spektralcentroid
Spektralcentroid, more commonly known as the spectral centroid, is a measure used in digital signal processing and audio analysis to characterize a signal’s frequency content. It represents the center of gravity of the magnitude spectrum of a windowed signal and is often interpreted as the perceived brightness or timbre of the sound.
Calculation is typically performed on a short-time Fourier transform magnitude spectrum. For a windowed frame, let
Interpretation and use are straightforward: higher centroid values indicate more energy at higher frequencies, associated with
Limitations include sensitivity to spectral resolution, window length, and noise, which can shift centroid estimates without