Editing Short-time Fourier transform (section)

== Application ==
[[File:Short time fourier transform.PNG|thumb|upright=1.2|right|An STFT being used to analyze an audio signal across time]]
STFTs as well as standard Fourier transforms and other tools are frequently used to analyze music. The [[spectrogram]] can, for example, show frequency on the horizontal axis, with the lowest frequencies at left, and the highest at the right. The height of each bar (augmented by color) represents the [[amplitude]] of the frequencies within that band. The depth dimension represents time, where each new bar was a separate distinct transform. Audio engineers use this kind of visual to gain information about an audio sample, for example, to locate the frequencies of specific noises (especially when used with greater frequency resolution) or to find frequencies which may be more or less resonant in the space where the signal was recorded. This information can be used for [[Equalization (audio)|equalization]] or tuning other audio effects.