Cano Cerón, EstefaníaEstefaníaCano CerónLukashevich, HannaHannaLukashevichKramer, PatrickPatrickKramer2022-03-082022-03-082019https://publica.fraunhofer.de/handle/publica/311999Embodiments provide an apparatus for providing a fingerprint of an input signal, wherein the apparatus is configured to determine intensity values for a plurality of time-frequency regions of the input signal, wherein the apparatus is configured to compare the intensity values associated with different time-frequency regions of the plurality of time-frequency regions, to obtain individual values of the fingerprint based on the comparison of intensity values associated with two time-frequency regions.en621006patent3547314