Location:
Search - fir1 matlab
Search list
Description: 通过fir1设计FIR滤波器，fir2设计任意频率响应的滤波器，采用卷积计算信号通过系统后响应（还原），采用fftfilt计算信号通过系统后响应，一个长序列和一个短序列的卷积。-Fir1 through FIR filter design, fir2 design the frequency response of any filter, the use of convolution calculation of the signal through the system to respond to (restore), calculated using fftfilt signal through the system to respond to, a long sequence and a short sequence of convolution.
Platform: |
Size: 7168 |
Author: 白璐 |
Hits:
Description: fir filters design in matla-fir filters design in matlabbbbb
Platform: |
Size: 5120 |
Author: rubber |
Hits:
Description: MATLAB中m函数编写的滤波器代码，此代码为MATLAB自带的，稳定，通用性好。-MATLAB function in the preparation of m filter code, the code for the MATLAB built-in, stable, and universal good.
Platform: |
Size: 3072 |
Author: 新手 |
Hits:
Description: 基于MATLAB的FIR数字滤波器设计
加深对数字滤波器的常用指标和设计过程的理解。
FIR滤波器实现一般采用窗函数法和等纹波设计法。窗函数法还包含两个分支，一种是用公式先手动算出N值和其他对应得窗函数参数值，再代入窗函数和fir1实现，一种是用函数*rord估算出N和相应参数再用fir1实现。不过要注意*rord会低估或高估阶次n，可能会使滤波器达不到指定的性能，这时应稍微增加或降低阶次。如果截止频率在0或Nyquist频率附近，或者设定的dev值较大，则得不到正确结果-MATLAB-based FIR digital filter design of the digital filter to enhance common understanding of targets and the design process. FIR filters achieve the commonly used window function method and design method such as ripple. Window function method also includes two branches, one is to use the formula to manually calculate the first N values and other parameters of the corresponding window function value was then substituted into the window functions and fir1 achieved, one is to use a function* rord estimate the parameters of N and the corresponding re- achieved with fir1. But pay attention to* rord will underestimate or overestimate the order sub-n, may make up less than a specified filter performance, this time to be a slight increase or decrease order times. If the cut-off frequency of 0 or near the Nyquist frequency, or the value of a larger dev set, then the result is not correct
Platform: |
Size: 159744 |
Author: JEFF |
Hits:
Description: C code version of Matlab function fir1.m (lowpass only)
Platform: |
Size: 1024 |
Author: Phan |
Hits:
Description: （1）认真复习第七章中用窗函数法和等波纹最佳逼近法设计FIR数字滤波器的原理；
（2）调用信号产生函数xtg产生具有加性噪声的信号xt，并自动显示xt及其频谱，如图10.5.1所示；
图10.5.1 具有加性噪声的信号x(t)及其频谱如图
（3）请设计低通滤波器，从高频噪声中提取xt中的单频调幅信号，要求信号幅频失真小于0.1dB，将噪声频谱衰减60dB。先观察xt的频谱，确定滤波器指标参数。
（4）根据滤波器指标选择合适的窗函数，计算窗函数的长度N，调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序，调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。
（4）重复（3），滤波器指标不变，但改用等波纹最佳逼近法，调用MATLAB函数remezord和remez设计FIR数字滤波器。并比较两种设计方法设计的滤波器阶数。-failed to translate
Platform: |
Size: 58368 |
Author: 李海龙 |
Hits:
Description: Fir Filtering by making use of the FIR1 filter function in Matlab. Low-pass filter, high pass filter, bandpass filters
Platform: |
Size: 1024 |
Author: bino |
Hits:
Description: 根据滤波器指标选择合适的窗函数，计算窗函数的长度N，调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序，调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。
Platform: |
Size: 25600 |
Author: yangnana |
Hits:
Description: 用MATLAB函数fir1设计一个具有如下指标的线性相位FIR带通滤波器：阻带截止频率为0.55pi 和0.85pi，通带截止频率为0.65pi和 0.75pi，最大通带衰减为0.2dB，最小阻带衰减为42dB。分别利用下面的窗函数来设计滤波器：汉宁窗、汉明窗、布莱克曼窗。对于每种情况，给出其冲激响应系数并画出设计的滤波器的幅频响应。-Designed with a MATLAB function with the following indicators fir1 linear phase FIR band-pass filter: stopband cutoff frequency for the 0.55pi and 0.85pi, passband cutoff frequency of 0.65pi and 0.75pi, maximum passband attenuation is 0.2dB, minimum stopband attenuation of 42dB. Window functions were used to design the following filter: Hanning, Hamming window, Blackman window. For each case, given its impulse response filter coefficients and draw the design magnitude response.
