Method and device for result-supported reduction of the time-frequency range of a signal

摘要

The method involves determining a spectrogram of an input signal in a certain time-frequency range. The spectrogram of the input signal is selected in an under frequency range and under time range of the time-frequency-range. The output signal is determined from the selected spectrogram. An independent claim is also included for a device for generating a reduced output signal against an input signal in a time range and simultaneously in a frequency range.