A spectrogram displays how a local frequency spectrum changes over time, usually using colour for squared Fourier transform magnitude. Longer analysis windows give finer frequency spacing while averaging over a longer time interval.
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A spectrogram is a visual representation of the spectrum of frequencies in a signal as it varies with time. It is commonly used in various fields such as audio processing, speech analysis, music analysis, and signal processing. The spectrogram is generated by taking a time-domain signal and applying a Fourier transform to break it down into its frequency components over time. The result shows how the frequency content of the signal changes over time, typically with: - The horizontal axis representing time.