数字信号处理(DSP)专业词汇.docx

系统：system 信号：signal 模拟信号：analog signal 数字信号：digital signal模/数转换：analog-to-digital conversion 频谱：spectrum数字滤波：digital filtering 滤波器：filter采样：sample 保持：hold数字代码：digital code 量化电平：quantization level 时域：time domain 频域：frequency domain低频：low frequency 高频：high frequency低通滤波器：low pass filter 高通滤波器：high pass filter带通滤波器：band pass filter 带阻滤波器：band stop filter零阶保持信号:zero order hold signal 平滑：smooth采样周期：sampling period 频率分量:frequency elements图像处理：image processing 传感器：sensor电压：voltage 电流：currentanti-aliasing filter 抗混叠滤波器anti-imaging filter 抗镜像滤波器sampling interval 采样间隔=sampling period 采样周期sampling frequency 采样频率=sampling rate 采样速率sampling theorem 采样定理Nyquist sampling rate 奈奎斯特采样率Nyquist frequency 奈奎斯特频率Nyquist range 奈奎斯特范围oversampling 过采样undersampling 欠采样quantization step 量化步长quantization noise量化噪声bit rate 比特率数字函数：digital function 合成函数：composite function二维数字信号：two-dimensional digital signal语音信号：speech signal 量化方案：quantization scheme脉冲函数：impulse function 单位脉冲函数：unit impulse function 阶跃函数：step function 幂函数:power function指数函数: exponential function 正弦函数：sine function余弦函数：cosine function 复平面：complex plain欧拉恒等式：Euler’s identity 模拟频率：analog frequency数字频率:digital frequency 采样间隔：sampling interval相移：phase shift 像素：pixel灰度级：gray scaleroll-off 滚降gain 增益pass band 通带stop band 阻带bandwidth 带宽linear system 线性系统superposition 叠加原理time-invariant 时不变causal system因果系统difference equation差分方程filter coefficient滤波器系数recursive filter 递归滤波器nonrecursive filter 非递归滤波器 finite word length effect有限字长效应impulse response 脉冲响应infinite impulse response （IIR)无限脉冲响应finite impulse response (FIR)有限脉冲响应moving average filter 滑动平均滤波器step response 阶跃响应z transform z变换 region of convergence 收敛域inverse z transform