spectrogram()

Signal Processing

spectrogram() is a MATLAB®-compatible signal processing function for short-time fourier transform spectrogram. computes time-frequency representation of a signal by applying fft to overlapping windowed segments. returns { s, f, t } — power matrix, frequency vector, time vector. Run it online in your browser with SimLab — free, no install, no license required.

▶ Try spectrogram() in SimLab — Free

Syntax

spectrogram(x)

spectrogram(x, window)

spectrogram(x, window, noverlap, nfft)

Examples — run spectrogram() in your browser

x = sin(linspace(0, 100*pi, 1000)); spectrogram(x)

▶ Run

spectrogram(randn(512), 64, 32, 128)

▶ Run

More Signal Processing Functions

Browse other free, MATLAB®-compatible signal processing functions in SimLab:

fft()ifft()filter()filtfilt()butter()

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Frequently Asked Questions about spectrogram()

Is the spectrogram() function free to use in SimLab?

Yes. SimLab is 100% free — no signup, no license, and no usage limits. You can run spectrogram() and 510+ other MATLAB®-compatible functions directly in your browser at simulations4all.com/simlab.

Do I need to install MATLAB to use spectrogram()?

No. SimLab runs entirely in your web browser with zero installation. The spectrogram() function works without any MATLAB® license or software download.

What does spectrogram() do?

Short-time Fourier Transform spectrogram. Computes time-frequency representation of a signal by applying FFT to overlapping windowed segments. Returns { S, f, t } — power matrix, frequency vector, time vector. It is a MATLAB®-compatible signal processing function available in SimLab with the same calling syntax as MATLAB® — typically: spectrogram(x).

Can I run spectrogram() in my browser?

Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls spectrogram(), and run it. Execution happens locally in your browser — no data leaves your machine.

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