Frequency demodulation collapse all in pageSyntax z = fmdemod(y,Fc,Fs,freqdev) z = fmdemod(y,Fc,Fs,freqdev,ini_phase)Description z = fmdemod(y,Fc,Fs,freqdev) returns a demodulated signal z, given the input freq
My Matlab code to implement this is: dt = 1/Fs; % Fs=sample rate ht = hilbert( xr ); % Hilbert transform of real signal Vout phi = atan( imag(ht) ./ xr ); % take arctan freq = ( phi(2:end) - phi(1:end-1) ) / dt; % compute instantaneous freq by derivative of phi ...
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Copy Code Copy Command Play back an audio file after applying FM modulation and demodulation by using System objects to process the data in streaming mode. Load the audio file guitartune.wav by using an audio file reader System object™. Get audiofilereader = dsp.AudioFileReader('guitartune...
Copy Code Copy Command Play back an audio file after applying FM modulation and demodulation by using System objects to process the data in streaming mode. Load the audio file guitartune.wav by using an audio file reader System object™. Get audiofilereader = dsp.AudioFileReader('guitartune...
FM-DemodulationOv**se 上传2.63 KB 文件格式 zip FM解调是指从调频信号中恢复出原始的调制信号的过程。利用RTL-SDR软件无线电通过MatLab实现的FM解调方法,通常涉及使用频谱分析和数字信号处理技术。首先,通过RTL-SDR硬件将调频信号采集到计算机中,然后利用MatLab进行数字信号处理,包括信号滤波、解调和解调后的信号重建。
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MATLAB 的 [Communications Toolbox](Communications Toolbox) 中提供了 FM 调制函数 [fmmod](Frequency modulation - MATLAB fmmod - MathWorks 中国),高斯白噪声函数[awgn](ww2.mathworks.cn/help/c),以及 FM 解调函数 [fmdemod](Frequency demodulation - MATLAB fmdemod - MathWorks 中国),可以很方便地完成 ...
这是一个对复杂样本进行 FM 解调的 Python 函数。 importnumpyasnpdeffm_demod(x, df=1.0, fc=0.0):''' Perform FM demodulation of complex carrier. Args: x (array): FM modulated complex carrier. df (float): Normalized frequency deviation [Hz/V]. ...
Keywords:FM;thresholdeffects;all-digital;quadraturedemodulations CLCnumber:TP929.11Documentcode:AArticleID:1003-0107(2010)11-0003-03 1引言 调频(FM)是常用的调制方式之一,也是超短波通信的主要 工作模式。FM的调频指数越大,抗噪声性能越好,但以带宽换 ...