FIELD: physics.
SUBSTANCE: disclosed device relates to a device for analysing a spectrogram of an audio signal level. Device has a module for determining frequency variation, which is configured to determine a frequency change for each frequency-time bin from a plurality of frequency-time bins of a spectrogram of the audio signal level depending on a spectrogram of the audio signal level. Besides, the device comprises a classifier configured to assign each frequency-time bin from a plurality of frequency-time beans to a group of signal components from two or more groups of signal components depending on a frequency change determined for said frequency-time bin.
EFFECT: device provides improved principles of audio signal processing.
17 cl, 6 dwg
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