信息科学与电子工程专业英语(王朔中).ppt

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1、TechnicalEnglishForInformationScienceandElectronicEngineeringUnit9Electronics:DigitalSignalsandSignalProcessingPartIDigitalSignalProcessing3NewWordssub-field分领域，子领域sonar声呐sensorarray传感器阵列biomedical生物特征的algorithm算法abbreviate缩写，缩略purpose-designed针对目的设计的application-specific面向应用的integratedci

2、rcuits集成电路autocorrelation自相关wavelet小波baseband基带informed有知识的，有见闻的spatialdomain空间域cross-correlation互相关interval间隔discretization离散化quantization量化partition分割，分区finiteset有限的集4NewWordstheorem定理scenario情节，方案carrier载波ingredient成分，因素demodulation解调enhancement增强filtering滤波weighted加权的characterize描绘，刻

3、画性质superposition叠加causal因果关系的converge收敛diverge发散bounded有界的transferfunctions传递函数blockdiagram方框图derive推导magnitude大小cepstrum倒谱logarithm对数5NewWordsFIR(finiteimpulseresponsefilter)有限冲击响应滤波器IIR(infiniteimpulseresponsefilter)无限冲击响应滤波器field-programmablegatearray(FPGA)现场可编程门阵列computeraidedtomogra

4、phy(CAT)计算机断层扫描seismology地震学equalization均衡hifi(highfidelity)高保真（音乐）reinforcement加强animation动画loudspeaker扬声器floatingpoint浮点arithmetic算术magneticresonanceimaging(MRI)磁共振成像fixed-pointarithmetic定点运算，整数运算61Digitalsignalprocessing(DSP)isthestudyofsignalsinadigitalrepresentationandtheprocessingm

5、ethodsofthesesignals.DSPandanalogsignalprocessingaresub-fieldsofsignalprocessing.DSPincludessub-fieldslikeaudioandspeechsignalprocessing,sonarandradarsignalprocessing,sensorarrayprocessing,spectralestimation,statisticalsignalprocessing,imageprocessing,signalprocessingforcommunications,bi

6、omedicalsignalprocessing,etc.音频及语音信号处理、声纳和雷达信号处理、传感器阵列处理、谱估计、统计信号处理、图像处理、通信信号处理、生物医学信号处理72SincethegoalofDSPisusuallytomeasureorfiltercontinuousreal-worldanalogsignals,thefirststepisusuallytoconvertthesignalfromananalogtoadigitalform,byusingananalogtodigitalconverter.Often,therequiredoutp

7、utsignalisanotheranalogoutputsignal,whichrequiresadigitaltoanalogconverter.数字信号处理的目标通常是测量连续的真实世界的模拟信号或对其滤波83ThealgorithmsrequiredforDSParesometimesperformedusingspecializedcomputers,whichmakeuseofspecializedmicroprocessorscalleddigitalsignalprocessors(alsoabbreviatedDSP).