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[[Image:Scaleogram.png|thumb|250px|Scaleograms from the [[discrete wavelet transform|DWT]] and [[continuous wavelet transform|CWT]] for an audio sample]]
A spectrogram is usually depicted as a [[heat map]], i.e., as an image with the intensity shown by varying the [[colour]] or [[brightness]]. However, there are spectrograms in which multiple information are displayed as different colors, i.e., the phase information are represented as hue in addition to magnitude represented as luminescence of the [[HSL and HSV|HSL/HSV]] image, or the different colors for each channels are superimposed into a single spectrogram image.{{cn}}
==Format==
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