Platform: |
Size: 5120 |
Author: 董晓曦 |
Hits:
Description: MATLAB下滤波器的简单示例。fir1，fir2的使用。-A simple example of MATLAB filter. Fir1, fir2 use.
Platform: |
Size: 3072 |
Author: lyz |
Hits:
Description: MATLAB中m函数编写的滤波器代码，此代码为MATLAB自带的，稳定，通用性好。-MATLAB function in the preparation of m filter code, the code for the MATLAB built-in, stable, and universal good.
Platform: |
Size: 3072 |
Author: orsisun |
Hits:
Description: 1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。
需要用到的函数：
fir1 用窗函数设计FIR滤波器的函数
2. 用GUI设计一界面（如图1所示）完成如下功能：
1） 输入一语音信号，画出语音信号的时域图和频谱图；
2） 对语音信号加噪处理，画出加噪后的时域图和频谱图；
3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。
-1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each
Platform: |
Size: 1024 |
Author: longteng |
Hits:
Description: 本教程使用的DSP库来自ARM官方，此库支持以CM0，CM3，CM4以及CM7为内核的所有MCU。 本章节讲解FIR滤波器的Matlab设计。主要是函数fir1和fir2的使用。-This tutorial uses a DSP library the ARM official, this library supports CM0, CM3, CM4 and CM7 for the kernel of all MCU.
Platform: |
Size: 611328 |
Author: 安富莱电子 |
Hits:
Description: fir滤波器的matlab例程,各种滤波器的特征频率,采用fir1函数设计FIR滤波器-matlab fir
Platform: |
Size: 1024 |
Author: 廖道 |
Hits:
Description: 生成各种窗函数,采用fir1函数设计FIR滤波器,求滤波器的幅频响应-matlab windows
Platform: |
Size: 1024 |
Author: 廖道 |
Hits:
Description: 产生一个高斯白噪声
利用MATLAB自带的fir1函数产生一个低通滤波器，限制高斯白噪声的带宽，由此产生了视频噪声。
利用产生的视频噪声，分别代入噪声调幅干扰的时域表达式，并且进行100次的积累后求平均值，对其进行快速傅里叶变换后，由此画出噪声调幅干扰的频域波形。
重复上述步骤，分别代入噪声调频干扰与噪声调相干扰的时域表达式，分别画出其频域波形与时域波形。(Generate a Gauss white noise
The fir1 function of MATLAB is used to generate a low-pass filter, which limits the bandwidth of Gauss white noise, and thus produces video noise.
Using the generated video noise, the time domain expressions of noise amplitude modulation interference are substituted, and the average value is calculated after 100 times accumulation. After fast Fourier transform, the frequency domain waveform of noise amplitude modulation interference is drawn.
Repeat the steps mentioned above, and substitute the time-domain expressions of noise FM interference and noise coherent interference, and draw the frequency-domain waveform and time-domain waveform respectively.)
Platform: |
Size: 3072 |
Author: 大丶哥 |
Hits:
Description: FIR低通数字滤波器的设计，利用matlab编程语言利用FIR1函数设计低通滤波器。(Design of FIR Low Pass Digital Filter)
Platform: |
Size: 2432000 |
Author: 呵呵123456789lk |
Hits:
Description: 对标Matlab中fir1函数的C语言实现(C language implementation of fir1 function in benchmarking matlab)
Platform: |
Size: 2048 |
Author: Jeff Wong |
Hits: