Short-time Fourier transform

The Short-Time Fourier Transform (STFT) is a mathematical technique used to analyze the frequency content of signals whose frequency characteristics change over time. It is particularly useful for non-stationary signals—signals whose frequency content varies over time, such as speech, music, or other audio signals. ### Key Components of STFT: 1. **Time Windowing**: The signal is divided into short overlapping segments (frames).