Patent Document ID: 20040060424
Application ID: 10473462
Patent Status: 0

Claim One:
1. Method for transferring a music signal into a note-based description, comprising the following steps: generating a frequency-time representation of the music signal, with the frequency-time representation comprising coordinate tuples, with one coordinate tuple including a frequency value and a time value, with the time value indicating the time of occurrence of the assigned frequency in the music signal; calculating of a fit function as a function of time, the course of which is determined by the coordinate tuples of the frequency-time representation; determining of at least two adjacent extreme values of the fit function; time-segmenting of the frequency-time representation on the basis of the determined extreme values, with a segment being limited by two adjacent extreme values of the fit function, with the time length of the segment indicating a time length of a note assigned to this segment; and determining a tone height of the note for the segment using coordinate tuples in the segment.