I want to plot a non-normalized spectrogram in MATLAB. my input signal is y with 16KHz sample rate and 8bit per second. How can I plot its spectrogram in its frequency, not in normalized frequency?
How can I plot a non-normalized spectrogram in MATLAB?
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Assuming you have a license for the MATLAB signal processing toolbox, you can use the function
spectrogram. You find details on this function on the MATLAB help page. The syntax iswhere
fsis the sampling frequency. If you want to plot a spectrogram of a signalxwith default parameters and sampling frequency 16kHz, you can just omit the other parameters: