数字信号处理(DSP)专业词汇.doc

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1、系统：system信号：signal模拟信号：analogsignal数字信号：digitalsignal模/数转换：analog-to-digitalconversion频谱：spectrum数字滤波：digitalfiltering滤波器：filter采样：sample保持：hold数字代码：digitalcode量化电平：quantizationlevel时域：timedomain频域：frequencydomain低频：lowfrequency高频：highfrequency低通滤波器：lowpassfilter高通滤

2、波器：highpassfilter带通滤波器：bandpassfilter带阻滤波器：bandstopfilter零阶保持信号:zeroorderholdsignal平滑：smooth采样周期：samplingperiod频率分量:frequencyelements图像处理：imageprocessing传感器：sensor电压：voltage电流：current•anti-aliasingfilter抗混叠滤波器•anti-imagingfilter抗镜像滤波器•samplinginterval采样间隔•=samplingp

3、eriod采样周期•samplingfrequency采样频率•=samplingrate采样速率•samplingtheorem采样定理•Nyquistsamplingrate奈奎斯特采样率•Nyquistfrequency奈奎斯特频率•Nyquistrange奈奎斯特范围•oversampling过采样undersampling欠采样•quantizationstep量化步长quantizationnoise量化噪声•bitrate比特率•数字函数：digitalfunction合成函数：compositefunction

4、•二维数字信号：two-dimensionaldigitalsignal•语音信号：speechsignal量化方案：quantizationscheme•脉冲函数：impulsefunction单位脉冲函数：unitimpulsefunction•阶跃函数：stepfunction幂函数:powerfunction•指数函数:exponentialfunction正弦函数：sinefunction•余弦函数：cosinefunction复平面：complexplain•欧拉恒等式：Euler’sidentity模拟频率：an

5、alogfrequency•数字频率:digitalfrequency采样间隔：samplinginterval•相移：phaseshift像素：pixel•灰度级：grayscale•roll-off滚降gain增益•passband通带stopband阻带•bandwidth带宽linearsystem线性系统•superposition叠加原理time-invariant时不变•causalsystem因果系统differenceequation差分方程•filtercoefficient滤波器系数recursivefi

6、lter递归滤波器•nonrecursivefilter非递归滤波器finitewordlengtheffect有限字长效应•impulseresponse脉冲响应infiniteimpulseresponse（IIR)无限脉冲响应•finiteimpulseresponse(FIR)有限脉冲响应•movingaveragefilter滑动平均滤波器•stepresponse阶跃响应•ztransformz变换•regionofconvergence收敛域•inverseztransform逆z变换•transferfunct

7、ion传输函数•partialfractionexpansion部分分式展开•cover-upmethod覆盖法•zero零点pole极点•marginallystable临界稳定unstable不稳定•傅立叶变换：FourierTransform•滤波器形状：filtershape•频率响应:frequencyresponse•频率特性：frequencycharacteristics•离散时间傅立叶变换：DiscreteTimeFourierTransform•幅度响应：magnituderesponse•相位响应：pha

8、seresponse•传输函数：transferfunction•相位差：phasedifference•采样频率：samplingfrequency•whitenoise白噪声•magnitudespectrum幅度频谱•phasespectrum相位频谱•discrete