sine wave spectrum analysis function
% [fsig,amp,vos,snr,thd,sndr,enob,phi]=fft_hann(data, bw_low, bw_high, fs, fig, tit, opt);
% [fsig,amp,vos,snr,thd,sndr,enob,phi]=fft_hann(data, 20, 20e3, 65536, '', 'No title', opt);
% opt=fft_hann(); % return default option.
% fsig: signal frequency
% amp: sig amplitude
% vos: offset voltage
% thd: total harmonic distortion
% sndr: signal to noise and distortion ratio
% enob: efficient number of bits
% phi: signal phase
% data: data to be fft
% bw_low: lowband of inband frequency
% bw_high: highband of inband frequency
% fs : sampling rate
% fig = combination if 'i','f','w','I','F','W', stands for inband fig,
% fullband fig, wave fig, Upper case will generate tit.png file
% tit: title of figure.
% opt: additional options:
% opt.nhd: number of harmonic distortion force to caculate
% opt.nspur: number of spur to caculate
% opt.RL: RL to caculate power;
% opt.win = 'barthannwin','bartlett','blackman','blackmanharris','bohmanwin',
% 'chebwin', 'flattopwin', 'gausswin', 'hamming', 'hann', 'kaiser',
% 'nuttallwin', 'parzenwin', 'rectwin', 'taylorwin', 'triang', 'tukeywin',
% opt.coherent: coherent sampling, minimize skirt
% opt.sig_leakage: when coherent sampling, still caculate as much as possible skirt
% opt.sig_add_span: when coherent sampling, add additional skirt to besides
% of window skirt, no effect when opt.sig_leakage = 1;
% Example:
% x = sin((1:65536)*2*pi*111/2048);
% x = x + 0.001*x.^2 + 0.002*x.^3 + 0.0001*sin([1:65536]*2*pi*31/2048);
% x = x + randn(size(x))*1e-5 + 0.01;
% fft_hann(x,200,20e3,65536,'fiw','title');
% opt=fft_hann();
% opt.coherent=1;
% fft_hann(x,0,20e3,65536,'i','title',opt);
% opt.win = 'rectwin';
% fft_hann(x,0,20e3,65536,'i','title',opt);
% opt.sig_leakage = 1;
% fft_hann(x,0,20e3,65536,'i','title',opt);
% opt.win = 'blackmanharris';
% fft_hann(x,0,20e3,65536,'i','title',opt);
Cite As
liu yongping (2024). sine wave spectrum analysis function (https://www.mathworks.com/matlabcentral/fileexchange/41236-sine-wave-spectrum-analysis-function), MATLAB Central File Exchange. Retrieved .
MATLAB Release Compatibility
Platform Compatibility
Windows macOS LinuxCategories
Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!Discover Live Editor
Create scripts with code, output, and formatted text in a single executable document.
Version | Published | Release Notes | |
---|---|---|---|
1.0.0.0 |