4. “Frequency Domain” Interface
4.1. Purpose
Last Updated: 21.03.2026This interface is used for analyzing signals in the frequency domain by means of spectrograms (Short-Time Fourier Transform).
4.2. Interface Structure
Last Updated: 21.03.2026The interface is divided into two panels: Each panel contains:
4.4. Spectral Analysis Methods
Last Updated: 21.03.20264.4.1. Fourier (STFT — Short-Time Fourier Transform) Method: Spectrogram using windowed FFT. Parameters: Formula:[S, F, T, P] = spectrogram(signal, hamming(window), nooverlap, window, Fs, 'power', 'yaxis') Display:...
4.5. Channel Correlation
Last Updated: 21.03.2026When the Correlation of the channels option is enabled: Interpretation: Shows the synchrony of frequency components between two channels. Physiological meaning: Correlation between channels shows how...
4.6. Time Series
Last Updated: 21.03.2026The lower graph shows the original signal in the time domain with the same transformations (Trim, CAR, Denoise, IMF) as the spectrogram, but without frequency filtering....