DSP单词整理.doc

Chapter1Signal Processing信号处理classification分类variable变量vector矢量scalar标量multichannel多通道multidimensional多维的，多面的amplitude幅度waveform波形continuous-time连续时间discrete-time离散时间analog signal模拟信号digital signal数字信号normalize使恢复正常deterministic signal确定信号random signal随机信号sample抽样numerical数字的quantized量子化的(数字转化)time-domain时域frequency-domain频域elementary基本的implement实现amplification放大scaling加权delay延时addition相加gain增益attenuation衰减advance超前product乘积integration积分differentiation微分filter滤波器lowpass filter低通滤波器highpass filter高通滤波器bandpass filter带通滤波器bandstop filter带阻滤波器block屏蔽passband通带stopband阻带quantized boxcar signal量化阶梯信号linear线性time-invariant时不变cutoff-frequency截止频率Chapter2algorithm算法horizontal水平面vertical垂直面consecutive samples相邻样本sampling interval抽样间隔sampling period抽样周期sampling frequency抽样频率real/complex sequence实数/虚数序列conjugate共轭analog-to-digital converter模数转换器sample-and-hold circuit采样保持电路equivalent等效的infinite/finite无限的/有限的finite/infinite-length有限/无限长finite-extent有限范围finite-duration有限时宽causal/anticausal sequence因果序列/非因果序列reversal反转even/odd sequence偶/奇序列conjugate-symmetric/ conjugate-antisymmetric共轭对称/共轭非对称periodic/aperiodic周期性的/非周期性的energy signal能量信号power signal功率信号average power平均功率appending with zeros补零bounded有界的bounded-input,bounded-output有界输入有界输出(BIBO)left-sided/right-sided/two-sided sequence左边/右边/双边序列time-shifting operation时移delaying operation延时运算advancingoperation超前运算unit delay单位延时time-reversal operation时间反转运算folding operation折叠运算absolutely summable绝对可和square-summable平方可和N-periodic extensionN倍周期延拓unit sample sequence单位抽样序列unit step sequence单位阶跃序列exponential sequence指数序列complex exponential sequence复指数序列discrete-time impulse离散时间冲激in-phase component同相分量quadrature component正交分量real sinusoidal sequence实正弦序列sinusoidal envelope正弦包络angular frequency角频率decomposition分解phase相位radian弧度exponential sequence指数序列fundamental period基本周期arbitrary sequence任意序列Shift-Invariant System时不变系统Impulse Response冲激响应Step Response阶跃响应Linear system线性系统Stable system稳定系统commutative交换律associative结合律distributive分配率Superposition叠加accumulator累加convolution卷积property性质cascade connection级联parallel connection并联constant常数coefficient系数precisely精确地Chapter3Discrete-Time-Fourier Transform离散时间傅里叶变换Fourier integral傅里叶积分Finite discontinuities有限个不连续点spectrum谱magnitude/phase spectrum幅度/相位谱finite interval有限区间absolutely integrable绝对可积Energy Density Spectrum能量密度谱Parsevals relation帕斯瓦尔定理Principal value主值Frequency response频率响应magnitude/phase response幅度/相位 响应gain/attenuation/loss function增益/衰减/损耗 函数band-limited带限bandwidth带宽integer整数periodic impulse train周期脉冲序列Frequency-Shifting频移Modulation调制eigenfunctions特征值digital filer数字滤波器Chapter4Digital Processing of Continuous-Time Signals连续时间信号的数字化处理aliasing混叠anti-aliasing反混叠reconstruction重建sampling process抽样过程Mathematical representation数学表示ideal sampling model理想抽样模型folding frequency折叠频率recovery恢复oversampling过抽样undersampling欠抽样critical sampling临界抽样aliasing distortion混叠失真passband通带stopband阻带passband edge frequency通带截止频率stopband edge frequency阻带截止频率Chapter5Finite-Length Discrete Transforms有限长离散变换Discrete Fourier transform离散傅里叶变换Basis sequences基本序列Inverse discrete Fourier transform离散傅里叶逆变换frequency samples频率样本circular Shift圆周（循环）移位circular time-shifting operation圆周时移运算circular frequency-shifting operation圆周频移运算circular time-reversal operation圆周时间反转运算modulo operation模运算circular convolution圆周（循环）卷积N-point circular convolutionN点圆周（循环）卷积circulant matrix圆周矩阵Chapter6z-TransformZ变换unit circle单位圆region of convergence（ROC）收敛域Rational z-transform有理z变换Polynomial多项式zero point零点pole point极点Inverse z-Transformz反变换Partial-Fraction Expansion部分分式展开法residue留数transfer function传输函数system function系统函数Chapter8Digital Filter Structures数字滤波器的结构IIR: Infinite Impulse Response无限冲激响应FIR: Finite Impulse Response有限冲激响应Block Diagram Representation方框图表示Basic Building Blocks基本结构单元Analysis of Block Diagrams方框图的分析Delay-Free Loop无延时回路Signal Flow-Graph信号流图node 节点branch支路addition加法器multiplication乘法器(增益)unit delay单位延时Equivalent Structures等效结构transpose operation转置运算direct form直接型cascade realizations级联型parallel realizations并联型linear-phase FIR structures线性相位FIR滤波器结构allpass filter全通滤波器Chapter9IIR Digital Filter DesignIIR数字滤波器设计Digital Filter Specifications数字滤波器指标passband通带stopband阻带transition band过渡带passband edge frequency通带截止频率stopband edge frequency阻带截止频率peak ripple values峰波纹值peak passband ripple峰值通带波纹minimum stopband attenuation最小阻带衰减maximum passband attenuation最大通带衰减selection of the Filter Type滤波器类型的选择First-Order Butterworth lowpass filter一阶巴特沃斯低通滤波器magnitude-squared response幅度平方函数Scaling the Digital Transfer Function缩放数字传输函数Bilinear Transformation method双线性变换法Frequency warping 频率畸变Spectral Transformation谱变换Chapter10FIR Digital Filter DesignFIR数字滤波器设计filter order滤波器阶数window-based method窗函数法lowpass filter低通滤波器highpass filter高通滤波器bandpass filter带通滤波器bandstop filter带阻滤波器differentiator差分器Gibbs phenomenon吉布斯效应rectangular window矩形窗fixed window function固定窗函数main lobe width主瓣宽度relative sidelobe level相对旁瓣级minimum-phase最小相位Chapter11DFT Algorithm ImplementationDSP算法实现computation计算fast Fourier transform(FFT) algorithms快速傅里叶变换算法complex multiplicati