信号处理导论专业名词术语.doc

专业名词术语总结specialized words chapter 16sample采样quantization量化reconstruction重建ideal reconstruction理想重建analog signal模拟信号digital signal数字信号A/D conversion模数转换D/A conversion数模转换digital signal processor数字信号处理器frequency spectrum频谱sinusoid 正弦filter滤波器pole极点zero零点exponentially decaying指数衰减impulse response冲激响应convolution卷积frequency response频率响应steady state稳态attenuate衰减magnified放大 amplitude振幅aliasing混叠antaliasing profilers 抗混叠预滤波器symmetric相对的distort误传intersect相交rotate旋转clockwise顺时针duration持续时间periodically replication周期重复nodulation调制normalize归一化lowpass band低通带pass band通带DTFT序列傅氏变换Capacitor电容Resolution分解Bipolar双极性unipolar单极性rounding舍入truncation截断quantization error量化误差mean均值variance变量 mean square values均方值root mean square均方根signal to noise ratio(SNR)信噪比square wave方波unipolar natural binary code单极性自然二进制码bipolar offset binary code双极性偏移二进制码bipolar twos complement code双极性二的补码successive approximation AD convertor 逐次比较型模数转换器full scale range满量程uniform quantization均匀量化quantization level量化等级quantization width/resolution量化宽度/间隔random variable随机变量uniform distribution均匀分布probability density概率密度stationary zero-mean white noise sequence零均值平稳白噪声序列autocorrelation 自相关cross-correlation互相关dynamic range动态范围comparator 比较器register寄存器feedback loop反馈环路linear time-invariant system线形时不变系统discrete-time system离散时间系统finite impulse response有限长单位脉冲响应infinite impulse response无限长单位脉冲响应block processing 块处理sample by sample processing逐个样本处理internal state内部状态linearity线性stability 稳定性weighted average加权平均difference equation差分卷积recursive递归even偶数odd 奇数filter coefficient滤波器系数diverge发散antidiagonal反对角线flip-and-slide翻转平移 input-off-state输出暂态integrator积分器DCgain直流增益overlap-add-block convolution method重叠相加器temporary临时的adder加法器multiplier相乘器delay延迟器tapped delay line 抽头延迟器differentiator 微分器unit step 单位阶跃信号alternating step 正负交替的阶跃信号Z-transform Z变换positive正的negative负的region of convergence 收敛域marginally stable临界稳定polynomial多项式denominator 分母numerator分子peak 峰dip 谷partial fraction expansion method 部分分式展开法unit circle 单位圆double sided complex sinusoid 双边复正弦truncated complex sinusoid 单边复正弦real valued coefficient实系数complex conjugate pares 复共轭对transfer function传递函数direct form直接型parallel form并联型canonical form正准型transposed form转置型effective time constant有效时间常数resonator谐振器notch filter陷波滤波器comb filter 梳状滤波器parametric equalizer 参量均衡器channel equalization信道均衡deconvolution解卷积Chapter7 Digital Filter Realizationsdirect form 直接型 difference equation 差分方程IIR filter 无限长单位脉冲响应滤波器 FIR filter有限长单位脉冲响应滤波器adder 加法器 multiplier 乘法器feeding forward 前馈 feeding back 反馈numerator 分子 denominator 分母polynomial 多项式 coefficient 系数recursive term 递归项 non-recursive term 非递归项negative 负的 order 滤波器的阶internal state 内部状态 state updating 状态更新transfer function 传递函数 initialize 初始化cascade form 级联型 register 寄存器canonical form (direct formII) 正准型（直接二型）second-order-section (SOS) 二阶基本节complex conjugate pairs 复共轭对quantization effects in digital filters 数字滤波器中的量化效应roundoff error 舍入误差sample-by-sample processing algorithm 逐个样本处理算法Chapter 8 Signal Processing Applicationdigital waveform generator 数字波形产生器periodic square wave 周期方波sinusoidal generator 正弦波产生器computational overhead 额外的计算开销exponentially decaying sinusoid 包络按指数衰减的正弦波wavetable synthesis 波表合成periodic sequence 周期序列 periodic waveform generator 周期波形产生器touchtone 全数字按键式 DTMF 双音多频echo 回声 combfilter 梳状滤波器reverberator 混响器 noise reduction 降噪additive noise 加性噪声 compromise 折衷NRR (noise reduction ratio) 降噪抑制比SNR (signal-to-noise ratio) 信噪比zero-mean white Gaussian noise 零均值高斯白噪声minimizing 最小化 maximizing 最大化piece-wise linear 分段线性 ECG 心电图Q-factor 品质因子Chapter 9 DFT/FFT Algorithmstime-windowing 时域加窗 finite-duration 有限长sampling rate 采样率 sampling time interval 采样间隔rectangular window 矩形窗 hamming window 汉明窗window function 窗函数 frequency leakage 频率泄露mainlobe 主瓣 sidelobe 旁瓣mainlobe width 主瓣宽度 relative sidelobe level 相对旁瓣水平physical frequency resolution 物理频率分辨率computational frequency resolution 计算频率分辨率resolvability condition 可分辨条件sharp spectral line 尖锐的谱线DTFT (discrete time Fourier transform) 离散时间（序列）傅立叶变换DFT (discrete Fourier transform) 离散傅立叶变换N-point DFT of a length L signal 对L长信号做N点DFTzero padding 补零 biasing error 偏移误差rounding error 舍入误差 matrix form 矩阵形式twiddle factor 旋转因子 modulo-N 模Nperiodic extention 周期延拓 computational cost 计算代价unitary matrix 酉阵 merging 组合 FFT (fast Fourier transform ) 快速傅立叶变换Decimation-in-time radix-2 FFT algorithm 按时间抽取的基二FFT算法butterfly merging equations 蝶形组合公式shuffling 重排 bit reversal 码位倒置fast convolution 快速卷积 circular convolution 圆周卷积overlap-add methord 重叠相加法overlap-save methord 重叠保留法IDFT (inverse discrete Fourier transform ) 序列傅氏反变换 IFFT (inverse fast Fourier transform) 快速傅立叶反变换Chapter 10 FIR Digital Filter Designwindow method 窗口法 linear phase 线性相位guarantee sability 保证稳定性 lowpass 低通highpass 高通 bandpass 带通bandstop 带阻 transition band 过渡带passband 通带 stopband 阻带differentiator 微分器 Hilbert transformer 希尔伯特变换器double-sided 双边 real 实部imaginary 虚部 even 偶odd 奇 truncate 截断cutoff frequency 截止频率 transition band width 过渡带宽ripples 纹波 symmetric 对称antisymmetric 反对称Chapter 11 IIR Digital Fi