資源簡介
是FM調頻立體聲的調制解調的matlab仿真代碼,實現了對雙聲道語音的調制和解調,非simulink方式,完完全全的matlab代碼
This is for FM stereo radio signal modulation and de-modulation code. it is not for matlab simulink, it is completely matlab code, you can follow it and for understanding FM stereo signal generate very well.
代碼片段和文件信息
%?clc;
%?clear;
%?close?all;
function?Demodulation(s_toutput_file)
%%%%%%%%%%%%%%%%%%%%%%%%%??sample?rate??%%%%%%%%%%%%%%%%%%%%%%%%%
ExtensionFactor=3;??????????????????????????%?raise?sample?rate?3?times
FS=44100;???????????????????????????????????%?sample?rate?of?wave?file
fs=FS*ExtensionFactor;??????????????????????%?sampling?rate
ts=1/fs;
%%%%%%%%%%%%%%%%%%??receive?the?signal:?s_t??%%%%%%%%%%%%%%%%%%%%
%?load?s_t_matlab;????????????????????????????%?s_t:?input?from?data-file
[tmpN]=size(s_t);??????????????????????????%?points?of?samples
MusicLen=N/ExtensionFactor;?????????????????
t=-N/2*ts:ts:(N/2-1)*ts;
%%%%%%%%%%%%%%%%%%??Obtain?s1_t?and?s2_t?from?s_t?%%%%%%%%%%%%%%%
%通過頻譜圖確定濾波器的大致帶寬值B
Nfft=2^ceil(log2(N)+2);
df=fs/Nfft;fk=(-Nfft/2:Nfft/2-1)*df;
s_f=ts*fft
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????2301??2017-03-02?15:35??FM?stereo?signal?modulation?and?demodulation?matlab?code\Demodulation.m
?????文件?????138283??2017-03-02?16:02??FM?stereo?signal?modulation?and?demodulation?matlab?code\FM調制解調立體聲.docx
?????文件????????728??2017-03-02?15:33??FM?stereo?signal?modulation?and?demodulation?matlab?code\Modulation.m
?????文件????1769516??2017-03-01?16:59??FM?stereo?signal?modulation?and?demodulation?matlab?code\speech.wav
?????文件????????220??2017-03-02?15:34??FM?stereo?signal?modulation?and?demodulation?matlab?code\TotalRun.m
?????目錄??????????0??2017-03-02?16:02??FM?stereo?signal?modulation?and?demodulation?matlab?code
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??????????????1911048????????????????????6
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