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本文是用矩形窗法设计FIR带通滤波器,来滤除音乐信号的噪声-this is rectangular window design FIR bandpass filter to filter out the noise signal Music
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1.找点一段心电信号,画出信号时域波形和频谱图;
2. 利用MATLAB中的随机函数产生噪声加入到心电信号中,使心电信号被污染,读出污染后的号并画出对应信号的时域波形和频谱图;
3.用双线性变换法设计一个Butterworth带通滤波器,输出所设计的滤波器的阶次,分子、分母多项式的系数,画出滤波器的频率响应(幅频响应和相频响应)曲线;(也可以根据自己需要设置滤波器性能指标)
带通通滤波器设计性能指标:fs1=10Hz, fp1=20Hz, fp1=1000Hz, fs2=120
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% y=filter(sig,fmin,fmax)
% 对信号进行理想滤波,可完成低通,带通
% sig为被滤波信号
% fmin为下限频率,当fmin为0时为低通滤波器,当fmin>0时,为带通滤波器
% fmax为上限频率,fmax>fmin
% fs为信号的采样频率
% y为经过滤波后的信号
-% Y = filter (sig, fmin, fmax)% of the ideal signal filtering, to be com
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实时滤波器,具有精美界面,可以开发自己的应用功能。-You can use 4 types of filters:
- Butterworth
- Chebyshev 1
- Chebyshev 2
- Elliptic
You can use them as:
- Lowpass
- Highpass
- Bandpass
- Stopband
Showing theirs features in frequency, phase and
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Multirate滤波器设计。模拟带通信号频率范围1KHz—1.1KHz,设计一个采样频率8KHz数字频谱分析系统,要求频率分辨率0.1Hz。-Multirate filter design. Analog bandpass signal frequency range 1KHz-1.1KHz, design a sampling frequency of 8KHz digital spectrum analysis system, required frequency resolution o
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使用每秒10个采样的频率 ,对信号 进行采样,画出原始信号的傅立叶变换X(f) 和理想采样信号的傅立叶变换 。假定重构滤波器是带宽为 的理想低通滤波器,具有带通增益 ,画出重构滤波器的输出-Using 10 samples per second frequency, the signal is sampled, to draw the original signal Fourier transform X (f) and the ideal sampling signal Fourier tra
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产生随机信号 并通过带通滤波器 并计算统计特性Any changes made cards can be good results-Random signal generated by band-pass filter and calculate the statistical properties
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利用matlab语言,设计带通滤波器,对声信号进行滤波处理,除去环境噪声。-Using matlab language, designed bandpass filter, the acoustic signal filtering to remove noise.
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本文介绍了基于MATLAB软件在《信号与系统》课程教学中的仿真实验,通过抽样信号的表征、周期方波信号的傅立叶级数分解与合成、余弦信号的相加与相乘、RLC带通滤波器的频率特性等仿真实验,说明了将MATLAB应用于教学实践中的重要作用和意义。-This article describes the MATLAB-based software in the " Signals and Systems" course teaching simulation, by sampling th
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fir带通滤波器,可将不需要的频率成分的信号滤去-fir bandpass filter unwanted frequency components can be filtered signal
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Bandpass and Nulling Filter Design project on matlab
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带通滤波器,可以提取一定频宽范围内的信号-Bandpass filter can extract the signal within a certain bandwidth
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基于stm32的数字化语音存储与回放系统的软件设计。该系统经过拾音器采集语音信号,经带通滤波与AGC后,进入AD,然后数据存入SRAM,再由DA送至带通滤波,由喇叭将语音信号恢复。该系统可以很好的存储与回放语音信号。,
本源码是在mdk上开发的。 软件设计分两个模块:压缩解压编码与存储模块。压缩编码有PCM编码和ADPCM编码两种可用按键选择;存储是FSMC存储(256k flash)存储。-Stm32 of digital voice storage and playback system
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用Matlab产生一个频率为1Hz、功率为1的余弦信源,设载波频率为10Hz,并画出:
1.DSB调制信号及其功率谱密度;
2.将已调信号解调,在时域内将解调后的波形与原信号进行对比;
3.A=2的AM调制信号及其功率谱密度;
4.SSB调制信号及其功率谱密度;
5.在信道中各自加入经过带通滤波器后的窄带高斯白噪声,功率为0.1,解调各个信号,并画出解调后的波形。
-Matlab produce a frequency for 1 hz, power for 1 co
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AM信号加入高斯白噪声,然后通过带通滤波器,达到除噪声的功能,并且显示图像-AM signal by adding white Gaussian noise, then passed through a bandpass filter, to achieve in addition to the function of the noise, and the display image
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This program Is an IR bandpass filter which filters the signal that is needed for processing.
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本文件为一个word文档。本文档基于MATLAB平台设计了带通滤波器,滤除信号中特定频率成分,具体功能word中有详细说明。本文件旨在通过一个简单的实例,说明基于MATLAB的数字滤波器设计原理,并在最后总结了数字滤波器的设计规律,文件内容对初学者有很大的帮助。-This document is a word document. This document is based on MATLAB platform design bandpass filter, filter out specifi
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C语言实现带通滤波器,可以直接运行。在信号处理过程中非常有用-C language implementation bandpass filter, which can be run directly.In the process of signal processing is very useful
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倍频程带通滤波器,实现倍频程分析和计算信号的有效值-Octave bandpass filter to achieve octave analysis and calculate the effective value of the signal
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Bandpass Filters
A band pass filter is an electronic circuit that allows the passage of a
Frequency range of a signal and attenuates the remaining frequencies.
We present three bandpass filters that added deliver the audible spectrum
By the human
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