third is a fuzzy reasoning filter based on neural network
第二種是基於模糊神經網路的混合濾波器,主要濾波器模塊有十字型中心加權中值濾波器、交叉型中心加權中值濾波器和9點中值濾波器,信號經過三種濾波器處理後送入一個訓練好的模糊神經網路進行融合處理,得到最終的濾波結果。Beside filtering interference signals and extract effective signals, it is a difficult problem to study the separation of multi - signal of sound wave and vibration
在實際測量過程中,除了過濾干擾信號,提取有效信號外,多振動源信號分離是本文研究的一個難點。We stretch a consumptive optic fiber into the molten metal and take the light signal from it, then transform the optic signal into electric signal and amplify the signal. send the signal into scm, use the scm to convert the signal into data and display the true temperature of the molten metal
具體的步驟是先將消耗型光纖插入熔融金屬提取光信號,在將光信號轉換為電信號並作放大,放大后的信號經過采樣濾波等處理后經單片機進行顯示,得到鋼水內部的真實溫度。Signalling on low - voltage electrical installations in the frequency range 3 khz to 148, 5 khz - part 4 - 6 : low voltage decoupling filters - phase coupler
頻率范圍由3khz至148 . 5khz的低壓電氣設備的信號傳輸.第4 - 6部分:低壓退耦過濾器.相位耦合器Signalling on low - voltage electrical installations in the frequency range 3 khz to 148, 5 khz and 1, 6 mhz to 30 mhz - portable low voltage decoupling filters - safety requirements
頻率范圍3khz至148 . 5khz和1 . 6 mhz至30 mhz的低壓電氣設備的信號傳輸.便攜式低壓退耦過濾器.安全要求Through using for reference and demonstrating the technology of video processing system of domestic and foreign, author has put forward a set of video processing system schemes suitable for the china " s actual conditions. by using the digital technology, such as digital encode - decode, digital phase - locked, digital filter, digital image storing, the system schemes realizes tv signal noise reduction and time error elimination in real time, and makes the system be a integrated noise reduction and time based corrector really
通過借鑒和論證國內外時基校正和視頻降噪的相關技術,作者提出了一套適合於中國國情的視頻處理系統軟、硬體方案實現模擬電視的信號數字轉換以及利用數字編解碼、數字鎖相、數字濾波、數字圖像存儲等數字技術來實現電視信號實時去噪和消除時基誤差,使系統真正做到集時基校正與降噪一體化。We made an improvement in overcoming the defects in speech signal adaptive delta modulation ( abbr. adm ), such as slope overloading and grain noise. in this method, numerical sliding average filtering was used for filtering decoding speech signal. experiments and analyses indicate that the method makes waveforms in good agreement between the decoding of adm and the original pulse coding modulation ( abbr. pcm ) signal, and considerably improves, the playback speech quality in naturalness, legibility and under standability
針對語音信號自適應增量調制( adm )方式中斜率過載和顆粒噪聲缺點,提出了一種改進方法,它利用滑動平均方法對解碼后的信號進行數字濾波.試驗和分析表明,該方法使解碼后的信號波形與原脈沖編碼調制( pcm )波形具有很好的一致性,使再生語音質量在自然度、清晰度和可懂度方面比改進前均有較大提高This thesis mainly describes a tesing and consoling kit based on ni " s special virtual instrument software development kit - labwindows / cvi, aming at traditional testing device " s limitation such as high cost of hardware, complexity of construct, singleness of function etc. the tesing and consoling kit can condition the signal intermixed with interfere noise and deal with the collected datum through common signal conditioning ( amplification, isolation multiplex filtering ) -, software calibration digital filtering etc to analyse signal in time and frequency domain
本文針對傳統測量設備硬體成本高、構造復雜、重用性差、功能單一等方面的問題,著重探討了利用ni的labwindows cvi這一虛擬儀器開發軟體構建的測控平臺,通過通用信號調理(如放大、隔離、多路轉換、模擬濾波等) 、軟體校正、數字濾波等方法對混雜有干擾的信號進行調理及採集后的數據進行處理,然後進行時域或頻域的分析。In this system, a tunable fiber fabry - perot ( f - p ) filter is used to detect the changes of the wavelengths of the fbgs, then both the tunable control signal and the signal indicating the changes of the wavelength transmitted by an a / d electric transmission circuit are input into computer. the corresponding changes of the measurands can be obtained by filtering, analysising and processing the experimental data by using the computer information process system
該系統採用可調諧光纖fabry - perot濾波法對fbg波長變化進行解調,通過a d轉換電路將調諧控制信號和波長變化的信號送入計算機並口,經過計算機信息處理系統的濾波,分析,處理,可得到相應被測參量的變化。In this system, a tunable fiber fabry - perot ( f - p ) filter is used to detect the changes of the wavelengths of the fbgs, then both the tunable control signal and the signal indicating the changes of the wavelength transmitted by an a / d electric transmission circuit are input into a high speed sampling card
該系統採用可調諧光纖fabry - perot濾波法對fbg波長變化進行解調,通過a d轉換電路的調諧控制信號和波長變化的信號送入高速采樣卡,經過計算機信息處理系統的濾波,分析,處理,可得到相應被測參量的變化。In the study of environment model - based processing, the thesis presents a signal enhancement method based on combination of the ocean acoustic propagation, measurement system and noise models. furthermore, a signal enhancement algorithm is developed on the basis of the model - based identifer ( mbid ) implemented by the the augmented gauss - markov process and corrsponding extended kalman filter
本文通過了對模基信號處理實現信號增強的理論研究,提出了一種利用傳播模型、噪聲模型和陣測量模型、並注重環境信息來實現水聲信號增強的方法,繼而實現了基於增廣高斯?馬爾可夫過程和相應的擴展卡爾曼濾波聯合的模基辨識器的信號增強演算法。In this thesis the researches on signal filtering are nicely done in both hardware and software
另外,本論文還從硬體和軟體兩方面對試井過程中常用的信號濾波方法作了較詳細的研究。Aiming at extracting harmonic components of signals, a filter progress is designed. during the progress, the technology of sampling rate alteration worked as an aid in dividing different frequency signals
針對一定諧波含量的信號,設計了將諧波分量分離的濾波過程,在此過程中引入采樣率轉換環節,配合小波濾波器實現不同頻段信號的分離。分享友人