Is it possible to add an option to the SPECTROGRAM function to return/ display the DC frequency in the center of the axis in the Signal Processing Toolbox 6.11 (R2009a)?
% sample rate Fs = 1024; % number of samples of signal to generate N = 4192; % complex sinusoid frequency (negative) Fc = -128; % generate complex sinusoid Ts = 1/Fs; n = 0:N-1; t = n*Ts; x = exp(1i*2*pi*Fc*t); % the frequency reported by plot is not Fc but 1024 + Fc; spectrogram(x,hamming(128),64,128,Fs);
Kshitij Singh answered . 2024-05-17 18:34:05
NFFT = 128; f_vec = [-floor(NFFT/2) : ceil(NFFT/2)-1] * Fs/NFFT; spectrogram(x,hamming(128),64,f_vec,Fs);
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