Method for converting a music signal into a note-based description and for referencing a music signal in a data bank

process for transferring a Music signal into a note-based description, the following steps: Generating (10) a frequency-time representation of the Music signal, wherein the frequency-time representation coordinate tuple , wherein a coordinate tuple a frequency value and a Value includes, wherein the value of the time of occurrence of the assigned frequency indicating in the music signal; Calculating (12) a r fit function as a function of time, the course of the coordinate tuple the frequency-time representation is intended; Determining (14) at least two adjacent extreme values ​​of the fit function; temporal Segmenting (16) the frequency-time representation on the basis of the determined Extrema, one segment by two adjacent extreme values ​​of the fit function limited where the temporal length assigned the segment on a time length of this segment Score points; andDetermining (20) a pitch of the note for the Segment using coordinate tuples in the segment.