4.75

4.8 | 4 ratings Rate this file 26 Downloads (last 30 days) File Size: 5.45 KB File ID: #41236
image thumbnail

sine wave spectrum analysis function

by

 

get signal frequency, amplitude, offset voltage, SNR, THD, SND, ENOB of simulation or test output

| Watch this File

File Information
Description

% [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);

MATLAB release MATLAB 7.12 (R2011a)
Tags for This File   Please login to tag files.
Please login to add a comment or rating.
Comments and Ratings (4)
02 Nov 2014 Housam  
11 Sep 2013 Jules Antoine  
14 Aug 2013 Edwin

The software works fine and delivers the same results as our internal ENOB software. A little bit more documentation would be usefull

08 Jul 2013 Ashwini  

Contact us