aikataajuusanalyyseissä
Aikataajuusanalyysi, known in English as time-frequency analysis, is a technique used to analyze signals that change over time. Unlike traditional Fourier analysis which provides a global frequency representation of a signal, time-frequency analysis offers a more detailed view of how the frequency content of a signal evolves across time. This is particularly useful for non-stationary signals, where the frequency components are not constant.
Several methods exist for performing time-frequency analysis, each with its own strengths and weaknesses. The Short-Time
Time-frequency analysis finds applications in a wide range of fields. In audio processing, it is used for