STFT Spectrogram (Not in Base Package)

Computes the signal energy distribution in the joint time-frequency domain, using the short-time Fourier transform (STFT) algorithm. The STFT Spectrogram VI performs a sliding FFT.

X is the time waveform.
time increment is the number of samples to shift the sliding window. The default is 1. Increasing time increment decreases the computation time and reduces memory requirements, but also reduces time-domain resolution. Decreasing time increment improves time-domain resolution, but increases the computation time and memory requirements.
window length is the actual length of the selected window. The default is 1. It corresponds to the number of samples used in calculating the Fourier transform.
window selector determines the type of analysis window the VI uses to compute STFT Spectrogram {X}.

0Rectangular (default)
1Blackman
2Hamming
3Hanning
4Gaussian
STFT Spectrogram {X} is a 2D array that describes the time waveform energy distribution in the joint time-frequency domain. The number of rows (time axis) in STFT Spectrogram {X} is equal to the number of elements in the time waveform divided by time increment, and then rounded up. The number of columns (frequency axis) in STFT Spectrogram {X} is equal to

error returns any error or warning from the VI. Refer to Signal Processing Error Codes for more information about these conditions.